| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * This file is part of slick/form package | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * For the full copyright and license information, please view the LICENSE | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  * file that was distributed with this source code. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  | namespace Slick\Form\Input; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | use Slick\Form\ElementInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  | use Slick\Form\Exception\InvalidArgumentException; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  | use Slick\Form\InputInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  | use Slick\Validator\NotEmpty; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  | use Slick\Validator\StaticValidator; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  | use Slick\Validator\ValidationChain; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | use Slick\Validator\ValidationChainInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  | use Slick\Validator\ValidatorInterface; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | use Slick\Validator\Exception as ValidatorException; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  * Implementation for ValidationAwareInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |  * @package Slick\Form\Input | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |  * @author  Filipe Silva <[email protected]> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  | trait ValidationAwareMethods | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |      * @var ValidationChainInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |     protected $validationChain; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |      * @var boolean | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |     protected $valid = true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |      * @var array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |     protected $invalidInstances = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |      * @var array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |     protected $context = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |      * Gets the value to be validated | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |      * @return mixed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |     abstract public function getValue(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |      * Check if the value is valid | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |      * The value should pass through all validators in the validation chain | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |      * @return boolean True if is valid, false otherwise | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 | 16 |  |     public function isValid() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 | 16 |  |         $valid = $this->valid; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 | 16 |  |         if ($this->isMultiple()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  |             $valid = $this->isMultipleValid(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 | 16 |  |         return $valid; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |      * Validates when input is set to be multiple | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |      *  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |      * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |     protected function isMultipleValid() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |         if (!$this->isRendering()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  |             return empty($this->invalidInstances); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |          | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |         return ! in_array($this->getInstance(), $this->invalidInstances); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |      * Validates current value so that isValid can retrieve the result of | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  |      * the validation(s) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  |      * @return self|$this|ValidationAwareInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 | 6 |  |     public function validate() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 | 6 |  |         $context = array_merge(['input' => $this], $this->context); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 | 6 |  |         $values = $this->getValue(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 | 6 |  |         if (!is_array($values)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 | 6 |  |             $this->valid = $this->getValidationChain() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 | 6 |  |                 ->validates($this->getValue(), $context); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 | 6 |  |             return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  |         $this->validateArray($values, $context); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 | 2 |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  |      * Validates input when is set to be multiple | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  |      *  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  |      * @param array $values | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  |      * @param array $context | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  |     protected function validateArray(array $values, $context) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  |         foreach ($values as $key => $value) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  |             $valid = $this->getValidationChain() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  |                 ->validates($value, $context); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  |             if (!$valid) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  |                 $this->setInvalid($key); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  |      * Mark instance as invalid | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  |      *  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  |      * @param int $key | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  |      *  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  |      * @return $this|self | 
                            
                    |  |  |  | 
                                                                                        
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                | 129 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  |     protected function setInvalid($key) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  |         array_push($this->invalidInstances, $key); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  |      | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  |      * Returns the validation chain for this input | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  |      * @return ValidationChainInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 | 38 |  |     public function getValidationChain() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 | 38 |  |         if (null == $this->validationChain) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 | 38 |  |             $this->setValidationChain(new ValidationChain()); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 | 38 |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 | 38 |  |         return $this->validationChain; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  |      * Sets input validation chain | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  |      * @param ValidationChainInterface $chain | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  |      * @return self|$this|ValidationAwareInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 | 40 |  |     public function setValidationChain(ValidationChainInterface $chain) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 | 40 |  |         $this->validationChain = $chain; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 | 40 |  |         return $this; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  |      * Adds a validator to the validation chain | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  |      * The validator param could be a known validator alias, a FQ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  |      * ValidatorInterface class name or an object implementing | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  |      * ValidatorInterface. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  |      * @param string|ValidatorInterface $validator | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  |      * @param string|array $message Error message and possible contexts | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  |      *      variables. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  |      * @return self|$this|ValidationAwareInterface|ElementInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  |      * @throws InvalidArgumentException If the provided validator is an unknown | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  |      *      validator alias or not a valid class name or the object passed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  |      *      does not implement the ValidatorInterface interface. | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 178 |  |  |      */ | 
            
                                                                        
                            
            
                                    
            
            
                | 179 | 36 |  |     public function addValidator($validator, $message = null) | 
            
                                                                        
                            
            
                                    
            
            
                | 180 |  |  |     { | 
            
                                                                        
                            
            
                                    
            
            
                | 181 |  |  |         try { | 
            
                                                                        
                            
            
                                    
            
            
                | 182 | 36 |  |             $msg = $message; | 
            
                                                                        
                            
            
                                    
            
            
                | 183 | 36 |  |             if (is_array($message)) { | 
            
                                                                        
                            
            
                                    
            
            
                | 184 | 30 |  |                 $msg = array_shift($message); | 
            
                                                                        
                            
            
                                    
            
            
                | 185 | 30 |  |                 $this->context = $message; | 
            
                                                                        
                            
            
                                    
            
            
                | 186 | 30 |  |             } | 
            
                                                                        
                            
            
                                    
            
            
                | 187 | 36 |  |             $validator = StaticValidator::create($validator, $msg); | 
                            
                    |  |  |  | 
                                                                                        
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                | 188 | 34 |  |             $this->getValidationChain() | 
            
                                                                        
                            
            
                                    
            
            
                | 189 | 34 |  |                 ->add($validator); | 
            
                                                                        
                            
            
                                    
            
            
                | 190 | 34 |  |             if ($validator instanceof NotEmpty) { | 
            
                                                                        
                            
            
                                    
            
            
                | 191 | 34 |  |                 $this->setRequired(true); | 
            
                                                                        
                            
            
                                    
            
            
                | 192 | 34 |  |             } | 
            
                                                                        
                            
            
                                    
            
            
                | 193 | 36 |  |         } catch (ValidatorException $caught) { | 
            
                                                                        
                            
            
                                    
            
            
                | 194 | 2 |  |             throw new InvalidArgumentException( | 
            
                                                                        
                            
            
                                    
            
            
                | 195 | 2 |  |                 $caught->getMessage(), | 
            
                                                                        
                            
            
                                    
            
            
                | 196 | 2 |  |                 0, | 
            
                                                                        
                            
            
                                    
            
            
                | 197 |  |  |                 $caught | 
            
                                                                        
                            
            
                                    
            
            
                | 198 | 2 |  |             ); | 
            
                                                                        
                            
            
                                    
            
            
                | 199 |  |  |         } | 
            
                                                                        
                            
            
                                    
            
            
                | 200 | 34 |  |         return $this; | 
            
                                                                        
                            
            
                                    
            
            
                | 201 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 |  |  |      * Sets the required flag for this input | 
            
                                                                                                            
                            
            
                                    
            
            
                | 205 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 206 |  |  |      * @param boolean $required | 
            
                                                                                                            
                            
            
                                    
            
            
                | 207 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 208 |  |  |      * @return $this|self|InputInterface | 
            
                                                                                                            
                            
            
                                    
            
            
                | 209 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 210 |  |  |     abstract public function setRequired($required); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 211 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 212 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 213 |  |  |      * If input is multiple get the instance it belongs | 
            
                                                                                                            
                            
            
                                    
            
            
                | 214 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 215 |  |  |      * @return int | 
            
                                                                                                            
                            
            
                                    
            
            
                | 216 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 217 |  |  |     abstract public function getInstance(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 218 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 219 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 220 |  |  |      * Check if this input is for multiple usage | 
            
                                                                                                            
                            
            
                                    
            
            
                | 221 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 222 |  |  |      * @return boolean | 
            
                                                                                                            
                            
            
                                    
            
            
                | 223 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 224 |  |  |     abstract public function isMultiple(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 225 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 226 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 227 |  |  |      * Check if input is being rendered | 
            
                                                                                                            
                            
            
                                    
            
            
                | 228 |  |  |      *  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 229 |  |  |      * @return boolean | 
            
                                                                                                            
                            
            
                                    
            
            
                | 230 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 231 |  |  |     abstract public function isRendering(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 232 |  |  |      | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 233 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 234 |  |  |  | 
            
                        
In PHP traits cannot be used for type-hinting as they do not define a well-defined structure. This is because any class that uses a trait can rename that trait’s methods.
If you would like to return an object that has a guaranteed set of methods, you could create a companion interface that lists these methods explicitly.