| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * Directus – <http://getdirectus.com> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * @link      The canonical repository – <https://github.com/directus/directus> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  * @copyright Copyright 2006-2016 RANGER Studio, LLC – <http://rangerstudio.com> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  * @license   GNU General Public License (v3) – <http://www.gnu.org/copyleft/gpl.html> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  | namespace Directus\SDK\Response; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | use Directus\Util\ArrayUtils; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |  * Entry | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |  * @author Welling Guzmán <[email protected]> | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 18 |  |  |  */ | 
            
                                                                        
                            
            
                                    
            
            
                | 19 |  |  | class Entry implements ResponseInterface, \ArrayAccess | 
            
                                                                        
                            
            
                                    
            
            
                | 20 |  |  | { | 
            
                                                                        
                            
            
                                    
            
            
                | 21 |  |  |     /** | 
            
                                                                        
                            
            
                                    
            
            
                | 22 |  |  |      * @var array | 
            
                                                                        
                            
            
                                    
            
            
                | 23 |  |  |      */ | 
            
                                                                        
                            
            
                                    
            
            
                | 24 |  |  |     protected $data = null; | 
            
                                                                        
                            
            
                                    
            
            
                | 25 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 26 |  |  |     /** | 
            
                                                                        
                            
            
                                    
            
            
                | 27 |  |  |      * @var array | 
            
                                                                        
                            
            
                                    
            
            
                | 28 |  |  |      */ | 
            
                                                                        
                            
            
                                    
            
            
                | 29 |  |  |     protected $rawData = null; | 
            
                                                                        
                            
            
                                    
            
            
                | 30 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 31 |  |  |     /** | 
            
                                                                        
                            
            
                                    
            
            
                | 32 |  |  |      * @var Entry | 
            
                                                                        
                            
            
                                    
            
            
                | 33 |  |  |      */ | 
            
                                                                        
                            
            
                                    
            
            
                | 34 |  |  |     protected $metadata = null; | 
            
                                                                        
                            
            
                                    
            
            
                | 35 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 36 |  |  |     /** | 
            
                                                                        
                            
            
                                    
            
            
                | 37 |  |  |      * Entry constructor. | 
            
                                                                        
                            
            
                                    
            
            
                | 38 |  |  |      * | 
            
                                                                        
                            
            
                                    
            
            
                | 39 |  |  |      * @param $data | 
            
                                                                        
                            
            
                                    
            
            
                | 40 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |     public function __construct($data) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |         $this->rawData = $data; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |         if (!is_array($data)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |             return; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |         // Support API 1.1 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |         if (isset($data['data']) && is_array($data['data'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |             $this->metadata = new static(ArrayUtils::get($data, 'meta', [])); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |             unset($data['meta']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |             $data = $data['data']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |         foreach($data as $field => $value) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |             if (isset($value['rows']) || (isset($value['data']) && ArrayUtils::isNumericKeys($value['data']))) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |                 $this->data[$field] = new EntryCollection($value); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |             } else if (is_array($value)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |                 $this->data[$field] = new static($value); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |             } else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |                 $this->data[$field] = $value; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |             } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |         } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 65 |  |  |     } | 
            
                                                                        
                            
            
                                    
            
            
                | 66 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 67 |  |  |     /** | 
            
                                                                        
                            
            
                                    
            
            
                | 68 |  |  |      * Get the entry data | 
            
                                                                        
                            
            
                                    
            
            
                | 69 |  |  |      * | 
            
                                                                        
                            
            
                                    
            
            
                | 70 |  |  |      * @return array | 
            
                                                                        
                            
            
                                    
            
            
                | 71 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |     public function getData() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |         return $this->data; | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 75 |  |  |     } | 
            
                                                                        
                            
            
                                    
            
            
                | 76 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 77 |  |  |     /** | 
            
                                                                        
                            
            
                                    
            
            
                | 78 |  |  |      * Get the entry metadata | 
            
                                                                        
                            
            
                                    
            
            
                | 79 |  |  |      * | 
            
                                                                        
                            
            
                                    
            
            
                | 80 |  |  |      * @return Entry | 
            
                                                                        
                            
            
                                    
            
            
                | 81 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  |     public function getMetaData() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |         return $this->metadata; | 
                            
                    |  |  |  | 
                                                                                        
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                | 85 |  |  |     } | 
            
                                                                        
                            
            
                                    
            
            
                | 86 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 87 |  |  |     /** | 
            
                                                                        
                            
            
                                    
            
            
                | 88 |  |  |      * @return array | 
            
                                                                        
                            
            
                                    
            
            
                | 89 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  |     public function getRawData() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  |         return $this->rawData; | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 93 |  |  |     } | 
            
                                                                        
                            
            
                                    
            
            
                | 94 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  |     public function offsetExists($offset) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  |         return array_key_exists($offset, $this->data); | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 98 |  |  |     } | 
            
                                                                        
                            
            
                                    
            
            
                | 99 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  |     public function offsetGet($offset) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  |         return $this->data[$offset]; | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 103 |  |  |     } | 
            
                                                                        
                            
            
                                    
            
            
                | 104 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  |     public function offsetSet($offset, $value) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  |         throw new \BadMethodCallException('Entry is read only'); | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 108 |  |  |     } | 
            
                                                                        
                            
            
                                    
            
            
                | 109 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  |     public function offsetUnset($offset) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  |         throw new \BadMethodCallException('Entry is read only'); | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 113 |  |  |     } | 
            
                                                                        
                            
            
                                    
            
            
                | 114 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  |     public function __get($name) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  |         if (array_key_exists($name, $this->data)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  |             return $this->data[$name]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  |         throw new \InvalidArgumentException('Invalid property: ' . $name); | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 122 |  |  |     } | 
            
                                                                        
                            
            
                                    
            
            
                | 123 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  |     public function __set($name, $value) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  |         throw new \BadMethodCallException('Entry is read only'); | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 127 |  |  |     } | 
            
                                                                        
                            
            
                                    
            
            
                | 128 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 129 |  |  |     /** | 
            
                                                                        
                            
            
                                    
            
            
                | 130 |  |  |      * Gets the object representation of this entry | 
            
                                                                        
                            
            
                                    
            
            
                | 131 |  |  |      * | 
            
                                                                        
                            
            
                                    
            
            
                | 132 |  |  |      * @return object | 
            
                                                                        
                            
            
                                    
            
            
                | 133 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  |     public function jsonSerialize() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  |         return (object) [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  |             'metadata' => $this->getMetaData(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  |             'data' => $this->getData() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  |         ]; | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 140 |  |  |     } | 
            
                                                        
            
                                    
            
            
                | 141 |  |  | } | 
            
                        
If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.
Let’s take a look at an example:
Our function
my_functionexpects aPostobject, and outputs the author of the post. The base classPostreturns a simple string and outputting a simple string will work just fine. However, the child classBlogPostwhich is a sub-type ofPostinstead decided to return anobject, and is therefore violating the SOLID principles. If aBlogPostwere passed tomy_function, PHP would not complain, but ultimately fail when executing thestrtouppercall in its body.