Laravel-Backpack /
CRUD
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| Total Complexity | 75 |
| Total Lines | 487 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Complex classes like Validation often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Validation, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 9 | trait Validation |
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| 10 | { |
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| 11 | /** |
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| 12 | * Adds the required rules from an array and allows validation of that array. |
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| 13 | * |
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| 14 | * @param array $requiredFields |
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| 15 | */ |
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| 16 | public function setValidationFromArray(array $rules, array $messages = [], array $attributes = []) |
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| 17 | { |
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| 18 | $this->setRequiredFields($rules); |
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| 19 | $this->setOperationSetting('validationRules', array_merge($this->getOperationSetting('validationRules') ?? [], $rules)); |
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| 20 | $this->setOperationSetting('validationMessages', array_merge($this->getOperationSetting('validationMessages') ?? [], $messages)); |
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| 21 | $this->setOperationSetting('validationAttributes', array_merge($this->getOperationSetting('validationAttributes') ?? [], $attributes)); |
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| 22 | } |
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| 23 | |||
| 24 | /** |
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| 25 | * Take the rules defined on fields and create a validation |
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| 26 | * array from them. |
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| 27 | */ |
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| 28 | public function setValidationFromFields() |
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| 29 | { |
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| 30 | $fields = $this->getOperationSetting('fields'); |
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| 31 | |||
| 32 | // construct the validation rules array |
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| 33 | // (eg. ['name' => 'required|min:2']) |
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| 34 | $rules = $this->getValidationRulesFromFieldsAndSubfields($fields); |
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| 35 | |||
| 36 | // construct the validation messages array |
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| 37 | // (eg. ['title.required' => 'You gotta write smth man.']) |
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| 38 | $messages = $this->getValidationMessagesFromFieldsAndSubfields($fields); |
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| 39 | |||
| 40 | // construct the validation attributes array |
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| 41 | // (eg. ['user_id' => 'username']) |
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| 42 | $attributes = $this->getValidationAttributesFromFieldsAndSubfields($fields); |
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| 43 | |||
| 44 | $this->setValidationFromArray($rules, $messages, $attributes); |
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| 45 | } |
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| 46 | |||
| 47 | /** |
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| 48 | * Mark a FormRequest file as required for the current operation, in Settings. |
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| 49 | * Adds the required rules to an array for easy access. |
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| 50 | * |
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| 51 | * @param string $class Class that extends FormRequest |
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| 52 | */ |
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| 53 | public function setValidationFromRequest($class) |
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| 54 | { |
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| 55 | $this->setFormRequest($class); |
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| 56 | $this->setRequiredFields($class); |
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| 57 | } |
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| 58 | |||
| 59 | /** |
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| 60 | * Mark a FormRequest file as required for the current operation, in Settings. |
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| 61 | * Adds the required rules to an array for easy access. |
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| 62 | * |
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| 63 | * @param string|array $classOrRulesArray Class that extends FormRequest or array of validation rules |
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| 64 | * @param array $messages Array of validation messages. |
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| 65 | * @param array $attributes Array of validation attributes |
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| 66 | */ |
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| 67 | public function setValidation($classOrRulesArray = false, $messages = [], $attributes = []) |
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| 68 | { |
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| 69 | if (! $classOrRulesArray) { |
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| 70 | $this->setValidationFromFields(); |
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| 71 | } elseif (is_array($classOrRulesArray)) { |
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| 72 | $this->setValidationFromArray($classOrRulesArray, $messages, $attributes); |
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| 73 | } elseif (is_string($classOrRulesArray) && class_exists($classOrRulesArray) && is_a($classOrRulesArray, FormRequest::class, true)) { |
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| 74 | $this->setValidationFromRequest($classOrRulesArray); |
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| 75 | } else { |
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| 76 | abort(500, 'Please pass setValidation() nothing, a rules array or a FormRequest class.', ['developer-error-exception']); |
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| 77 | } |
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| 78 | } |
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| 79 | |||
| 80 | /** |
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| 81 | * Remove the current FormRequest from configuration, so it will no longer be validated. |
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| 82 | */ |
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| 83 | public function unsetValidation() |
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| 84 | { |
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| 85 | $this->setOperationSetting('formRequest', false); |
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| 86 | $this->setOperationSetting('validationRules', []); |
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| 87 | $this->setOperationSetting('validationMessages', []); |
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| 88 | $this->setOperationSetting('validationAttributes', []); |
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| 89 | $this->setOperationSetting('requiredFields', []); |
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| 90 | } |
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| 91 | |||
| 92 | /** |
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| 93 | * Remove the current FormRequest from configuration, so it will no longer be validated. |
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| 94 | */ |
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| 95 | public function disableValidation() |
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| 96 | { |
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| 97 | $this->unsetValidation(); |
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| 98 | } |
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| 99 | |||
| 100 | /** |
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| 101 | * Mark a FormRequest file as required for the current operation, in Settings. |
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| 102 | * |
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| 103 | * @param string $class Class that extends FormRequest |
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| 104 | */ |
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| 105 | public function setFormRequest($class) |
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| 106 | { |
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| 107 | $this->setOperationSetting('formRequest', $class); |
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| 108 | } |
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| 109 | |||
| 110 | /** |
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| 111 | * Get the current form request file, in any. |
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| 112 | * Returns null if no FormRequest is required for the current operation. |
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| 113 | * |
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| 114 | * @return string Class that extends FormRequest |
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| 115 | */ |
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| 116 | public function getFormRequest() |
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| 119 | } |
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| 120 | |||
| 121 | /** |
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| 122 | * Run the authorization and validation for the current crud panel. |
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| 123 | * That authorization is gathered from 3 places: |
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| 124 | * - the FormRequest when provided. |
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| 125 | * - the rules added in the controller. |
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| 126 | * - the rules defined in the fields itself. |
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| 127 | * |
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| 128 | * @return \Illuminate\Http\Request |
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| 129 | */ |
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| 130 | public function validateRequest() |
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| 151 | } |
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| 152 | |||
| 153 | /** |
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| 154 | * Merge the form request validation with the fields validation. |
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| 155 | * |
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| 156 | * @param FormRequest $request |
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| 157 | * @param array|null $rules |
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| 158 | * @param array|null $messages |
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| 159 | * @param array|null $attributes |
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| 160 | * @return array |
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| 161 | */ |
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| 162 | public function mergeRequestAndFieldRules($request, $rules = null, $messages = null, $attributes = null) |
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| 174 | } |
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| 175 | |||
| 176 | /** |
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| 177 | * Parse a FormRequest class, figure out what inputs are required |
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| 178 | * and store this knowledge in the current object. |
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| 179 | * |
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| 180 | * @param string|array $classOrRulesArray Class that extends FormRequest or rules array |
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| 181 | */ |
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| 182 | public function setRequiredFields($classOrRulesArray) |
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| 183 | { |
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| 184 | $requiredFields = $this->getOperationSetting('requiredFields') ?? []; |
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| 185 | |||
| 186 | if (is_array($classOrRulesArray)) { |
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| 187 | $rules = $classOrRulesArray; |
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| 188 | } else { |
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| 189 | $formRequest = new $classOrRulesArray(); |
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| 190 | $rules = $formRequest->rules(); |
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| 191 | } |
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| 192 | |||
| 193 | if (count($rules)) { |
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| 194 | foreach ($rules as $key => $validationRules) { |
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| 195 | if (is_string($validationRules)) { |
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| 196 | $validationRules = explode('|', $validationRules); |
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| 197 | } |
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| 198 | if (! is_array($validationRules)) { |
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| 199 | $validationRules = [$validationRules]; |
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| 200 | } |
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| 201 | foreach ($validationRules as $rule) { |
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| 202 | if (is_a($rule, BackpackCustomRule::class, true)) { |
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| 203 | foreach ($rule->getFieldRules() as $customValidatorRules) { |
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| 204 | if ($requiredFieldName = $this->checkIfRuleIsRequired($key, $customValidatorRules)) { |
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| 205 | // Field is required, move on to next field |
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| 206 | $requiredFields[] = $requiredFieldName; |
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| 207 | break; |
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| 208 | } |
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| 209 | } |
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| 210 | |||
| 211 | // Try next rule for field |
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| 212 | continue; |
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| 213 | } |
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| 214 | |||
| 215 | if ($requiredFieldName = $this->checkIfRuleIsRequired($key, $rule)) { |
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| 216 | // Field is required, move on to next field |
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| 217 | $requiredFields[] = $requiredFieldName; |
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| 218 | break; |
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| 219 | } |
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| 220 | } |
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| 221 | } |
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| 222 | } |
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| 223 | |||
| 224 | // merge any previous required fields with current ones |
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| 225 | $requiredFields = array_merge($this->getOperationSetting('requiredFields') ?? [], $requiredFields); |
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| 226 | |||
| 227 | // since this COULD BE called twice (to support the previous syntax where developers needed to call `setValidation` after the field definition) |
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| 228 | // and to make this change non-breaking, we are going to return an unique array. There is NO WARM returning repeated names, but there is also |
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| 229 | // no sense in doing it, so array_unique() it is. |
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| 230 | $requiredFields = array_unique($requiredFields); |
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| 231 | |||
| 232 | $this->setOperationSetting('requiredFields', $requiredFields); |
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| 233 | } |
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| 234 | |||
| 235 | /** |
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| 236 | * Check the current object to see if an input is required |
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| 237 | * for the given operation. |
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| 238 | * |
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| 239 | * @param string $inputKey Field or input name. |
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| 240 | * @param string $operation create / update |
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| 241 | * @return bool |
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| 242 | */ |
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| 243 | public function isRequired($inputKey) |
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| 244 | { |
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| 245 | if (! $this->hasOperationSetting('requiredFields')) { |
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| 246 | return false; |
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| 247 | } |
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| 248 | |||
| 249 | if (Str::contains($inputKey, '.')) { |
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| 250 | $inputKey = Str::dotsToSquareBrackets($inputKey, ['*']); |
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| 251 | } |
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| 252 | |||
| 253 | return in_array($inputKey, $this->getOperationSetting('requiredFields')); |
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| 254 | } |
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| 255 | |||
| 256 | /** |
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| 257 | * Add the validation setup by developer in field `validationRules` to the crud validation. |
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| 258 | * |
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| 259 | * @param array $field - the field we want to get the validation from. |
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| 260 | * @param bool|string $parent - the parent name when setting up validation for subfields. |
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| 261 | */ |
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| 262 | private function setupFieldValidation($field, $parent = false) |
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| 263 | { |
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| 264 | [$rules, $messages, $attributes] = $this->getValidationDataFromField($field, $parent); |
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| 265 | |||
| 266 | if (! empty($rules)) { |
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| 267 | $this->setValidation($rules, $messages, $attributes); |
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| 268 | } |
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| 269 | } |
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| 270 | |||
| 271 | /** |
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| 272 | * Return the messages for the fields and subfields in the current crud panel. |
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| 273 | * |
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| 274 | * @param array $fields |
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| 275 | * @return array |
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| 276 | */ |
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| 277 | private function getValidationMessagesFromFieldsAndSubfields($fields) |
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| 305 | } |
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| 306 | |||
| 307 | /** |
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| 308 | * Return the attributes for the fields and subfields in the current crud panel. |
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| 309 | * |
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| 310 | * @param array $fields |
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| 311 | * @return array |
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| 312 | */ |
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| 313 | private function getValidationAttributesFromFieldsAndSubfields($fields) |
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| 314 | { |
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| 315 | $attributes = []; |
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| 316 | collect($fields) |
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| 317 | ->filter(function ($value, $key) { |
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| 318 | // only keep fields where 'validationAttribute' exists OR there are subfields |
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| 319 | return array_key_exists('validationAttribute', $value) || array_key_exists('subfields', $value); |
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| 320 | })->each(function ($item, $key) use (&$attributes) { |
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| 321 | if (isset($item['validationAttribute'])) { |
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| 322 | $attributes[$key] = $item['validationAttribute']; |
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| 323 | } |
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| 324 | // add attributes from subfields |
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| 325 | if (array_key_exists('subfields', $item)) { |
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| 326 | $subfieldsWithValidationAttribute = array_filter($item['subfields'], function ($subfield) { |
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| 327 | return array_key_exists('validationAttribute', $subfield); |
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| 328 | }); |
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| 329 | |||
| 330 | foreach ($subfieldsWithValidationAttribute as $subfield) { |
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| 331 | $attributes[$item['name'].'.*.'.$subfield['name']] = $subfield['validationAttribute']; |
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| 332 | } |
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| 333 | } |
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| 334 | })->toArray(); |
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| 335 | |||
| 336 | return $attributes; |
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| 337 | } |
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| 338 | |||
| 339 | /** |
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| 340 | * Return the rules for the fields and subfields in the current crud panel. |
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| 341 | * |
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| 342 | * @param array $fields |
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| 343 | * @return array |
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| 344 | */ |
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| 345 | private function getValidationRulesFromFieldsAndSubfields($fields) |
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| 346 | { |
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| 347 | $rules = collect($fields) |
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| 348 | ->filter(function ($value, $key) { |
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| 349 | // only keep fields where 'validationRules' OR there are subfields |
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| 350 | return array_key_exists('validationRules', $value) || array_key_exists('subfields', $value); |
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| 351 | })->map(function ($item, $key) { |
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| 352 | $validationRules = []; |
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| 353 | // only keep the rules, not the entire field definition |
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| 354 | if (isset($item['validationRules'])) { |
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| 355 | $validationRules[$key] = $item['validationRules']; |
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| 356 | } |
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| 357 | // add validation rules for subfields |
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| 358 | if (array_key_exists('subfields', $item)) { |
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| 359 | $subfieldsWithValidation = array_filter($item['subfields'], function ($subfield) { |
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| 360 | return array_key_exists('validationRules', $subfield); |
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| 361 | }); |
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| 362 | |||
| 363 | foreach ($subfieldsWithValidation as $subfield) { |
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| 364 | $validationRules[$item['name'].'.*.'.$subfield['name']] = $subfield['validationRules']; |
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| 365 | } |
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| 366 | } |
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| 367 | |||
| 368 | return $validationRules; |
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| 369 | })->toArray(); |
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| 370 | |||
| 371 | return array_merge(...array_values($rules)); |
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| 372 | } |
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| 373 | |||
| 374 | /** |
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| 375 | * Return the array of rules and messages with the validation key accordingly set |
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| 376 | * to match the field or the subfield accordingly. |
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| 377 | * |
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| 378 | * @param array $field - the field we want to get the rules and messages from. |
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| 379 | * @param bool|string $parent - the parent name when setting up validation for subfields. |
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| 380 | */ |
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| 381 | private function getValidationDataFromField($field, $parent = false) |
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| 382 | { |
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| 383 | $rules = []; |
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| 384 | $messages = []; |
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| 385 | $attributes = []; |
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| 386 | |||
| 387 | foreach ((array) $field['name'] as $fieldName) { |
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| 388 | if ($parent) { |
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| 389 | $fieldName = $parent.'.*.'.$fieldName; |
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| 390 | } |
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| 391 | |||
| 392 | if (isset($field['validationRules'])) { |
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| 393 | $rules[$fieldName] = $field['validationRules']; |
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| 394 | } |
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| 395 | if (isset($field['validationMessages'])) { |
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| 396 | foreach ($field['validationMessages'] as $validator => $message) { |
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| 397 | $messages[$fieldName.'.'.$validator] = $message; |
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| 398 | } |
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| 399 | } |
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| 400 | if (isset($field['validationAttribute'])) { |
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| 401 | $attributes[$fieldName] = $field['validationAttribute']; |
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| 402 | } |
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| 403 | } |
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| 404 | |||
| 405 | return [$rules, $messages, $attributes]; |
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| 406 | } |
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| 407 | |||
| 408 | /** |
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| 409 | * Return an array containing the request rules and the field/controller rules merged. |
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| 410 | * The rules in request will take precedence over the ones in controller/fields. |
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| 411 | * |
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| 412 | * @param \Illuminate\Http\Request $request |
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| 413 | * @param array $rules |
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| 414 | * @return array |
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| 415 | */ |
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| 416 | private function mergeRules($request, $rules) |
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| 417 | { |
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| 418 | $extendedRules = []; |
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| 419 | $requestRules = $this->getRequestRulesAsArray($request); |
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| 420 | |||
| 421 | $rules = $this->getRulesAsArray($rules); |
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| 422 | |||
| 423 | foreach ($requestRules as $ruleKey => $rule) { |
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| 424 | $extendedRules[$ruleKey] = array_key_exists($ruleKey, $rules) ? array_merge($rule, $this->getRulesAsArray($rules[$ruleKey])) : $rule; |
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| 425 | unset($rules[$ruleKey]); |
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| 426 | } |
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| 427 | |||
| 428 | return array_merge($rules, $extendedRules); |
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| 429 | } |
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| 430 | |||
| 431 | /** |
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| 432 | * Return the request rules as an array of rules if developer provided a rule string configuration. |
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| 433 | * |
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| 434 | * @param \Illuminate\Http\Request $request |
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| 435 | * @return array |
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| 436 | */ |
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| 437 | private function getRequestRulesAsArray($request) |
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| 438 | { |
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| 439 | $requestRules = []; |
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| 440 | foreach ($request->rules() as $ruleKey => $rule) { |
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| 441 | $requestRules[$ruleKey] = $this->getRulesAsArray($rule); |
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| 442 | } |
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| 443 | |||
| 444 | return $requestRules; |
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| 445 | } |
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| 446 | |||
| 447 | /** |
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| 448 | * Checks if the request is valid against the rules. |
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| 449 | * |
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| 450 | * @param array $rules |
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| 451 | * @param array $messages |
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| 452 | * @param \Illuminate\Http\Request|null $request |
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| 453 | * @return \Illuminate\Http\Request |
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| 454 | */ |
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| 455 | private function checkRequestValidity($rules, $messages, $attributes, $request = null) |
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| 456 | { |
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| 457 | $request = $request ?? $this->getRequest(); |
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| 458 | $request->validate($rules, $messages, $attributes); |
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| 459 | |||
| 460 | return $request; |
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| 461 | } |
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| 462 | |||
| 463 | /** |
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| 464 | * Check if the given rule is a required rule. |
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| 465 | * |
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| 466 | * @param string $key |
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| 467 | * @param string $rule |
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| 468 | * @return string|bool |
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| 469 | */ |
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| 470 | private function checkIfRuleIsRequired($key, $rule) |
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| 484 | } |
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| 485 | |||
| 486 | /** |
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| 487 | * Prepare the rules as array. |
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| 488 | */ |
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| 489 | private function getRulesAsArray($rules) |
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| 490 | { |
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| 491 | if (is_array($rules) || is_a($rules, BackpackCustomRule::class, true)) { |
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| 492 | return $rules; |
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| 496 | } |
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| 497 | } |
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| 498 |
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