Laravel-Backpack /
CRUD
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| Total Complexity | 59 |
| Total Lines | 373 |
| 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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| 8 | trait Validation |
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| 9 | { |
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| 10 | /** |
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| 11 | * Adds the required rules from an array and allows validation of that array. |
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| 12 | * |
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| 13 | * @param array $requiredFields |
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| 14 | */ |
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| 15 | public function setValidationFromArray(array $rules, array $messages = []) |
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| 16 | { |
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| 17 | $this->setRequiredFields($rules); |
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| 18 | $this->setOperationSetting('validationRules', array_merge($this->getOperationSetting('validationRules') ?? [], $rules)); |
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| 19 | $this->setOperationSetting('validationMessages', array_merge($this->getOperationSetting('validationMessages') ?? [], $messages)); |
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| 20 | } |
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| 21 | |||
| 22 | /** |
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| 23 | * Take the rules defined on fields and create a validation |
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| 24 | * array from them. |
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| 25 | */ |
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| 26 | public function setValidationFromFields() |
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| 27 | { |
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| 28 | $fields = $this->getOperationSetting('fields'); |
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| 29 | |||
| 30 | // construct the validation rules array |
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| 31 | // (eg. ['name' => 'required|min:2']) |
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| 32 | $rules = $this->getValidationRulesFromFieldsAndSubfields($fields); |
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| 33 | |||
| 34 | // construct the validation messages array |
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| 35 | // (eg. ['title.required' => 'You gotta write smth man.']) |
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| 36 | $messages = $this->getValidationMessagesFromFieldsAndSubfields($fields); |
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| 37 | |||
| 38 | $this->setValidationFromArray($rules, $messages); |
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| 39 | } |
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| 40 | |||
| 41 | /** |
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| 42 | * Return the rules for the fields and subfields in the current crud panel. |
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| 43 | * |
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| 44 | * @param array $fields |
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| 45 | * @return array |
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| 46 | */ |
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| 47 | private function getValidationRulesFromFieldsAndSubfields($fields) |
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| 48 | { |
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| 49 | $rules = collect($fields) |
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| 50 | ->filter(function ($value, $key) { |
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| 51 | // only keep fields where 'validationRules' OR there are subfields |
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| 52 | return array_key_exists('validationRules', $value) || array_key_exists('subfields', $value); |
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| 53 | })->map(function ($item, $key) { |
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| 54 | $validationRules = []; |
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| 55 | // only keep the rules, not the entire field definition |
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| 56 | if (isset($item['validationRules'])) { |
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| 57 | $validationRules[$key] = $item['validationRules']; |
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| 58 | } |
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| 59 | // add validation rules for subfields |
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| 60 | if (array_key_exists('subfields', $item)) { |
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| 61 | $subfieldsWithValidation = array_filter($item['subfields'], function ($subfield) { |
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| 62 | return array_key_exists('validationRules', $subfield); |
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| 63 | }); |
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| 64 | |||
| 65 | foreach ($subfieldsWithValidation as $subfield) { |
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| 66 | $validationRules[$item['name'].'.*.'.$subfield['name']] = $subfield['validationRules']; |
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| 67 | } |
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| 68 | } |
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| 69 | |||
| 70 | return $validationRules; |
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| 71 | })->toArray(); |
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| 72 | |||
| 73 | return array_merge(...array_values($rules)); |
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| 74 | } |
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| 75 | |||
| 76 | /** |
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| 77 | * Return the messages for the fields and subfields in the current crud panel. |
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| 78 | * |
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| 79 | * @param array $fields |
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| 80 | * @return array |
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| 81 | */ |
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| 82 | private function getValidationMessagesFromFieldsAndSubfields($fields) |
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| 110 | } |
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| 111 | |||
| 112 | /** |
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| 113 | * Mark a FormRequest file as required for the current operation, in Settings. |
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| 114 | * Adds the required rules to an array for easy access. |
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| 115 | * |
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| 116 | * @param string $class Class that extends FormRequest |
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| 117 | */ |
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| 118 | public function setValidationFromRequest($class) |
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| 119 | { |
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| 120 | $this->setFormRequest($class); |
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| 121 | $this->setRequiredFields($class); |
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| 122 | } |
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| 123 | |||
| 124 | /** |
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| 125 | * Mark a FormRequest file as required for the current operation, in Settings. |
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| 126 | * Adds the required rules to an array for easy access. |
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| 127 | * |
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| 128 | * @param string|array $classOrRulesArray Class that extends FormRequest or array of validation rules |
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| 129 | * @param array $messages Array of validation messages. |
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| 130 | */ |
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| 131 | public function setValidation($classOrRulesArray = false, $messages = []) |
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| 132 | { |
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| 133 | if (! $classOrRulesArray) { |
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| 134 | $this->setValidationFromFields(); |
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| 135 | } elseif (is_array($classOrRulesArray)) { |
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| 136 | $this->setValidationFromArray($classOrRulesArray, $messages); |
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| 137 | } elseif (is_string($classOrRulesArray) && class_exists($classOrRulesArray) && is_a($classOrRulesArray, FormRequest::class, true)) { |
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| 138 | $this->setValidationFromRequest($classOrRulesArray); |
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| 139 | } else { |
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| 140 | abort(500, 'Please pass setValidation() nothing, a rules array or a FormRequest class.'); |
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| 141 | } |
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| 142 | } |
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| 143 | |||
| 144 | /** |
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| 145 | * Remove the current FormRequest from configuration, so it will no longer be validated. |
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| 146 | */ |
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| 147 | public function unsetValidation() |
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| 148 | { |
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| 149 | $this->setOperationSetting('formRequest', false); |
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| 150 | $this->setOperationSetting('validationRules', []); |
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| 151 | $this->setOperationSetting('validationMessages', []); |
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| 152 | $this->setOperationSetting('requiredFields', []); |
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| 153 | } |
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| 154 | |||
| 155 | /** |
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| 156 | * Remove the current FormRequest from configuration, so it will no longer be validated. |
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| 157 | */ |
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| 158 | public function disableValidation() |
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| 159 | { |
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| 160 | $this->unsetValidation(); |
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| 161 | } |
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| 162 | |||
| 163 | /** |
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| 164 | * Mark a FormRequest file as required for the current operation, in Settings. |
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| 165 | * |
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| 166 | * @param string $class Class that extends FormRequest |
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| 167 | */ |
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| 168 | public function setFormRequest($class) |
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| 169 | { |
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| 170 | $this->setOperationSetting('formRequest', $class); |
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| 171 | } |
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| 172 | |||
| 173 | /** |
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| 174 | * Get the current form request file, in any. |
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| 175 | * Returns null if no FormRequest is required for the current operation. |
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| 176 | * |
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| 177 | * @return string Class that extends FormRequest |
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| 178 | */ |
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| 179 | public function getFormRequest() |
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| 180 | { |
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| 181 | return $this->getOperationSetting('formRequest'); |
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| 182 | } |
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| 183 | |||
| 184 | /** |
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| 185 | * Run the authorization and validation for the current crud panel. |
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| 186 | * That authorization is gathered from 3 places: |
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| 187 | * - the FormRequest when provided. |
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| 188 | * - the rules added in the controller. |
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| 189 | * - the rules defined in the fields itself. |
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| 190 | * |
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| 191 | * @return \Illuminate\Http\Request |
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| 192 | */ |
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| 193 | public function validateRequest() |
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| 194 | { |
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| 195 | $formRequest = $this->getFormRequest(); |
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| 196 | |||
| 197 | $rules = $this->getOperationSetting('validationRules') ?? []; |
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| 198 | $messages = $this->getOperationSetting('validationMessages') ?? []; |
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| 199 | |||
| 200 | if ($formRequest) { |
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| 201 | // when there is no validation in the fields, just validate the form request. |
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| 202 | if (empty($rules)) { |
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| 203 | return app($formRequest); |
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| 204 | } |
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| 205 | |||
| 206 | $formRequest = (new $formRequest)->createFrom($this->getRequest()); |
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| 207 | $extendedRules = $this->mergeRules($formRequest, $rules); |
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| 208 | $extendedMessages = array_merge($messages, $formRequest->messages()); |
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| 209 | |||
| 210 | // validate the complete request with FormRequest + controller validation + field validation (our anonymous class) |
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| 211 | return $this->checkRequestValidity($extendedRules, $extendedMessages, $formRequest); |
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| 212 | } |
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| 213 | |||
| 214 | return ! empty($rules) ? $this->checkRequestValidity($rules, $messages) : $this->getRequest(); |
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| 215 | } |
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| 216 | |||
| 217 | /** |
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| 218 | * Return an array containing the request rules and the field/controller rules merged. |
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| 219 | * The rules in request will take precedence over the ones in controller/fields. |
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| 220 | * |
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| 221 | * @param \Illuminate\Http\Request $request |
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| 222 | * @param array $rules |
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| 223 | * @return array |
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| 224 | */ |
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| 225 | private function mergeRules($request, $rules) |
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| 226 | { |
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| 227 | $extendedRules = []; |
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| 228 | $requestRules = $this->getRequestRulesAsArray($request); |
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| 229 | $rules = array_map(function ($ruleDefinition) { |
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| 230 | return is_array($ruleDefinition) ? $ruleDefinition : explode('|', $ruleDefinition); |
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| 231 | }, $rules); |
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| 232 | |||
| 233 | foreach ($requestRules as $ruleKey => $rule) { |
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| 234 | $extendedRules[$ruleKey] = array_key_exists($ruleKey, $rules) ? array_merge($rule, $rules[$ruleKey]) : $rule; |
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| 235 | unset($rules[$ruleKey]); |
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| 236 | } |
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| 237 | |||
| 238 | return array_merge($rules, $extendedRules); |
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| 239 | } |
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| 240 | |||
| 241 | /** |
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| 242 | * Return the request rules as an array of rules if developer provided a rule string configuration. |
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| 243 | * |
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| 244 | * @param \Illuminate\Http\Request $request |
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| 245 | * @return array |
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| 246 | */ |
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| 247 | private function getRequestRulesAsArray($request) |
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| 248 | { |
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| 249 | $requestRules = []; |
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| 250 | foreach ($request->rules() as $ruleKey => $rule) { |
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| 251 | $requestRules[$ruleKey] = is_array($rule) ? $rule : explode('|', $rule); |
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| 252 | } |
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| 253 | |||
| 254 | return $requestRules; |
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| 255 | } |
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| 256 | |||
| 257 | /** |
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| 258 | * Checks if the request is valid against the rules. |
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| 259 | * |
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| 260 | * @param array $rules |
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| 261 | * @param array $messages |
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| 262 | * @param \Illuminate\Http\Request|null $request |
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| 263 | * @return \Illuminate\Http\Request |
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| 264 | */ |
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| 265 | private function checkRequestValidity($rules, $messages, $request = null) |
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| 266 | { |
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| 267 | $request = $request ?? $this->getRequest(); |
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| 268 | $request->validate($rules, $messages); |
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| 269 | |||
| 270 | return $request; |
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| 271 | } |
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| 272 | |||
| 273 | /** |
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| 274 | * Parse a FormRequest class, figure out what inputs are required |
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| 275 | * and store this knowledge in the current object. |
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| 276 | * |
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| 277 | * @param string|array $classOrRulesArray Class that extends FormRequest or rules array |
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| 278 | */ |
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| 279 | public function setRequiredFields($classOrRulesArray) |
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| 280 | { |
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| 281 | $requiredFields = $this->getOperationSetting('requiredFields') ?? []; |
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| 282 | |||
| 283 | if (is_array($classOrRulesArray)) { |
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| 284 | $rules = $classOrRulesArray; |
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| 285 | } else { |
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| 286 | $formRequest = new $classOrRulesArray(); |
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| 287 | $rules = $formRequest->rules(); |
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| 288 | } |
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| 289 | |||
| 290 | if (count($rules)) { |
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| 291 | foreach ($rules as $key => $rule) { |
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| 292 | if ( |
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| 293 | (is_string($rule) && strpos($rule, 'required') !== false && strpos($rule, 'required_') === false) || |
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| 294 | (is_array($rule) && array_search('required', $rule) !== false && array_search('required_', $rule) === false) |
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| 295 | ) { |
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| 296 | if (Str::contains($key, '.')) { |
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| 297 | $key = Str::dotsToSquareBrackets($key, ['*']); |
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| 298 | } |
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| 299 | |||
| 300 | $requiredFields[] = $key; |
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| 301 | } |
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| 302 | } |
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| 303 | } |
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| 304 | |||
| 305 | // merge any previous required fields with current ones |
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| 306 | $requiredFields = array_merge($this->getOperationSetting('requiredFields') ?? [], $requiredFields); |
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| 307 | |||
| 308 | // 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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| 309 | // 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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| 310 | // no sense in doing it, so array_unique() it is. |
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| 311 | $requiredFields = array_unique($requiredFields); |
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| 312 | |||
| 313 | $this->setOperationSetting('requiredFields', $requiredFields); |
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| 314 | } |
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| 315 | |||
| 316 | /** |
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| 317 | * Check the current object to see if an input is required |
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| 318 | * for the given operation. |
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| 319 | * |
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| 320 | * @param string $inputKey Field or input name. |
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| 321 | * @param string $operation create / update |
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| 322 | * @return bool |
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| 323 | */ |
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| 324 | public function isRequired($inputKey) |
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| 325 | { |
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| 326 | if (! $this->hasOperationSetting('requiredFields')) { |
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| 327 | return false; |
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| 328 | } |
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| 329 | |||
| 330 | if (Str::contains($inputKey, '.')) { |
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| 331 | $inputKey = Str::dotsToSquareBrackets($inputKey, ['*']); |
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| 332 | } |
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| 333 | |||
| 334 | return in_array($inputKey, $this->getOperationSetting('requiredFields')); |
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| 335 | } |
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| 336 | |||
| 337 | /** |
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| 338 | * Add the validation setup by developer in field `validationRules` to the crud validation. |
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| 339 | * |
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| 340 | * @param array $field - the field we want to get the validation from. |
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| 341 | * @param bool|string $parent - the parent name when setting up validation for subfields. |
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| 342 | */ |
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| 343 | private function setupFieldValidation($field, $parent = false) |
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| 344 | { |
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| 345 | [$rules, $messages] = $this->getValidationRulesAndMessagesFromField($field, $parent); |
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| 346 | |||
| 347 | if (! empty($rules)) { |
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| 348 | $this->setValidation($rules, $messages); |
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| 349 | } |
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| 350 | } |
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| 351 | |||
| 352 | /** |
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| 353 | * Return the array of rules and messages with the validation key accordingly set |
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| 354 | * to match the field or the subfield accordingly. |
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| 355 | * |
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| 356 | * @param array $field - the field we want to get the rules and messages from. |
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| 357 | * @param bool|string $parent - the parent name when setting up validation for subfields. |
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| 358 | */ |
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| 359 | private function getValidationRulesAndMessagesFromField($field, $parent = false) |
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| 381 | } |
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| 382 | } |
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| 383 |
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