Total Complexity | 59 |
Total Lines | 459 |
Duplicated Lines | 0 % |
Changes | 0 |
Complex classes like ManagedCache 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 ManagedCache, and based on these observations, apply Extract Interface, too.
1 | <?php |
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14 | class ManagedCache |
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15 | { |
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16 | // Eloquent events. |
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17 | const EVENT_ELOQUENT_CREATED = 'eloquent.created'; |
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18 | const EVENT_ELOQUENT_UPDATED = 'eloquent.updated'; |
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19 | const EVENT_ELOQUENT_SAVED = 'eloquent.saved'; |
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20 | const EVENT_ELOQUENT_DELETED = 'eloquent.deleted'; |
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21 | const EVENT_ELOQUENT_RESTORED = 'eloquent.restored'; |
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22 | // Relation events. |
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23 | const EVENT_ELOQUENT_ATTACHED = 'eloquent.attached'; |
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24 | const EVENT_ELOQUENT_DETACHED = 'eloquent.detached'; |
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25 | |||
26 | // .. |
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27 | const TAG_MAP_CACHE_KEY = 'ManagedCache_TagMap'; |
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28 | |||
29 | /** |
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30 | * @var Dispatcher |
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31 | */ |
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32 | protected $dispatcher; |
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33 | |||
34 | /** |
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35 | * @var StoreContract |
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36 | */ |
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37 | protected $store; |
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38 | |||
39 | private $isDebugModeEnabled = false; |
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40 | |||
41 | protected $tagMap = []; |
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42 | |||
43 | /** |
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44 | * Constructor. |
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45 | * |
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46 | * @param Application $application |
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47 | */ |
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48 | public function __construct(Application $application) |
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49 | { |
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50 | $this->store = $application['cache.store']; |
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51 | if ( ! ($this->store->getStore() instanceof MemcachedStore)) { |
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52 | throw new Exception('Memcached not configured. Cache store is "' . class_basename($this->store) . '"'); |
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53 | } |
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54 | $this->dispatcher = $application['events']; |
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55 | $this->registerEventListener(); |
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56 | } |
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57 | |||
58 | public function enableDebugMode() |
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59 | { |
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60 | $this->isDebugModeEnabled = true; |
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61 | |||
62 | return $this; |
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63 | } |
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64 | |||
65 | public function isDebugModeEnabled() |
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66 | { |
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67 | return $this->isDebugModeEnabled; |
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68 | } |
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69 | |||
70 | public function getTagMap(): array |
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71 | { |
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72 | if (empty($this->tagMap)) { |
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73 | $this->tagMap = $this->store->get(self::TAG_MAP_CACHE_KEY, []); |
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74 | if ( ! is_array($this->tagMap)) { |
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75 | $this->tagMap = []; |
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76 | } |
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77 | } |
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78 | |||
79 | return $this->tagMap; |
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80 | } |
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81 | |||
82 | public function getTagsForKey(string $key): array |
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90 | } |
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91 | |||
92 | public function setTagsForKey(string $key, array $tags): void |
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97 | } |
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98 | |||
99 | public function deleteTagsForKey(string $key) |
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100 | { |
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101 | $this->getTagMap(); |
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102 | if (isset($this->tagMap[$key])) { |
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103 | unset($this->tagMap[$key]); |
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104 | $this->store->forever(self::TAG_MAP_CACHE_KEY, $this->tagMap); |
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105 | } |
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106 | } |
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107 | |||
108 | /** |
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109 | * Returns the Cache store instance. |
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110 | * |
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111 | * @return CacheRepository |
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112 | */ |
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113 | public function getStore(): CacheRepository |
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114 | { |
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115 | return $this->store; |
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116 | } |
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117 | |||
118 | /** |
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119 | * Register event listeners. |
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120 | */ |
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121 | protected function registerEventListener(): void |
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126 | } |
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127 | } |
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128 | |||
129 | /** |
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130 | * Handle an Eloquent event. |
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131 | * |
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132 | * @param string $eventKey |
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133 | * @param mixed $payload |
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134 | */ |
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135 | public function handleEloquentEvent($eventKey, $payload): void |
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136 | { |
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137 | // Extract the basic event name and the model name from the event key. |
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138 | $regex = '/^(' . implode('|', $this->getObservableEvents()) . '): ([a-zA-Z0-9\\\\]+)$/'; |
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139 | if ( ! preg_match($regex, $eventKey, $matches)) { |
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140 | return; |
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141 | } |
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142 | $eventName = $matches[1]; |
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143 | $modelName = $matches[2]; |
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144 | // Ensure $payload is always an array. |
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145 | if ( ! is_array($payload)) { |
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146 | $payload = [$payload]; |
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147 | } |
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148 | // Flush items that are tagged with this event (and no model). |
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149 | // i.e. items that should be flushed when this event happens to ANY instance of the model. |
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150 | $cacheTags = []; |
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151 | // Create a tag to flush stores tagged with: |
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152 | // - this Eloquent event, AND |
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153 | // - this Model class |
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154 | $cacheTags[] = new Condition($eventName, $modelName); |
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155 | foreach ($payload as $model) { |
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156 | if ( ! $this->isModel($model)) { |
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157 | continue; |
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158 | } |
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159 | $modelId = $model->getKey(); |
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160 | if ( ! empty($modelId)) { |
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161 | // Create a tag to flush stores tagged with: |
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162 | // - this Eloquent event, AND |
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163 | // - this Model instance |
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164 | $cacheTags[] = new Condition($eventName, $modelName, $modelId); |
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165 | } |
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166 | // Create tags for related models. |
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167 | foreach ($this->extractModelKeys($model->getAttributes()) as $relatedModelName => $relatedModelId) { |
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168 | // Flush cached items that are tagged through a relation |
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169 | // with this model. |
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170 | if ('delete' === $eventName) { |
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171 | $relatedEventName = 'detach'; |
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172 | } else { |
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173 | $relatedEventName = 'attach'; |
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174 | } |
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175 | $cacheTags[] = new Condition($relatedEventName, $modelName, $modelId, $relatedModelName, $relatedModelId); |
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176 | } |
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177 | } |
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178 | // Flush all stores with these tags |
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179 | $this->forgetWhen($cacheTags)->flush(); |
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180 | } |
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181 | |||
182 | /** |
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183 | * Get the observable event names. |
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184 | * |
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185 | * @return array |
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186 | */ |
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187 | protected function getObservableEvents(): array |
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188 | { |
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189 | return [ |
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190 | static::EVENT_ELOQUENT_CREATED, |
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191 | static::EVENT_ELOQUENT_UPDATED, |
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192 | static::EVENT_ELOQUENT_SAVED, |
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193 | static::EVENT_ELOQUENT_DELETED, |
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194 | static::EVENT_ELOQUENT_RESTORED, |
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195 | ]; |
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196 | } |
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197 | |||
198 | /** |
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199 | * extractModelKeys function. |
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200 | * |
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201 | * @param array $attributeNames |
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202 | * |
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203 | * @return array |
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204 | */ |
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205 | protected function extractModelKeys(array $attributeNames) |
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206 | { |
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207 | $modelKeys = []; |
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208 | foreach ($attributeNames as $attributeName => $value) { |
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209 | if (preg_match('/([^_]+)_id/', $attributeName, $matches)) { |
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210 | // This field is a key |
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211 | $modelKeys[strtolower($matches[1])] = $value; |
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212 | } |
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213 | } |
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214 | // Ensure our model keys are always in the same order. |
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215 | ksort($modelKeys); |
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216 | |||
217 | return $modelKeys; |
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218 | } |
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219 | |||
220 | /** |
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221 | * Returns a Condition instance that tags a cache to get invalidated |
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222 | * when a new Model of the specified class is created. |
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223 | * |
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224 | * @param string $modelClassName model class name |
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225 | * |
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226 | * @return Condition |
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227 | */ |
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228 | public function created(string $modelClassName): Condition |
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229 | { |
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230 | return new Condition( |
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231 | self::EVENT_ELOQUENT_CREATED, |
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232 | $modelClassName |
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233 | ); |
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234 | } |
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235 | |||
236 | /** |
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237 | * Returns a Condition instance that tags a cache to get invalidated |
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238 | * when the specified Model instance, or any Model of the specified class |
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239 | * is updated. |
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240 | * |
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241 | * @param mixed $model model instance or class name |
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242 | * @param ?int $modelId The Model id |
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243 | * |
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244 | * @return Condition |
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245 | */ |
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246 | public function updated($model, ?int $modelId = null): Condition |
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247 | { |
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248 | if (is_object($model) && is_subclass_of($model, Model::class)) { |
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249 | $modelClassName = get_class($model); |
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250 | $modelId = $model->getKey(); |
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251 | } else { |
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252 | $modelClassName = $model; |
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253 | } |
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254 | |||
255 | return new Condition( |
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256 | self::EVENT_ELOQUENT_UPDATED, |
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257 | $modelClassName, |
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258 | $modelId |
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259 | ); |
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260 | } |
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261 | |||
262 | /** |
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263 | * Returns a Condition instance that tags a cache to get invalidated |
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264 | * when the specified Model instance, or any Model of the specified class |
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265 | * is saved. |
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266 | * |
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267 | * @param mixed $model model instance or class name |
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268 | * @param ?int $modelId The Model id |
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269 | * |
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270 | * @return Condition |
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271 | */ |
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272 | public function saved($model, ?int $modelId = null): Condition |
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273 | { |
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274 | if (is_object($model) && is_subclass_of($model, Model::class)) { |
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275 | $modelClassName = get_class($model); |
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276 | $modelId = $model->getKey(); |
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277 | } else { |
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278 | $modelClassName = $model; |
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279 | } |
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280 | |||
281 | return new Condition( |
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282 | self::EVENT_ELOQUENT_SAVED, |
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283 | $modelClassName, |
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284 | $modelId |
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285 | ); |
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286 | } |
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287 | |||
288 | /** |
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289 | * Returns a Condition instance that tags a cache to get invalidated |
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290 | * when the specified Model instance, or any Model of the specified class |
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291 | * is deleted. |
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292 | * |
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293 | * @param mixed $model model instance or class name |
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294 | * @param ?int $modelId The Model id |
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295 | * |
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296 | * @return Condition |
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297 | */ |
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298 | public function deleted($model, ?int $modelId = null): Condition |
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299 | { |
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300 | if (is_object($model) && is_subclass_of($model, Model::class)) { |
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301 | $modelClassName = get_class($model); |
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302 | $modelId = $model->getKey(); |
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303 | } else { |
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304 | $modelClassName = $model; |
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305 | } |
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306 | |||
307 | return new Condition( |
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308 | self::EVENT_ELOQUENT_DELETED, |
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309 | $modelClassName, |
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310 | $modelId |
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311 | ); |
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312 | } |
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313 | |||
314 | /** |
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315 | * Returns a Condition instance that tags a cache to get invalidated |
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316 | * when the specified Model instance, or any Model of the specified class |
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317 | * is restored. |
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318 | * |
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319 | * @param mixed $model model instance or class name |
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320 | * @param ?int $modelId The Model id |
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321 | * |
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322 | * @return Condition |
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323 | */ |
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324 | public function restored($model, ?int $modelId = null): Condition |
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325 | { |
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326 | if (is_object($model) && is_subclass_of($model, Model::class)) { |
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327 | $modelClassName = get_class($model); |
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328 | $modelId = $model->getKey(); |
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329 | } else { |
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330 | $modelClassName = $model; |
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331 | } |
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332 | |||
333 | return new Condition( |
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334 | self::EVENT_ELOQUENT_RESTORED, |
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335 | $modelClassName, |
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336 | $modelId |
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337 | ); |
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338 | } |
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339 | |||
340 | /** |
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341 | * Returns a Condition instance that tags a cache to get invalidated when |
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342 | * a related Model of the specified class is attached. |
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343 | * |
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344 | * @param mixed $model model instance or class name |
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345 | * @param ?int $modelId the Model id, if $model is a class name |
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346 | * @param mixed $relatedModel the related Model instance or class name |
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347 | * @param ?int $relatedModelId the related Model id |
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348 | * |
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349 | * @return Condition |
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350 | */ |
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351 | public function relationAttached($model, ?int $modelId = null, $relatedModel = null, ?int $relatedModelId = null): Condition |
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352 | { |
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353 | if (is_object($model) && is_subclass_of($model, Model::class)) { |
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354 | $modelClassName = get_class($model); |
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355 | $modelId = $model->getKey(); |
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356 | } else { |
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357 | $modelClassName = $model; |
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358 | } |
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359 | if (is_object($relatedModel) && is_subclass_of($relatedModel, Model::class)) { |
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360 | $relatedModelClassName = get_class($relatedModel); |
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361 | $relatedModelId = $relatedModel->getKey(); |
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362 | } else { |
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363 | $relatedModelClassName = $relatedModel; |
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364 | } |
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365 | |||
366 | return new Condition( |
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367 | self::EVENT_ELOQUENT_ATTACHED, |
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368 | $modelClassName, |
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369 | $modelId, |
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370 | $relatedModelClassName, |
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371 | $relatedModelId |
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372 | ); |
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373 | } |
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374 | |||
375 | /** |
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376 | * Returns a Condition instance that tags a cache to get invalidated when |
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377 | * a related Model of the specified class is detached. |
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378 | * |
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379 | * @param mixed $model model instance or class name |
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380 | * @param ?int $modelId the Model id, if $model is a class name |
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381 | * @param mixed $relatedModel the related Model instance or class name |
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382 | * @param ?int $relatedModelId the related Model id |
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383 | * |
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384 | * @return Condition |
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385 | */ |
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386 | public function relationDetached($model, ?int $modelId = null, $relatedModel = null, ?int $relatedModelId = null): Condition |
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387 | { |
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388 | if (is_object($model) && is_subclass_of($model, Model::class)) { |
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389 | $modelClassName = get_class($model); |
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390 | $modelId = $model->getKey(); |
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391 | } else { |
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392 | $modelClassName = $model; |
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393 | } |
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394 | if (is_object($relatedModel) && is_subclass_of($relatedModel, Model::class)) { |
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395 | $relatedModelClassName = get_class($relatedModel); |
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396 | $relatedModelId = $relatedModel->getKey(); |
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397 | } else { |
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398 | $relatedModelClassName = $relatedModel; |
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399 | } |
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400 | |||
401 | return new Condition( |
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402 | self::EVENT_ELOQUENT_DETACHED, |
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403 | $modelClassName, |
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404 | $modelId, |
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405 | $relatedModelClassName, |
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406 | $relatedModelId |
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407 | ); |
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408 | } |
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409 | |||
410 | /** |
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411 | * Returns a Condition instance that tags a cache to get invalidated when |
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412 | * a related Model of the specified class is updated. |
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413 | * |
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414 | * @param mixed $model model instance or class name |
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415 | * @param ?int $modelId the Model id, if $model is a class name |
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416 | * @param mixed $relatedModel the related Model instance or class name |
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417 | * @param ?int $relatedModelId the related Model id |
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418 | * |
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419 | * @return Condition |
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420 | */ |
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421 | public function relationUpdated($model, ?int $modelId = null, $relatedModel = null, ?int $relatedModelId = null): Condition |
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422 | { |
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423 | if (is_object($model) && is_subclass_of($model, Model::class)) { |
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424 | $modelClassName = get_class($model); |
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425 | $modelId = $model->getKey(); |
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426 | } else { |
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427 | $modelClassName = $model; |
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428 | } |
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429 | if (is_object($relatedModel) && is_subclass_of($relatedModel, Model::class)) { |
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430 | $relatedModelClassName = get_class($relatedModel); |
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431 | $relatedModelId = $relatedModel->getKey(); |
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432 | } else { |
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433 | $relatedModelClassName = $relatedModel; |
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434 | } |
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435 | |||
436 | return new Condition( |
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437 | self::EVENT_ELOQUENT_UPDATED, |
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438 | $modelClassName, |
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439 | $modelId, |
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440 | $relatedModelClassName, |
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441 | $relatedModelId |
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442 | ); |
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443 | } |
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444 | |||
445 | /** |
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446 | * Return whether the specified class name is an Eloquent Model. |
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447 | * |
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448 | * @param mixed $value |
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449 | * |
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450 | * @return bool |
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451 | */ |
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452 | protected function isModel($value): bool |
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455 | } |
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456 | |||
457 | /** |
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458 | * Route function calls to a new DefinitionChain. |
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459 | * |
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460 | * @param string $name |
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461 | * @param array $arguments |
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462 | * |
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463 | * @throws BadFunctionCallException |
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464 | */ |
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465 | public function __call(string $name, array $arguments) |
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473 | } |
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474 | } |
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475 |
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..