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<?php |
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namespace Suricate\Traits; |
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use Suricate\DBObject; |
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trait DBObjectRelations |
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{ |
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protected $relations = []; |
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protected $relationValues = []; |
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protected $loadedRelations = []; |
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/** |
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* Get relation from its name |
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* |
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* @param string $name |
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*/ |
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protected function getRelation($name) |
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{ |
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if (isset($this->relationValues[$name]) && $this->isRelationLoaded($name)) { |
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return $this->relationValues[$name]; |
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} |
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if (!$this->isRelationLoaded($name)) { |
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$this->loadRelation($name); |
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$this->markRelationAsLoaded($name); |
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} |
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if (isset($this->relationValues[$name])) { |
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return $this->relationValues[$name]; |
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} |
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return null; |
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} |
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/** |
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* Check if variable is predefined relation |
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* @param string $name variable name |
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* @return boolean |
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*/ |
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protected function isRelation($name) |
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{ |
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return isset($this->relations[$name]); |
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} |
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/** |
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* Define object relations |
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* |
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* @return DBObject |
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*/ |
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protected function setRelations() |
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{ |
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$this->relations = []; |
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return $this; |
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} |
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/** |
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* Mark a relation as loaded |
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* @param string $name varialbe name |
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* @return void |
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*/ |
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protected function markRelationAsLoaded($name) |
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{ |
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if ($this->isRelation($name)) { |
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$this->loadedRelations[$name] = true; |
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} |
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} |
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/** |
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* Check if a relation already have been loaded |
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* @param string $name Variable name |
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* @return boolean |
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*/ |
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protected function isRelationLoaded($name) |
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{ |
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return isset($this->loadedRelations[$name]); |
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} |
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/** |
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* Load realation according to relation type |
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* |
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* @param string $name |
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* @return void |
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*/ |
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protected function loadRelation($name) |
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{ |
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if ($this->isRelation($name)) { |
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switch ($this->relations[$name]['type']) { |
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case DBObject::RELATION_ONE_ONE: |
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$this->loadRelationOneOne($name); |
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return; |
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case DBObject::RELATION_ONE_MANY: |
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$this->loadRelationOneMany($name); |
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return; |
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case DBObject::RELATION_MANY_MANY: |
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$this->loadRelationManyMany($name); |
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return; |
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} |
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} |
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} |
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/** |
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* Load one to one relationship |
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* |
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* @param string $name |
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* @return void |
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*/ |
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private function loadRelationOneOne($name) |
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{ |
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$target = $this->relations[$name]['target']; |
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$source = $this->relations[$name]['source']; |
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$this->relationValues[$name] = new $target(); |
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$this->relationValues[$name]->load($this->$source); |
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} |
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/** |
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* Load one to many relationship |
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* |
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* @param string $name |
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* @return void |
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*/ |
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private function loadRelationOneMany($name) |
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{ |
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$target = $this->relations[$name]['target']; |
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$parentId = $this->{$this->relations[$name]['source']}; |
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$parentIdField = isset($this->relations[$name]['target_field']) ? $this->relations[$name]['target_field'] : null; |
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$validate = dataGet($this->relations[$name], 'validate', null); |
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$this->relationValues[$name] = $target::loadForParentId($parentId, $parentIdField, $validate); |
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} |
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/** |
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* Load many to many relationship |
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* |
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* @param string $name |
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* @return void |
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*/ |
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private function loadRelationManyMany($name) |
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{ |
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$pivot = $this->relations[$name]['pivot']; |
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$sourceType = $this->relations[$name]['source_type']; |
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$target = dataGet($this->relations[$name], 'target'); |
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$validate = dataGet($this->relations[$name], 'validate', null); |
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$this->relationValues[$name] = $pivot::loadFor($sourceType, $this->{$this->relations[$name]['source']}, $target, $validate); |
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} |
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} |
suricate-php /
framework
