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<?php |
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namespace andmemasin\myabstract; |
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use Yii; |
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/** |
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* This is a base class for models that bind/assign child models to |
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* parent models. Typically named as ParentHasChild pattern |
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* @property bool $isAlreadyAssigned whether there is already a model with this parent-child relation |
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*/ |
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class MyAssignModel extends MyActiveRecord |
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{ |
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/* @var $parentIdColumnName string Column name containing parent id FK */ |
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public $parentIdColumnName; |
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/* @var $childIdColumnName string Column name containing child id FK */ |
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public $childIdColumnName; |
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public function rules() |
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{ |
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return array_merge(parent::rules(), [ |
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[[$this->parentIdColumnName, $this->childIdColumnName], 'required'], |
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[$this->childIdColumnName, function($attribute) { |
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if ($this->isAlreadyAssigned) { |
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$this->addError($attribute, Yii::t('app', "Can only be used once!")); |
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} |
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}], |
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]); |
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} |
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/** |
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* @param MyActiveRecord $parent |
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* @param MyActiveRecord $child |
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* @return void |
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*/ |
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public function assign($parent, $child) |
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{ |
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$this->{$this->parentIdColumnName} = $parent->primaryKey; |
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$this->{$this->childIdColumnName} = $child->primaryKey; |
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return null; |
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} |
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/** |
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* @return bool |
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*/ |
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public function getIsAlreadyAssigned() { |
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if ($this->isNewRecord) { |
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$model = static::find() |
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->andWhere([$this->parentIdColumnName => $this->{$this->parentIdColumnName}]) |
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->andWhere([$this->childIdColumnName => $this->{$this->childIdColumnName}]) |
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->all(); |
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return !empty($model); |
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} |
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return false; |
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} |
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} |
TonisOrmisson /
yii2-myabstract
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