63 lines
1.8 KiB
PHP
63 lines
1.8 KiB
PHP
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<?php
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namespace Rails\ActiveRecord\Base\Methods;
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use Rails\ActiveRecord\Relation;
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trait ScopingMethods
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{
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/**
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* Checks if scope exists. If it does, executes it and
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* returns the relation; otherwise, returns false.
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*/
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static public function scope($name, array $params)
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{
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$cn = self::cn();
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self::$preventInit = true;
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$scopes = (new $cn())->scopes();
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if (isset($scopes[$name])) {
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$lambda = $scopes[$name];
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$relation = new Relation($cn, static::tableName());
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$lambda = $lambda->bindTo($relation);
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call_user_func_array($lambda, $params);
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return $relation;
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} else
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return false;
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}
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/**
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* Defines scopes.
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*
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* Eg:
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*
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class Book extends ActiveRecord\Base
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{
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static protected function scopes()
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{
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return [
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'fantasy' => function() {
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$this->where(['genre' => 'fantasy']);
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},
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'available' => function() {
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$this->where(['status' => 'available']);
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},
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'author' => function($author_name, $limit = 0) {
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$this->where('author_name = ?', $author_name);
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if ($limit)
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$this->limit($limit);
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}
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];
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}
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}
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* The anonymous function is binded to an ActiveRecord\Relation object.
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*
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* Not supporting default scope for now.
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* Not supporting static methods as scopes, as they couldn't
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* be called from a model instance.
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*/
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protected function scopes()
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{
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return [];
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}
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}
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