Question

我正在使用cakephp 2.1.3，我有一张桌子配料和一张表IngredientAliases 当我选择一种IngredientAlias时，我想在我的页面索引中选择一种成分，我想看看IngredientAlias和一些成分的成分但我不知道我是否必须对我的控制器进行两次查询，或者只是设置ingredients_id，而id和cakephp会自动检索我的数据。现在我在我的控制器中进行了两次查询，但我不知道这是否是最好的方法

$this->set('ingredient', $this->Ingredient->read());            $this->set('ingredient_alias',$this->Ingredient->IngredientAlias->read());

这是我的表格：

class Ingredient extends AppModel {
    public $name = 'Ingredient';
    public $useTable = 'ingredients';
    public $belongsTo = 'User';

    public $hasMany = array (
        'IngredientAlias' => array (
            'className'     => 'IngredientAlias',
            'foreignKey'    => 'ingredient_id'
        )
    );
}

class IngredientAlias extends AppModel {
    public $name = 'IngredientAlias';
    public $useTable = 'ingredient_aliases';
    public $belongsTo = array(
        'Ingredient' => array(
            'className'    => 'Ingredient',
            'foreignKey'   => 'ingredient_id'
        )
    );
}

这是我的IngredientsController（我已经将putt别名的路由更改为我的参数并且它正在工作）

public function edit ($alias) {
        $ing = $this->Ingredient->IngredientAlias->find('first', array(
                    'conditions' => array('IngredientAlias.alias' => $alias)));
        $this->Ingredient->IngredientAlias->id= $ing['IngredientAlias']['id'];
        $this->Ingredient->IngredientAlias->set('ingredient_id',$ing['IngredientAlias']['ingredient_id']);
        $this->Ingredient->id= $ing['IngredientAlias']['ingredient_id'];
        if (!$this->Ingredient->IngredientAlias->exists()) {
                throw new NotFoundException ('Nessuna corrispondenza trovata per questo ingrediente');
            }
            if (!$alias) {
                $this->set('flash_element','error');
                $this->Session->setFlash ('Ingrediente non valido');
            }
            $this->Ingredient->recursive = 2;
            $this->set('ingredient', $this->Ingredient->read());
            $this->set('ingredient_alias',$this->Ingredient->IngredientAlias->read());
    }

Answer 1

根据您描述的关系以及如果您致电ingredient_id表格中有ingredient_aliases密钥：

$this->Ingredient->find('first', array('conditions' => array('Ingredient.id' => $id)));

您将获得$ id指定的成分记录，其中包含与所有相关的IngredientAlias记录，其数组结构类似于以下内容：

Array =>
    [Ingredient] => Array
                        [id] => 3
                        [other_data_from_DB] =>
                        .....
    [IngredientAlias] => Array => 
                         [0] => Array =>
                                [id] => 1
                                [ingredient_id] => 3
                                [other_data_from_DB] =>
                                ....
                         [1] => Array =>
                                [id] => 2
                                [ingredient_id] => 3
                                [other_data_from_DB] =>
                                ....
                         [2] => Array =>
                                [id] => 3
                                [ingredient_id] => 3
                                [other_data_from_DB] =>
                                ....

由于hasMany关系，IngredientAlias数组子结构已编入索引。如果您没有看到相关的IngredientAlias记录，请检查your Model's recursive property：

debug($this->Ingredient->recursive);

如果等于-1，则仅获取成分模型数据。查看我提供的链接中其他递归值的作用。

如果你想走另一条路，你应该通过IngredientAlias模型：

$this->IngredientAlias->find('first', array(CONDITIONS));

将在CONDITIONS IngredientAlias记录中提供其连接的成分记录。由于IngredientAlias belongsTo Ingredient关系，成分记录只有一个。

cakephp关系属于

1 个答案: