在model :: beforeSave中添加关联数据

Question

我试图在cakePHP beforeSave()期间添加相关数据但看起来像cakePHP忽略它.

<?php
App::uses("AppModel", "Model");

class Recipe extends AppModel {
    public $hasMany = array('Ingredient');

    public function beforeSave($options=array()) {
        if(!isset($this->data["Ingredient"])) {
            Debugger::log("data[Ingredient] didn't exist! adding some ingredients...");
            $this->data["Ingredient"] = array(
                array(
                    'Ingredient' => array(
                        'name' => 'Gluten Free Flour',
                        'amount' => '12 cups'
                    )
                ),
                array(
                    'Ingredient' => array(
                        'name' => 'Sugar',
                        'amount' => '50 cups'
                    )
                ),
                array(
                    'Ingredient' => array(
                        'name' => 'A shoe',
                        'amount' => 'Just one'
                    )
                ),
            );
        }
        Debugger::log("Saving Data: ");
        Debugger::log($this->data, 7, 10);

        return true;
    }
}

在我,RecipesController我有这个:

public function test_save() {
    //Test saving With the ingredients in the recipe
    Debugger::log("Saving w/ ingredients");
    Debugger::log($this->Recipe->saveAssociated(array(
        'Recipe' => array(
            'name' => 'Test Recipe 1'
        ),  
        'Ingredient' => array(
            array(
                'name' => 'Test Ingredient 1 for Test Recipe 1',
                'amount' => 'a few'
            ),  
            array(
                'name' => 'Test Ingredient 2 for Test Recipe 1',
                'amount' => 'a lot'
            )   
        )   
    )));

    Debugger::log("Saving w/o ingredients");
    Debugger::log($this->Recipe->saveAssociated(array(
        'Recipe' => array(
            'name' => 'Test Recipe 2'
        )   
    )));
}

使用成分保存工作,但没有成分的保存不会,beforeSave返回之前Recipe-> data中的数据是这样的:

array(
    'Recipe' => array(
        'name' => 'Test Recipe 1'
    ),
    'Ingredient' => array(
        (int) 0 => array(
            'Ingredient' => array(
                'name' => 'Test Ingredient 1 for Test Recipe 1',
                'amount' => 'a few'
            )
        ),
        (int) 1 => array(
            'Ingredient' => array(
                'name' => 'Test Ingredient 2 for Test Recipe 1',
                'amount' => 'a lot'
            )
        )
    )
)

当在保存之前添加成分时:

array(
    'Recipe' => array(
        'name' => 'Test Recipe 1'
    ),
    'Ingredient' => array(
        (int) 0 => array(
            'Ingredient' => array(
                'name' => 'Gluten Free Flour',
                'amount' => '12 cups'
            )
        ),
        (int) 1 => array(
            'Ingredient' => array(
                'name' => 'Sugar',
                'amount' => '50 cups'
            )
        ),
        (int) 2 => array(
            'Ingredient' => array(
                'name' => 'A shoe',
                'amount' => 'Just one'
            )
        )
    )
)

在我调用save方法之前数据在数组中时,只有当我尝试在beforeSave中添加关联数据时,它才能正常工作.

Answer 1

从文档:

确保beforeSave()返回true,否则您的保存将失败.

http://book.cakephp.org/2.0/en/models/callback-methods.html#beforesave

编辑:我测试了你的代码而你是对的,添加的相关数据beforeSave()被忽略了.发生这种情况是因为您无法在模型中添加或修改相关数据beforeSave().这意味着,在您的食谱中beforeSave(),您既不能添加配料,也不能修改之前添加到配方中的配料.

在您的食谱中,beforeSave()您只能修改配方数据.

这是一个错误吗？根据Mark Story(CakePHP的创建者)的说法,它不是:

它的一个功能,因为目前saveAll 只允许你使用beforeSave修改即将保存的记录,而不是完整的数据集.我个人认为不应该改变,但它可以讨论的东西.

这个陈述是关于,saveAll()但重要的部分是他所说的beforeSave().检查完整的主题:https://github.com/cakephp/cakephp/issues/1765