使用CakePHP 2.x进行HABTM表单验证 [英] HABTM form validation with CakePHP 2.x

问题描述

这是此 CakePHP中的HABTM表单验证问题的更新，因为我得到相同的问题在我的cakephp 2.7（最后cakephp 2.x现在与php 5.3支持在2016年），并找不到一个好的方法来做。

Here is an update for this HABTM form validation in CakePHP question, as I get the same problem on my cakephp 2.7 (last cakephp 2.x for now with php 5.3 support at the date of 2016) and can't find a good way to do it.

问题：

我有一个HABTM关系，例如： Post<标签。这工作与Cakephp生成的多个复选框选择。我想为每个帖子至少有一个标签。

I have a HABTM relation like : Post <-> Tag. This work with the multiple checkbox selection generated by Cakephp. I want to have at least one Tag for every Post.

我正在寻找最干净的方法来做到这一点。

I'm looking for the cleanest way to do this.

推荐答案

这里是我认为是最好的现在。它使用cakephp 3.x行为进行HABTM验证。

Here are what I think is the best for now. It use the cakephp 3.x behaviour for HABTM validation.

我选择只在模型中工作，使用最通用的代码。

I choose to only work in model, with the most generic code.

在 AppModel.php 中，设置 beforeValidate（）和 afterValidate（）

class AppModel extends Model {
   /** @var array set the behaviour to `Containable` */
 public $actsAs = array('Containable');

   /**
    * copy the HABTM post value in the data validation scope
    * from data[distantModel][distantModel] to data[model][distantModel]
    * @return bool true
    */
 public function beforeValidate($options = array()){
   foreach (array_keys($this->hasAndBelongsToMany) as $model){
     if(isset($this->data[$model][$model]))
       $this->data[$this->name][$model] = $this->data[$model][$model];
   }

   return true;
 }

   /**
    * delete the HABTM value of the data validation scope (undo beforeValidate())
    * and add the error returned by main model in the distant HABTM model scope
    * @return bool true
    */
 public function afterValidate($options = array()){
   foreach (array_keys($this->hasAndBelongsToMany) as $model){
     unset($this->data[$this->name][$model]);
     if(isset($this->validationErrors[$model]))
       $this->$model->validationErrors[$model] = $this->validationErrors[$model];
   }

   return true;
 }
}

之后，您可以在模型中使用验证像这样：

After this, you can use your validation in you model like this :

class Post extends AppModel {

    public $validate = array(
        // [...]
        'Tag' => array(
              // here we ask for min 1 tag
            'rule' => array('multiple', array('min' => 1)),
            'required' => true,
            'message' => 'Please select at least one Tag for this Post.'
            )
        );

        /** @var array many Post belong to many Tag */
    public $hasAndBelongsToMany = array(
        'Tag' => array(
            // [...]
            )
        );
}

---

使用：

• CakePHP中的Painless HABTM验证 by @jesal


• 在CakePHP中进行HABTM表单验证


• CakePHP 2.x保存和验证HABTM关系示例

• Painless HABTM Validation in CakePHP by @jesal
• HABTM form validation in CakePHP
• CakePHP 2.x Saving and validating a HABTM relation example

这篇关于使用CakePHP 2.x进行HABTM表单验证的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！