Question

我正在尝试使用CakePHP 2.1中的Ajax和jQuery获取验证错误，以获取联系表单。在名称字段模糊时，调用js函数：

$(document).ready(function(){

$('#name').blur(function(){
    $.post(
        '/Cake_ajax/Contacts/validate_form',
        { field: $(this).attr('id'), value: $(this).val() },
        handleNameValidation
    );
});

function handleNameValidation(error){
    if(error.length > 0){
        if($('#name-notEmpty').length == 0){
            $('#name').after($('<div id="name-notEmpty" class="error-message">' + error + '</div>'));
        }
    }else{
        $('#name-notEmpty').remove();
    }
}
});

javascript调用我的控制器中的validate_form函数：

public function validate_form(){
        if($this->RequestHandler->isAjax()){
            $this->request->data['Contact'][$this->request->params['form']['field']] = $this->request->params['form']['value'];
            $this->Contact->set($this->request->data);
            if($this->Contact->validates()){
                $this->autorender = FALSE; // don't render a view
            }else{
                $error = $this->validateErrors($this->Contact);
                $this->set('error', $error[$this->request->params['form']['field']]);
            }
        }
    }

在我看来，在调用错误时我遇到了一些错误：

Undefined index: form [APP\Controller\ContactsController.php
Undefined index: form [APP\Controller\ContactsController.php

我的智慧结束了，而且我是CakePHP的新手。任何帮助将不胜感激。

Answer 1

尝试使用$this->request->params['field']代替$this->request->params['form']['field']。

或者在您检查isAjax()后，尝试在$this->request->params上执行var_dump。从您收到的错误中，$this->request->params中不存在表单索引。

Answer 2

在你的控制器中你应该有类似下面的内容。 Cake 2.0取代了RequestHandlerComponent和Controller中的许多功能。它还将所有地方的$ this-＆gt; params数组和旧的$ this-＆gt;数据替换为$ this-＆gt; request-＆gt;数据，就像那样。您可以访问migration guide。

    public function validate_form(){
        if($this->RequestHandler->isAjax()){
           $this->request->data['Contact'][$this->request['form']['field']] = $this->request['form']['value'];
           $this->Contact->set($this->request->data);
           if($this->Contact->validates()){
              $this->autorender = FALSE; // don't render a view
           }else{
             $error = $this->validateErrors($this->Contact);
             // didn't validate logic
             $this->set('error',$this->Contact->validationErrors[$this->request['data']['field']][0]);
          }
       }
    }

Answer 3

如果你想模拟使用标准表格和Cake FormHelper时完成的POST，你也可以简单地命名发布的参数，就像FormHelper命名输入字段一样。

$j.post(
    '/Cake_ajax/Contacts/validate_form',
    { "data[Contact][" + $(this).attr('id') + "]": $(this).val() },
    handleNameValidation
);

这会自动填充$this->request->data['Contact']['name']，你可以只评论这一行：

//$this->request->data['Contact'][$this->request->params['form']['field']] = $this->request->params['form']['value'];

CakePHP 2.1 Ajax验证错误

3 个答案: