javascript Cake PHP 3.0 中的 Jquery ajax 调用
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Jquery ajax call in Cake PHP 3.0
提问by L_air
Hi, I'm trying to make a ajax request to the view A from the controller B like this :
嗨，我正在尝试从控制器 B 向视图 A 发出 ajax 请求，如下所示：
In the view A :
在视图 A 中：
var tab = new Array();
function updateResult(){
$.ajax({
type:"POST",
url:"<?php echo Router::url(array('controller'=>'B','action'=>'viewresult'));?>",
dataType: 'text',
async:false,
success: function(tab){
alert('success');
},
error: function (tab) {
alert('error');
}
});
}
In the controller B:
在控制器 B 中：
public function viewresult()
{
echo 'SUCCESS';
}
The problem is that in the 'response' of ajax, I've 'SUCCESS' but also the entire view A, I don't understand why... I want only 'SUCCESS'...
问题是在ajax的'响应'中，我有'SUCCESS'还有整个视图A，我不明白为什么......我只想要'SUCCESS'......
Thanks in advance !
提前致谢 ！
采纳答案by marian0
The easiest way to achieve it is adding die()at the end of your function so it prevents to load whole layout:
实现它的最简单方法是die()在函数的末尾添加，这样可以防止加载整个布局：
public function viewresult()
{
echo 'SUCCESS';
die;
}
OR
或者
public function viewresult()
{
die('SUCCESS');
}
But more conventional way is using JSONView. Your action should look as follows:
但更传统的方法是使用JSONView。您的操作应如下所示：
public function viewresult()
{
$this->set('text', 'SUCCESS');
$this->set('_serialize', ['text']);
}
You also have to load RequestHandlercomponent in initialize()method in your controller:
您还必须在控制器的方法中加载RequestHandler组件initialize()：
public function initialize()
{
parent::initialize();
$this->loadComponent('RequestHandler');
}
You need to set allowed extensions for all routes connected later in routes.php:
您需要为稍后连接的所有路由设置允许的扩展routes.php：
Router::extensions('json', 'xml');
Now you can access your action adding extension .jsonat the end of it's URL, so you need to modify ajax call url:
现在您可以.json在其 URL 的末尾访问您的操作添加扩展名，因此您需要修改 ajax 调用 url：
url:"<?php echo Router::url(array('controller'=>'Main','action'=>'viewresult', '_ext' => 'json'));?>"
That's all, but keep in mind that this solution force you to handle JSON array in response. In this example output will be looks as follows:
这就是全部，但请记住，此解决方案会强制您处理 JSON 数组作为响应。在此示例中，输出将如下所示：
{"text": "SUCCESS"}
回答by Abhishek
Detect if its ajax as per following code in cakephp way :
按照cakephp方式中的以下代码检测其ajax是否：
if($this->request->is('Ajax')) //Ajax Detection
{
$this->autoRender = false; // Set Render False
$this->response->body('Success');
return $this->response;
}
Check here for more detectors - http://book.cakephp.org/3.0/en/controllers/request-response.html#Cake\Network\Request::addDetector
在此处查看更多检测器 - http://book.cakephp.org/3.0/en/controllers/request-response.html#Cake\Network\Request::addDetector
You can also use $this->Url->build instead of including Router for creating links in view.
您还可以使用 $this->Url->build 而不是包含 Router 来在视图中创建链接。
echo $this->Url->build(['action'=>'index']);
