这是 CakePHP 自动完成的可接受的 Ajax 操作吗? [英] Is this an acceptable Ajax action for a CakePHP auto complete?

问题描述

我对 CakePHP 比较陌生，想知道高级用户如何构建他们的 ajax 方法.这段代码的目的是为 jQuery 自动完成创建匹配产品的 JSON 列表.

I am relatively new to CakePHP and was wondering how advanced users structure their ajax methods. The purpose of code this is to create a JSON list of matched products for a jQuery autocomplete.

 function autocomplete() {
            $terms = $this->params['url']['q'];
            if (!$this->RequestHandler->isAjax()) {
                $products = $this->Product->find('list', array(
                    'conditions' => array(
                        'Product.name LIKE' => '%'.$terms.'%',
                    ),
                    'limit' => 7,
                    'order' => 'Product.name',
                    'contain' => false
                ));
                exit(json_encode($products));
            } else {
                $this->redirect();
            }
        }

只是抛出一个 exit() 感觉有点冒险，但话说回来，我肯定不需要运行任何视图吗?

It feels a bit ballsy to just throw an exit() but then again, I don't need to run any views do I surely?

推荐答案

以下是我过去所做的:

在config/routes.php中，添加以下内容:

Router::mapResources(array('restaurants', 'items'));
Router::parseExtensions('json');

在app/app_controller.php中:

function beforeFilter() {
    if ($this->isApiCall()) {
        Configure::write('debug', 0);
    }
}

function isApiCall() {
    return $this->RequestHandler->isAjax()
        || $this->RequestHandler->isXml()
        || $this->RequestHandler->prefers('json');
}

然后在app/views/items和app/views/restaurants中，我在每个文件夹下都有一个json文件夹，里面有对应的视图文件到控制器中的每个动作.使用 .json 扩展名发出请求.

Then in app/views/items and app/views/restaurants, I have a json folder under each with the corresponding view file to each action in the controller. Requests are made with the .json extension.

最后，我在 app/views/layouts/json/default.ctp 中有一个布局文件，内容如下:

Lastly, I have a layout file in app/views/layouts/json/default.ctp with the following:

<?php echo $content_for_layout; ?>

<小时>

例如，http://mydomain.com/items/view.json 映射到 app/views/items/json/view.ctp，其中包含:

---

For example, http://mydomain.com/items/view.json maps to app/views/items/json/view.ctp which contains:

<?php echo $javascript->object($item); ?>

$item 填充在 app/controllers/items_controller.php 文件中.

不确定这是否有助于增加混淆，但这就是我在 CakePHP 应用程序中使用 JSON 的方式.

Not sure if that helps for adds to the confusion, but that's how I've used JSON in my CakePHP apps.

更新:添加了布局信息.

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