Backbone fetch()发送text / html请求类型而不是json

时间:2013-09-25 21:05:20

标签: backbone.js yii marionette

我正在使用YiiBackboneBoilerplate。我想用这样的数据填充模型:

- 模型 -

define([
    'jquery', 
    'underscore', 
    'backbone'
    ], function($, _, Backbone) {

        var EvaluateModel = Backbone.Model.extend({

            urlRoot: 'evaluate/process',
            defaults: {
                title: '',
                state: 1
            }
        });

        return EvaluateModel;
    });

- 在我看来 -

    initialize:function() {
        var result = new Evaluate({id:this.id});
        result.fetch({
            success: function(result, response) {
                JSON.stringify(result.model);
            }
        });
    },

- Yii行动 -

public function actionProcess() {
    //I have tryed this
    echo json_encode('test');
    Yii::app()->end();

    //and this
    $this->sendResponse(200, CJSON::encode(array('title' => 'test')));
}

我正在获取textStatus:parsererror,从服务器返回的结果包含当前页面的html

此外,fetch()应该根据app.js中的初始设置发送POST请求类型,但类型是 GET

- app.js -

// initialize Http object to make backbone work with POST instead of GET
Http.initialize({type:'POST'});

可能出现什么问题?

2 个答案:

答案 0 :(得分:0)

我没有看到任何引用Http.initialize的文档。那是从哪里来的?由于您从服务器获取现有模型,因此即使模拟HTTP(http://backbonejs.org/#Sync-emulateHTTP),Backbone也会默认发出GET请求。

其次,可能发生的一件事是服务器端框架忽略了application/json请求内容类型类型,并且只会在您调用mypage.json URL时返回JSON(即它正在考虑只有扩展名。)

默认情况下,Backbond将使用内容类型/api/cars/12获取(例如)application/json以获取与汽车模型实例qith id 12相关的数据。因为它在内容类型中请求了JSON,所以期望返回JSON。如果您改为调用(例如)/api/cars/12.json,某些Web框架默认只返回其API返回JSON数据。或者,也许您的API无法返回JSON(即API不会自动执行,并且您自己没有配置它。)

答案 1 :(得分:0)

我正在从服务器发送json数据,如下所示:

protected function sendResponse($status = 200, $body = '', $contentType = 'application/json')
{
    // Set the status
    $statusHeader = 'HTTP/1.1 ' . $status . ' ' . $this->getStatusCodeMessage($status);
    header($statusHeader);
    // Set the content type
    header('Content-type: ' . $contentType);

    echo $body;
    Yii::app()->end();
}


 protected function getStatusCodeMessage($status)
    {
        $codes = array(
            100 => 'Continue',
            101 => 'Switching Protocols',
            200 => 'OK',
            201 => 'Created',
            202 => 'Accepted',
            203 => 'Non-Authoritative Information',
            204 => 'No Content',
            205 => 'Reset Content',
            206 => 'Partial Content',
            300 => 'Multiple Choices',
            301 => 'Moved Permanently',
            302 => 'Found',
            303 => 'See Other',
            304 => 'Not Modified',
            305 => 'Use Proxy',
            306 => '(Unused)',
            307 => 'Temporary Redirect',
            400 => 'Bad Request',
            401 => 'Unauthorized',
            402 => 'Payment Required',
            403 => 'Forbidden',
            404 => 'Not Found',
            405 => 'Method Not Allowed',
            406 => 'Not Acceptable',
            407 => 'Proxy Authentication Required',
            408 => 'Request Timeout',
            409 => 'Conflict',
            410 => 'Gone',
            411 => 'Length Required',
            412 => 'Precondition Failed',
            413 => 'Request Entity Too Large',
            414 => 'Request-URI Too Long',
            415 => 'Unsupported Media Type',
            416 => 'Requested Range Not Satisfiable',
            417 => 'Expectation Failed',
            500 => 'Internal Server Error',
            501 => 'Not Implemented',
            502 => 'Bad Gateway',
            503 => 'Service Unavailable',
            504 => 'Gateway Timeout',
            505 => 'HTTP Version Not Supported',
        );
        return (isset($codes[$status])) ? $codes[$status] : '';
    }