使用HTTP PUT发送JSON与jQuery和Rails 3 [英] Using HTTP PUT to send JSON with Jquery and Rails 3

问题描述

HTTP PUT并不完全是跨浏览器，滑轨（我用Rails 3）支持使用POST并通过 _method 查询参数。这是伟大的，但它似乎并没有发送JSON何时工作。

HTTP PUT isn't entirely cross browser so Rails (I'm using Rails 3) supports using POST and passing the _method query param. This is great, but it doesn't seem to work when sending JSON.

示例：

$.ajax({
    url: window.location.pathname,
    type: 'POST',
    contentType: 'application/json',
    data: JSON.stringify({_method:'PUT', page:{my_data: 1}),
    dataType: 'json'
});

在Rails的看到这一点，不承认_method'覆盖，因为它是通过JSON格式（也许是转换后的？）。 Rails的返回一个错误，没有路由匹配...说，它不能找到路线（到资源），我想是因为它不符合REST更新= HTTP PUT动词，我甚至试过追加这网址：<？code> _方法= PUT ，但得到了同样的结果。

When Rails sees this, it doesn't recognize the '_method' override because it's passed in the JSON format (perhaps that conversion is later?). Rails returns an error "No route matches ..." saying it can't find the route (to the resource), I assume because it doesn't match the REST update=HTTP PUT verb, I've even tried appending this to the URL: ?_method=PUT but got the same result.

这的的唯一的事情确实的似乎工作是设置一个HTTP标头：

The only thing that does seem to work is setting an HTTP header:

$.ajax({
    url: window.location.pathname,
    type: 'POST',
    contentType: 'application/json',
    data: JSON.stringify({my_data: 1}),
    dataType: 'json',
    beforeSend: function(xhr){
        xhr.setRequestHeader("X-Http-Method-Override","put");
    }
});

是设置HTTP头覆盖的最好方法是什么？

推荐答案

AJAX支持 PUT 动词直接何必与困扰 _method 和自定义HTTP标头：

AJAX supports the PUT verb directly so why bothering with _method and custom HTTP headers:

$.ajax({
    url: window.location.pathname,
    type: 'PUT',
    contentType: 'application/json',
    data: JSON.stringify({ page: { my_data: 1 }),
    dataType: 'json'
});

另外，还要确保你的尊重同源策略或jQuery的可能会尝试使用JSONP仅<$其中工程C $ C> GET 动词。

Also make sure you are respecting the same origin policy or jquery might try to use JSONP which works only with GET verbs.

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