du22399 2009-11-15 14:49
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Rails在PHP中“respond_to”

Lately I have been trying out Rails, and I came to love the respond_to.

Is it possible to do something like this in PHP?, responding to different types of requests. So it is easy to implement an alternate way even if javascript is disabled.

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  • dpm91915 2009-11-15 17:13
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    You can dispatch on the filename suffix as Krule suggests, but I believe Rails determines which content type to choose by examining the value of the HTTP Accept header (see Content negotiation on Wikipedia). In pseudo-code

    $data = fetch_some_data();
    switch (get_preferred_response_type($_SERVER['HTTP_ACCEPT'])) {
        case 'text/html':
           render_html($data); break;
        case 'application/xml':
           render_xml($data);
        case 'application/json':
           render_json($data);
        // etc...
    }
    

    The get_preferred_response_type() function will have to parse the Accept header and return the client's preferred MIME type. Here is an example of such a function which should help you get started; otherwise there is a content negotiation library for PHP which does all the dirty work for you.

    Hope this helps!

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