authorization header

[mple...@gmail.com]

Hello,

How do i add a custom authorization header in the amplify.request?

thx

[Scott González]

You can use the beforeSend callback from jQuery.ajax:

amplify.request.define( "foo", "ajax", {
    url: "path/to/resource",
    beforeSend: function( xhr ) {
        xhr.setRequestHeader( "X-Amplify-Request", "bar" );
    }
});

See http://api.jquery.com/jQuery.ajax for a full set of options that work with amplify.request's ajax request type.

Alternatively, you can hook into the request.before.ajax message, though you'd need to filter based on the resource id:

amplify.subscribe( "request.before.ajax", function( resource, settings, ajaxSettings, xhr ) {
    if ( resource.resourceId === "foo" ) {
        xhr.setRequestHeader( "X-Amplify-Request", "bar" );
    }
});

[mandar katre]

Hi Scott,

I used the beforeSend callback to set the request headers, but the decoder was not firing, so I had to return true to make it fire.

beforeSend: function (xhr) {

                     xhr.setRequestHeader("X-Authorize-Request", "OAuthToken");

                     // return true to make decoder fire

                     return true;

                 },

But in my decoder, xhr.getResponseHeader("X-Authorize-Request") returns null, so how do I modify the header response header in the decoder?

this.decoder = function (data, status, xhr, success, error) {            

            if (status === "success") { 

               var foo = xhr.getResponseHeader("X-Authorize-Request");

               var all = xhr.getAllResponseHeaders();               

                success(data, xhr);                

            } else if (status === "fail" || status === "error") {

                error(status, xhr);

                console.log(xhr.responseText);

            } else {

                error(status, xhr);

                console.log(xhr.responseText);

            }

        };

[Scott González]

Response headers come from the server. You can't change what they are after the response has been received.

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[pratham tandon]

Hi,

I am trying to attach csrf token to all my outgoing ajax requests. If I do it by defining a "beforeSend" on each amplify request, everything works fine.

However, to avoid code repetition, I tried to listen to "request.before.ajax" and call the setRequestHeader there. For some reason, it won't attach to the header. Some digging into amplify and jquery code revealed that the "state" variable is set to 1 when it tries to add the value to request headers in jquery. I tried to find what this means but there is not much help online. This is my code if it can be of any help:

            amplify.subscribe("request.before.ajax", function (resource, settings, ajaxSettings, xhr) {

                // Skip for non-service ajax calls (E.g. while loading html templates).

                if (ajaxSettings.url.indexOf("/api") == -1) return;

                require(["config", "logger"], function (config, logger) {

                    // Append the CSRF token on all POSTs.

                    if (ajaxSettings.type == "POST") {

                        var

                            csrfToken = config.csrfToken,

                            csrfTokenValue = $('input[name="' + config.requestVerificationToken + '"]').val();

                        xhr.setRequestHeader(csrfToken, csrfTokenValue);

                    }

                    logger.url = ajaxSettings.url;

                    logger.data = ajaxSettings.data;

                });

            });

Can you pls suggest where I'm going wrong ?

Thanks!

Pratham 

[Doug Neiner]

Hi Pratham,

I believe the RequireJS call you are making inside the subscription is the problem. The pub/sub for “request.before.ajax” is synchronous, so the call has already started to execute before you set the header. Try moving your `require` call around the amplify.subscribe call. That way the require will only happen once on boot, and the synchronous subscription should work as you expect.

Doug

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