JayData oData request with custom headers - wcf

Question

I need to send custom headers to my wcf oData Service but with the following function the headers dont get modified.
entities.onReady(function () {
entities.prepareRequest = function(r) {
r[0].headers['APIKey'] = 'ABC';
};
entities.DataServiceClient.toArray(function (cli) {
cli.forEach(function (c) {
console.log(c.Name)
});
});
});
headers are not affected. any clue?
thanks!

Answer 1

It seems that the marked answer is incorrect. I was suffering from a similar issue, but got it working without changing datajs.
My issue was that I was doing a cross domain (CORS) request, but didn't explicitly allow the headers. After I added the correct CORS header to the webservice, it worked.

Answer 2

EDIT
On second thought, it seems like there is still something broken in JayData for MERGE requests.
This is NOT CORS and has nothing to do with it!
see JayData oData request with custom headers - ROUND 2
the bellow "hack" works, but the above question should take this problem to a new level.
----------
Old answer
Nevermind I found a solution.
It seems like prepareRequest is broken in JayData 1.3.2 (ODataProvider).
As a hack, I added an extraHeaders object in the providerConfiguration (oDataProvider.js):
this.providerConfiguration = $data.typeSystem.extend({
//Leave content unchanged and add the following:
extraHeaders: {}
}, cfg);
then at line 865 modify requestData like this:
var requestData = [
{
requestUri: this.providerConfiguration.oDataServiceHost + sql.queryText,
method: sql.method,
data: sql.postData,
headers: _.extend({
MaxDataServiceVersion: this.providerConfiguration.maxDataServiceVersion
},this.providerConfiguration.extraHeaders)
},
NOTE: Iam using lodash for conveniance, any js extend should do the trick.
then you just create your client like this:
var entities = new Entities.MyEntities({
name: 'oData',
oDataServiceHost: 'http://myhost.com/DataService.svc',
maxDataServiceVersion: "2.0",
//enableJSONP: true,
extraHeaders: {apikey:'f05d1c1e-b1b9-5a2d-2f44-da811bd50bd5', Accept:'application/json;odata=verbose'}
}
);