set content-type to utf-8 with angularjs $http

I'm uploading a form with files, text etc to the appengine blobstore:

$http({
    method: 'POST',
    url: the_url,
    transformRequest: formDataObject,
    data: event,
    headers: {'Content-Type': undefined}
})

The request sends successfully with the follwing header:

Content-Type:multipart/form-data; boundary=----WebKitFormBoundaryYeRxOO7y3qHNWd83

When I try setting the content-type to "multipart/form-data;charset=UTF-8" I lose the boundary and get an error in the response: Bad content type. Please use multipart.

What is the correct way to add the UTF-8 charset?

set content-type to utf-8 with angularjs $http

3 Answers