How to include the CSRF token in the headers in Dropzone upload request?

Question

I am working on a single page application and I am using Laravel 5 for the web service.

All forms are submitted asynchronously and I use a beforeSend on them to atta

Answer 1

You can add csrf token for every jquery ajax request within your application with these code.

$.ajaxSetup({
    headers: {
        'X-CSRF-Token': $('meta[name="_token"]').attr('content')
    }
});

Answer 2

For those of you that came here and are looking for the Rails solution, add the header with the following code:

  headers: {
    'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
  },

The same applies for Laravel 6.x according to the docs: https://laravel.com/docs/6.x/csrf#csrf-x-csrf-token

$.ajaxSetup({
    headers: {
        'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
    }
});

Answer 3

I believe the best way to handle this is to set it by default for all ajax posts (with jQuery) as according to the Django docs

https://docs.djangoproject.com/en/1.8/ref/csrf/#ajax

function getCookie(name) {
    var cookieValue = null;
    if (document.cookie && document.cookie != '') {
        var cookies = document.cookie.split(';');
        for (var i = 0; i < cookies.length; i++) {
            var cookie = jQuery.trim(cookies[i]);
            // Does this cookie string begin with the name we want?
            if (cookie.substring(0, name.length + 1) == (name + '=')) {
                cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                break;
            }
        }
    }
    return cookieValue;
}

var csrftoken = getCookie('csrftoken');

function csrfSafeMethod(method) {
    // these HTTP methods do not require CSRF protection
    return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
}

function sameOrigin(url) {
    // test that a given url is a same-origin URL
    // url could be relative or scheme relative or absolute
    var host = document.location.host; // host + port
    var protocol = document.location.protocol;
    var sr_origin = '//' + host;
    var origin = protocol + sr_origin;
    // Allow absolute or scheme relative URLs to same origin
    return (url == origin || url.slice(0, origin.length + 1) == origin + '/') ||
        (url == sr_origin || url.slice(0, sr_origin.length + 1) == sr_origin + '/') ||
        // or any other URL that isn't scheme relative or absolute i.e relative.
        !(/^(\/\/|http:|https:).*/.test(url));
}

$.ajaxSetup({
    beforeSend: function(xhr, settings) {
        if (!csrfSafeMethod(settings.type) && sameOrigin(settings.url)) {
            // Send the token to same-origin, relative URLs only.
            // Send the token only if the method warrants CSRF protection
            // Using the CSRFToken value acquired earlier
            xhr.setRequestHeader("X-CSRFToken", csrftoken);
        }
    }
});

In your example, you have a typo when adding it to the Dropzone.js ajax post.

'X-CSRF-Token'

should be

'X-CSRFToken'