app/assets/javascripts/events/new.js.erb
<%
environment.context_class.instance_eval do
include Rails.application.routes.url_helpers
end
%>
$(document).ready(function () {
eventManager.initEditor();
eventManager.initCropper();
initFileInput($('#image-input-container'));
$('.event-form').on('submit', onSubmit);
});
function onSubmit() {
var $croppedModalImage = $('#cropped-modal-image'),
form = $('.event-form')[0],
canvas = $croppedModalImage.cropper('getCroppedCanvas');
eventManager.sendFormWithImageBlob(form, canvas);
return false;
}