dropzone example when use normal form submit

post_dropzone.js

//= require dropzone

$(document).on("ready", function(){
  Dropzone.autoDiscover = false;
  new Dropzone('#postCreateForm',{
    paramName: "post_images_attributes",
    autoProcessQueue: false,
    uploadMultiple: true,
    clickable: '.js-input-create-dropzone',
    maxFiles: 10,
    addRemoveLinks: true,
    previewsContainer: ".post-create-images-preview",
    thumbnailWidth: 250,
    thumbnailHeight: null,
    init: function(){
      var myDropzone = this;
      this.on("addedfile", function() {
        // action after add file
      });

      $('#postCreateForm input[type="submit"]').on("click", function (e) {
        $(this).attr("disabled", "disabled");
        if(myDropzone.getQueuedFiles().length > 0){
          e.preventDefault();
          e.stopPropagation();
          myDropzone.processQueue();
        }else{
          $('form#postCreateForm').trigger('submit.rails');
        }
      });

      this.on("success", function(files, response) {
         window.location.href = '/stories/'+ response.storySlug;
      });

      this.on("error", function(files, response) {
        $('input[type="submit"]').attr("disabled", false);
        $(".error-message-content").html(" ");
        $.each(files, function(i, val) {
          files[i].status = Dropzone.QUEUED;
        });

        $.each(response, function( key, value ) {
          $(".error-message-content").append(""+ key +"  "+value[0]+"")
        });
      });
    }
  });
});