code: function() {
          var form = this.element.find('form:first');
  
          if (!form) {
              return;
          }
  
          this.fireEvent('submit', [form]);
  
          var options = {
              url: form.attr('action'),
              type: (form.attr('method') || 'post').toUpperCase()
          };
  
          if (window.FormData) {
              options.processData = false;
              options.contentType = false;
              options.data = new FormData(form[0]);
          } else {
              options.data = form.serialize();
          }
  
          this.requestData(options);
      }
docs: Submit the form found within the modal.