var modalCalendar_request;
  // Show modal
  $('#modalCalendar').on('show.bs.modal', function (event) {
    // modal & the event triggering the modal
    var modal = $(this)
    var e = $(event.relatedTarget)
    // Update calendar
    if (e.data('id')) {
      modal.find('.modal-title').text('{{ __("Edit calendar") }} ' + e.data('id'));
      modal.find('.modal-dialog form').attr('action', '{{ url_for("calendar.sources.api01") }}/' + e.data('id') );
      modal.find('.modal-body input[name="name"]').val(e.data('name'));
      modal.find('.modal-body input[name="uri"]').val(e.data('uri'));
      modalCalendar_request = 'PUT';
      alert(modalCalendar_request);
    }
    // New calendar
    else {
      modal.find('.modal-title').text('{{ __("New remote calendar") }}');
      modal.find('.modal-dialog form').attr('action', '{{ url_for("calendar.sources.api01") }}/');
      modal.find('.modal-body input[name="name"]').val('');
      modal.find('.modal-body input[name="uri"]').val('');
      modalCalendar_request = 'POST';
    }
  });


  // Post (new) data, modify current page
  $("#calendar_form").ajaxSubmit({
    data: function() {
      alert('snd' + modalCalendar_request);
      return $(this).serialize();
    },
    headers: {
      "X-Http-Method-Override": modalCalendar_request
    },