superset/templates/superset/models/database/macros.html

{% macro testconn() %}
  <script>
    $("#sqlalchemy_uri").parent()
      .append('<button id="testconn" class="btn">{{ _("Test Connection") }}</button>');
    $("#testconn").click(function(e) {
      e.preventDefault();
      var url = "/superset/testconn";
      var csrf_token = "{{ csrf_token() }}";

      $.ajaxSetup({
        beforeSend: function(xhr, settings) {
          if (!/^(GET|HEAD|OPTIONS|TRACE)$/i.test(settings.type) && !this.crossDomain) {
            xhr.setRequestHeader("X-CSRFToken", csrf_token);
          }
        }
      });

      var data = {};
      try{
        data = JSON.stringify({
          uri: $("#sqlalchemy_uri").val(),
          name: $('#database_name').val(),
          extras: JSON.parse($("#extra").val()),
        })
      } catch(parse_error){
        alert("Malformed JSON in the extras field: " + parse_error);
        return false
      }

      $.ajax({
        method: "POST",
        url: url,
        data: data,
        dataType: 'json',
        contentType: "application/json; charset=utf-8"
      }).done(function(data) {
          alert("Seems OK!");
          if ($('#tables').length == 0)
            $('body div.container').append('<div id="tables"></div>');
          div = $('#tables')
          div.html('Tables:<br>');
          $.each(data, function(i, d){
            var id = 'tbl_' + d;
            div.append('<span id="' + id + '" style="margin: 0px 10px 10px 0px;" class="btn btn-default">' + d + '</span>')
            $('#' + id).click(function(){window.location = '/tablemodelview/add';})
          });
      }).fail(function(error) {
          var respJSON = error.responseJSON;
          var errorMsg = error.responseText;
          if (respJSON && respJSON.message) {
              errorMsg = respJSON.message;
          }
          alert("ERROR: " + errorMsg);
      });
      return false;
    });
  </script>
{% endmacro %}