ajax url is required

Author: Steffen

Resources/doc/setup.md

@@ -260,11 +260,11 @@ function order() {
 
 ## 7. Ajax
 
-| Option   | Type   | Default |
-|------    |--------|---------|
-| url      | string | ''      |
-| type     | string | 'GET'   |
-| pipeline | int    | 0       |
+| Option   | Type   | Default |          |
+|------    |--------|---------|----------|
+| url      | string |         | required |
+| type     | string | 'GET'   |          |
+| pipeline | int    | 0       |          |
 
 ## 8. Name
 Since the datatable class should extend the ``AbstractDatatableView`` and this one implements ``DatatableViewInterface``, a ``getName`` method is required. The returned value **must only include letters, numbers, underscores or dashes** as it will be a seed for the id of the generated container of the datatable.

Twig/DatatableTwigExtension.php

@@ -105,6 +105,11 @@ private function getOptions(AbstractDatatableView $datatable)
         $options['view_callbacks'] = $datatable->getCallbacks();
         $options['view_events'] = $datatable->getEvents();
         $options['view_columns'] = $datatable->getColumnBuilder()->getColumns();
+
+        if ('' === $datatable->getAjax()->getUrl()) {
+            throw new Exception('getOptions(): Specify an ajax url.');
+        }
+
         $options['view_ajax'] = $datatable->getAjax();
 
         $options['view_multiselect'] = $datatable->getColumnBuilder()->isMultiselect();