Add download dropdown

ckanext/datatablesview/public/datatablesview.js

@@ -1,7 +1,43 @@
+const run_query = function(params, format) {
+  console.log(format, params);
+}
+
+
 this.ckan.module('datatables_view', function (jQuery) {
   return {
     initialize: function() {
-      jQuery('#dtprv').DataTable({});
+      const datatable = jQuery('#dtprv').DataTable({});
+
+      // Adds download dropdown to buttons menu
+      datatable.button().add(2, {
+        text: 'Download',
+        extend: 'collection',
+        buttons: [{
+          text: 'CSV',
+          action: function (e, dt, button, config) {
+            const params = datatable.ajax.params();
+            run_query(params, 'csv');
+          }
+        }, {
+          text: 'TSV',
+          action: function (e, dt, button, config) {
+            const params = datatable.ajax.params();
+            run_query(params, 'tsv');
+          }
+        }, {
+          text: 'JSON',
+          action: function (e, dt, button, config) {
+            const params = datatable.ajax.params();
+            run_query(params, 'json');
+          }
+        }, {
+          text: 'XML',
+          action: function (e, dt, button, config) {
+            const params = datatable.ajax.params();
+            run_query(params, 'xml');
+          }
+        }]
+      });
     }
   }
 });

ckanext/datatablesview/templates/datatables/datatables_view.html

@@ -26,7 +26,7 @@
         {
           "extend": "colvis",
           "text": "{{ _('Hide/Unhide Columns') }}"
-        }{{ ', "copy", "excel", "print"' | safe
+        }{{ ', "copy", "print"' | safe
           if resource_view.get('export_buttons') else ''}}
         ]'
       data-keys='true'>