Rather than doing pagination by extracting page numbers from data attributes and feeding them into the search action URL, use LINKS with ACTUAL URLS in them. What a time to be alive!

wagtail/snippets/static_src/wagtailsnippets/js/snippet-chooser-modal.js

@@ -7,8 +7,7 @@ SNIPPET_CHOOSER_MODAL_ONLOAD_HANDLERS = {
             });
 
             $('.pagination a', context).on('click', function() {
-                var page = this.getAttribute('data-page');
-                setPage(page);
+                loadResults(this.href);
                 return false;
             });
         }
@@ -28,31 +27,13 @@ SNIPPET_CHOOSER_MODAL_ONLOAD_HANDLERS = {
                 data['locale_filter'] = $('#snippet-chooser-locale', searchForm$).val();
             }
 
-            request = $.ajax({
-                url: searchUrl,
-                data: data,
-                success: function(data, status) {
-                    request = null;
-                    $('#search-results').html(data);
-                    ajaxifyLinks($('#search-results'));
-                },
-                error: function() {
-                    request = null;
-                }
-            });
+            loadResults(searchUrl, data);
             return false;
         }
 
-        function setPage(page) {
-            var dataObj = {p: page};
-
-            if ($('#id_q').length && $('#id_q').val().length) {
-                dataObj.q = $('#id_q').val();
-            }
-
-            request = $.ajax({
-                url: searchUrl,
-                data: dataObj,
+        function loadResults(url, data) {
+            var opts = {
+                url: url,
                 success: function(data, status) {
                     request = null;
                     $('#search-results').html(data);
@@ -61,8 +42,11 @@ SNIPPET_CHOOSER_MODAL_ONLOAD_HANDLERS = {
                 error: function() {
                     request = null;
                 }
-            });
-            return false;
+            }
+            if (data) {
+                opts.data = data;
+            }
+            request = $.ajax(opts);
         }
 
         $('form.snippet-search', modal.body).on('submit', search);

wagtail/snippets/templates/wagtailsnippets/chooser/results.html

@@ -28,7 +28,8 @@
         </tbody>
     </table>
 
-    {% include "wagtailadmin/shared/ajax_pagination_nav.html" with items=items %}
+    {% url 'wagtailsnippets:choose_results' model_opts.app_label model_opts.model_name as pagination_base_url %}
+    {% include "wagtailadmin/shared/pagination_nav.html" with items=items linkurl=pagination_base_url %}
 {% else %}
     {% if is_searching %}
          <p role="alert">{% blocktrans %}Sorry, no snippets match "<em>{{ query_string }}</em>"{% endblocktrans %}</p>