Fix schema export with too many tables

We need to submit tables in POST parameters as there can be too many of
them to be included in GET.

Fixes #12234

Signed-off-by: Michal Čihař <michal@cihar.com>

ChangeLog

@@ -3,6 +3,7 @@ phpMyAdmin - ChangeLog
 
 4.6.2 (not yet released)
 - issue #12225 Use https for documentation links
+- issue #12234 Fix schema export with too many tables
 
 4.6.1 (2016-05-02)
 - issue #12120 PMA_Util not found in insert_edit.lib.php

js/pmd/move.js

@@ -1039,10 +1039,16 @@ function Export_pages()
             PMA_ajaxRemoveMessage($msgbox);
 
             var $form = $(data.message);
-            $form.attr('action', $form.attr('action') + '?' + (Get_url_pos(true).substring(1)));
             if (!pmd_tables_enabled) {
                 $form.append('<input type="hidden" name="offline_export" value="true" />');
             }
+            $.each(Get_url_pos(true).substring(1).split('&'), function() {
+                var pair = this.split('=');
+                var input = $('<input type="hidden" />');
+                input.attr('name', pair[0]);
+                input.attr('value', pair[1]);
+                $form.append(input);
+            });
             var $formatDropDown = $form.find('#plugins');
             $formatDropDown.change(function() {
                 var format = $formatDropDown.val();

templates/database/designer/schema_export.phtml

@@ -8,4 +8,4 @@
         <input type="hidden" name="page_number" value="<?= htmlspecialchars($page); ?>" />
         <?= PMA_pluginGetOptions('Schema', $export_list); ?>
     </fieldset>
-</form>
+</form>