[TikiWiki-commits] [Git][tikiwiki/tiki][30.x] [BP][FIX] Tracker item history: pre-render field values before template to...

Bruno Kambere pushed to branch 30.x at Tiki Wiki CMS Groupware / Tiki


Commits:
8410c98d by Bruno Kambere at 2026-05-04T18:43:10+03:00
[BP][FIX] Tracker item history: pre-render field values before template to avoid "Too late to modify headers"
---
* [FIX] Tracker item history: pre-render field values before template to avoid "Too late to modify headers"
---
* [FIX] Tracker item history: pre-render field values before template to avoid "Too late to modify headers"

See merge request tikiwiki/tiki!10052

See merge request tikiwiki/tiki!10132

- - - - -


2 changed files:

- lib/core/Services/Tracker/Controller.php
- templates/tracker/item_history.tpl


Changes:

=====================================
lib/core/Services/Tracker/Controller.php
=====================================
@@ -2400,30 +2400,51 @@ class Services_Tracker_Controller
                             ];
                         }
                     }
-                    if (TIKI_API) {
-                        $field_value = $field_option[$hist['fieldId']];
+                    // Pre-render field values here in the controller, before Smarty starts rendering the template.
+                    $field_value = $field_option[$hist['fieldId']];
+                    if (! empty($field_value['fieldId']) && $field_value['fieldId'] > 0) {
+                        $emptyTemplate = TikiLib::lib('smarty')->getEmptyInternalTemplate();
                         if (empty($diff_style)) {
-                            if (! empty($field_value['fieldId'])) {
+                            $field_value['value'] = $hist['value'];
+                            $hist['rendered_value'] = smarty_function_trackeroutput([
+                                'field' => $field_value,
+                                'list_mode' => 'csv',
+                                'history' => 'y',
+                                'item' => $item_info,
+                                'process' => 'y',
+                            ], $emptyTemplate);
+                            $field_value['value'] = $hist['new'];
+                            $hist['rendered_new'] = smarty_function_trackeroutput([
+                                'field' => $field_value,
+                                'list_mode' => 'csv',
+                                'history' => 'y',
+                                'item' => $item_info,
+                                'process' => 'y',
+                            ], $emptyTemplate);
+
+                            if (TIKI_API) {
+                                $hist['value'] = $hist['rendered_value'];
+                                $hist['new'] = $hist['rendered_new'];
                                 $field_value['value'] = $hist['value'];
-                                $hist['value'] = smarty_function_trackeroutput([
+                                $hist['rendered_value'] = smarty_function_trackeroutput([
                                     'field' => $field_value,
-                                    'list_mode' => 'csv',
+                                    'list_mode' => 'y',
                                     'history' => 'y',
                                     'item' => $item_info,
                                     'process' => 'y',
-                                ], TikiLib::lib('smarty')->getEmptyInternalTemplate());
+                                ], $emptyTemplate);
                                 $field_value['value'] = $hist['new'];
-                                $hist['new'] = smarty_function_trackeroutput([
+                                $hist['rendered_new'] = smarty_function_trackeroutput([
                                     'field' => $field_value,
-                                    'list_mode' => 'csv',
+                                    'list_mode' => 'y',
                                     'history' => 'y',
                                     'item' => $item_info,
                                     'process' => 'y',
-                                ], TikiLib::lib('smarty')->getEmptyInternalTemplate());
+                                ], $emptyTemplate);
                             }
                         } else {
                             $field_value['value'] = $hist['new'];
-                            $hist['diff'] = smarty_function_trackeroutput([
+                            $hist['rendered_diff'] = smarty_function_trackeroutput([
                                 'field' => $field_value,
                                 'list_mode' => 'y',
                                 'history' => 'y',
@@ -2431,25 +2452,11 @@ class Services_Tracker_Controller
                                 'process' => 'y',
                                 'oldValue' => $hist['value'],
                                 'diff_style' => $diff_style,
-                            ], TikiLib::lib('smarty')->getEmptyInternalTemplate());
-                        }
-                        if (! empty($field_value['fieldId'])) {
-                            $field_value['value'] = $hist['value'];
-                            $hist['rendered_value'] = smarty_function_trackeroutput([
-                                'field' => $field_value,
-                                'list_mode' => 'y',
-                                'history' => 'y',
-                                'item' => $item_info,
-                                'process' => 'y',
-                            ], TikiLib::lib('smarty')->getEmptyInternalTemplate());
-                            $field_value['value'] = $hist['new'];
-                            $hist['rendered_new'] = smarty_function_trackeroutput([
-                                'field' => $field_value,
-                                'list_mode' => 'y',
-                                'history' => 'y',
-                                'item' => $item_info,
-                                'process' => 'y',
-                            ], TikiLib::lib('smarty')->getEmptyInternalTemplate());
+                            ], $emptyTemplate);
+
+                            if (TIKI_API) {
+                                $hist['diff'] = $hist['rendered_diff'];
+                            }
                         }
                     }
                 }


=====================================
templates/tracker/item_history.tpl
=====================================
@@ -90,8 +90,8 @@
                             </td>
                             {if empty($diff_style)}
                                 {if !empty($field_value.fieldId) && $field_value.fieldId > 0}
-                                    <td class="text">{$field_value.value=$hist.value}{trackeroutput field=$field_value list_mode=csv item=$item_info history=y process=y}</td>
-                                    <td class="text">{$field_value.value=$hist.new}{trackeroutput field=$field_value list_mode=csv item=$item_info history=y process=y}</td>
+                                    <td class="text">{$hist.rendered_value}</td>
+                                    <td class="text">{$hist.rendered_new}</td>
                                 {else}
                                     <td class="text">{$hist.value|escape}</td>
                                     <td class="text">{$hist.new|escape}</td>
@@ -99,8 +99,7 @@
                             {else}
                                 <td colspan="2" class="tracker-diff {$diff_style}">
                                     {if !empty($field_value.fieldId) && $field_value.fieldId > 0}
-                                        {$field_value.value=$hist.new}
-                                        {trackeroutput field=$field_value list_mode='y' history=y item=$item_info process=y oldValue=$hist.value diff_style=$diff_style}
+                                        {$hist.rendered_diff}
                                     {else}
                                         {wikidiff object_type=direct oldver=$hist.value newver=$hist.new diff_style=$diff_style}
                                     {/if}



View it on GitLab: https://gitlab.com/tikiwiki/tiki/-/commit/8410c98d68d3ff7b47974b7f93e8ed1c7eed98a7

-- 
View it on GitLab: https://gitlab.com/tikiwiki/tiki/-/commit/8410c98d68d3ff7b47974b7f93e8ed1c7eed98a7
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