Redmine

I know that the rest api for wikis is in alpha but breaking redmine is not what I was expecting.

I need to modify a lot external hyperlinks on many wiki pages so I went to the Rest API to modify the page.

I am using the rest api:

• project api to fetch all the projects which has wiki module enabled in json.
• all the wiki page names of the project
• each wiki-page content to see if I need to modify it.

But when I want to modify the page via XML but also tested JSON, it is returning status code 201 Created not 204 No Content.

Below a XML example used to PUT to https://redmine.internal.domain/projects/prj/wiki/Release.xml, version of the wikipage is 5.

<?xml version="1.0"?><wiki_page><text>Some test</text><version>5</version><comments>Update links to SVN see #11655</comments></wiki_page>    

In redmine the page in question is not modify.
If I click on the wiki -> index by date, the page returns 500 Internal error. See also log output below.
But index by name I can see the pagename when using a other Release-test.xml.

logs snippits¶

Redmine log when clicking of index by date

I, [2025-10-16T14:26:15.911151 #1]  INFO -- : [e4e0d7c8-1537-4d2d-99ff-904b2cf39f31] Started GET "/projects/prj/wiki/date_index" for <ipadr> at 2025-10-16 14:26:15 +0200
I, [2025-10-16T14:26:15.911810 #1]  INFO -- : [e4e0d7c8-1537-4d2d-99ff-904b2cf39f31] Processing by WikiController#date_index as HTML
I, [2025-10-16T14:26:15.911841 #1]  INFO -- : [e4e0d7c8-1537-4d2d-99ff-904b2cf39f31]   Parameters: {"project_id"=>"prj"}
I, [2025-10-16T14:26:15.917863 #1]  INFO -- : [e4e0d7c8-1537-4d2d-99ff-904b2cf39f31]   Current user: r.v.dorst (id=7)
I, [2025-10-16T14:26:15.923989 #1]  INFO -- : [e4e0d7c8-1537-4d2d-99ff-904b2cf39f31] Completed 500 Internal Server Error in 12ms (ActiveRecord: 4.9ms (13 queries, 1 cached) | GC: 0.0ms)
F, [2025-10-16T14:26:15.927093 #1] FATAL -- : [e4e0d7c8-1537-4d2d-99ff-904b2cf39f31]
[e4e0d7c8-1537-4d2d-99ff-904b2cf39f31] NoMethodError (undefined method `to_date' for nil):
[e4e0d7c8-1537-4d2d-99ff-904b2cf39f31]
[e4e0d7c8-1537-4d2d-99ff-904b2cf39f31] app/controllers/wiki_controller.rb:62:in `block in date_index'
[e4e0d7c8-1537-4d2d-99ff-904b2cf39f31] app/controllers/wiki_controller.rb:62:in `each'
[e4e0d7c8-1537-4d2d-99ff-904b2cf39f31] app/controllers/wiki_controller.rb:62:in `group_by'
[e4e0d7c8-1537-4d2d-99ff-904b2cf39f31] app/controllers/wiki_controller.rb:62:in `date_index'
[e4e0d7c8-1537-4d2d-99ff-904b2cf39f31] lib/redmine/sudo_mode.rb:78:in `sudo_mode'

Redmine Log for the XML PUT

I, [2025-10-16T14:25:33.264844 #1]  INFO -- : [9f9f6af1-64cf-4956-b3e7-1b4f73d5792d] Started PUT "/projects/prj/wiki/Release.xml?key=<snip>" for <ipadr> at 2025-10-16 14:25:33 +0200
I, [2025-10-16T14:25:33.265305 #1]  INFO -- : [9f9f6af1-64cf-4956-b3e7-1b4f73d5792d] Processing by WikiController#update as XML
I, [2025-10-16T14:25:33.265329 #1]  INFO -- : [9f9f6af1-64cf-4956-b3e7-1b4f73d5792d]   Parameters: {"key"=>"<snip>", "project_id"=>"prj", "id"=>"Release"}
I, [2025-10-16T14:25:33.267488 #1]  INFO -- : [9f9f6af1-64cf-4956-b3e7-1b4f73d5792d]   Current user: r.v.dorst (id=7)
I, [2025-10-16T14:25:33.277452 #1]  INFO -- : [9f9f6af1-64cf-4956-b3e7-1b4f73d5792d] Completed 201 Created in 12ms (Views: 0.9ms | ActiveRecord: 4.8ms (14 queries, 2 cached) | GC: 0.0ms)

database¶

After some investigation in the database.

I see:

MariaDB [redmine]> select * from wiki_pages order by id desc limit 10;
+------+---------+-----------------------------+---------------------+-----------+-----------+
| id   | wiki_id | title                       | created_on          | protected | parent_id |
+------+---------+-----------------------------+---------------------+-----------+-----------+
| 2697 |     160 | Index                       | 2025-10-16 14:25:33 |         0 |      NULL |

MariaDB [redmine]> select * from wiki_contents where page_id = 2697 ;
Empty set (0.001 sec)

rerun the script¶

When running the code again. Fetching the wikipages json goes wrong to.
See the last line, version=null and updated_on=null.

{"wiki_pages":[{"title":"Changelog","parent":{"title":"Wiki"},"version":3,"created_on":"2021-04-20T12:51:32Z","updated_on":"2022-04-04T10:25:09Z"},{"title":"Deleted","version":6,"created_on":"2016-10-05T09:21:01Z","updated_on":"2021-04-22T15:46:54Z"},
{"title":"Index","version":null,"created_on":"2025-10-16T12:12:32Z","updated_on":null},

fix the issue¶

To fix the index by date issue and JSON API, removing id=2697 from wiki_pages seems enough to fix it.

I hope this can be fix soon or have a workaround.