Version 31 (modified by kparlar, 8 years ago) (diff)


Discussion forum plugin


The DiscussionPlugin adds discussion forums to Trac. An arbitrary number of forums can be added, and each forum has a list of moderators who can block posts, etc. Plugin is administrated directly with apropriate rights for now but WebAdminPlugin support is planned.

Bugs/Feature Requests

Existing bugs and feature requests for DiscussionPlugin are here.

If you have any issues, create a new ticket.


You can download zipped sources here.


You can check out the source for DiscussionPlugin from Subversion at


After installing plugin's egg you can set in trac.ini configuration file following variables:

title = Discussion

If you run Trac in environment which needs to enable plugins explicitly put in trac.ini these lines:

tracdiscussion.init.discussioninit = enabled
tracdiscussion.timeline.discussiontimeline = enabled = enabled
tracdiscussion.admin.discussionwebadmin = enabled
tracdiscussion.core.discussioncore = enabled

The next step is to upgrade your environment:

# trac-admin <path_to_environment> upgrade

For now sqlite version 3 or PostgreSQL is required as SQL backend for running this plugin.


Discussion plugin defines four permissions. With DISCUSSION_VIEW permission you can view all topics and you can post replies to them with DISCUSSION_APPEND permission. DISCUSSION_MODERATE permission gives you rights to delete replies or topics where are you defined as moderator. DISCUSSION_ADMIN permission gives you administrator rights to create, modify or delete forum groups, forums and topics. You can add these permissions by typing following commands from commandline or you can use WebAdminPlugin to do it for you.

# trac-admin <path_to_environment> permission add <user> DISCUSSION_VIEW
# trac-admin <path_to_environment> permission add <user> DISCUSSION_APPEND
# trac-admin <path_to_environment> permission add <user> DISCUSSION_MODERATE
# trac-admin <path_to_environment> permission add <user> DISCUSSION_ADMIN


There are few wiki macros available:

[forum:<forum_id> <text>]

Displays link to forum with id <id> and text <text>. Second argument is optional.

[topic:<topic_id> <text>]

Displays link to topic with id <id> and text <text>. Second argument is optional.

[message:<message_id> <text>]

Displays link to reply with id <id> and text <text>. Second argument is optional.


Displays content of topic with subject <topic_subject>. If no subject given displays content of topic with same subject as name of current wiki page.


Discuss this on the [forum:trac-dev Trac Development forum]. 
Useful threads are [topic:23 this one] and [topic:96 this one].


Because of that DiscussionPlugin code is growing up, I've made testing sheet for controling if some feature had't been broken sine last commits. You can find this sheet in plugin's SVN repository.


Poll(Are you using this plugin?; Yes, it's usefull.; No, it's useless.; No, I don't need it.); I think it will help?

Change Log

[14140] by hasienda on 2014-08-30 23:24:03
DiscussionPlugin: Provide permalink to most recently founded topic, refs #8232.

The link can be copied from the bottom of any (non-empty) forum topic listing.

[14139] by hasienda on 2014-08-30 17:20:13
DiscussionPlugin: Prevent TypeError: tuple indices must be integers, not str, refs #11902.

Thanks to Samuel Degrande for the original report and to Jun Omae for
explaining the issue and providing both, an elegant fix and improved unit tests.

[13945] by hasienda on 2014-05-31 23:44:08
DiscussionPlugin: Extend use of new attribute getter api method, refs #11706.

Preventing TypeError in case of invalid ID argument is required for this
use, and doesn't hurt for others anyway.

[13944] by hasienda on 2014-05-31 23:14:21
DiscussionPlugin: Review wiki macros and syntax provider code, refs #756 and #11706.

This includes a wide range of changes from adding another db access method to
api over moving SQL into model module to correcting resource ID as
required for fine-grained permission support.

Adding the missing import from trac.resource as follow-up to [9640] suggests
rare use of discussion WikiMacros so far.

[13942] by hasienda on 2014-05-30 22:32:02
DiscussionPlugin: Hotfix for topic (attachment parent) Trac resource, refs #756 and #11800.

I've been expecting issues when moving on towards unified resources and
resource permissions. This is another hack before being able to associate
attachments with full resource path, not just topic, the current shortcut.


Author: athomas
Contributors: Blackhex

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