BuddyPress.org

You’ve better to ask this on WP Symposium support if you don’t know how to handle this or on bbPress support. You’re on BuddyPress support here !

This is an issue for bbPress support.

Or you could try changing the display function in class BBP_Forums_Group_Extension from:
public function display() {
to
public function display($group_id = NULL) {

Try asking this over at the bbPress support forums.

@oliver_rub,

all i could say is that is an old request, even if confidential.
See this ticket opened 4 years ago
and this bbpress ticket kicked to 2.7 as idea. And why not 6.0 ? 😉

Supposing that if more people would ask, it will be resolved faster.

Aside, the gist given by imath need to be completed to work with BP 2.3.2.1 on text Tab (only) by adding
bp_is_group to if ( function_exists( 'bbpress' ) && is_bbpress() || bp_is_group() )

And to enable visual editor, no need of a plugin. See here.

Why are you using BuddyPress if you use Ultimate Member ?

Have you considered turning off the xprofile component in BP?

You might want to ask on bbPress forums about how to filter the author links in forums.

@danbp
Sorry for not writing that earlier. It seems that I need to work on my problem description skills. I enabled the visual tab already through an addon called bbpress-enable-tinymce-visual-tab, but since I used that for quite some time I forgot that the visual tab is switched off by default.
So my setting is: I have BuddyPress groups, with bbPress forums. I have the visual tab enabled (easier to use for non-techi persons). I have the @mentions feature enabled, but it only works in the text tab (the ‘quicktags’ argument on the bbPress link you gave me). So what I want is now somehow enable the @mentions feature also for the visual tab.
I thought that @oakcreative has a similar approach, thats why I joined the thread. But I´m not sure how to replicate his approach with bbPress…

Can you create a topic in a group forum front-end if you created the group?

Are the Forum Attribute settings ‘Forum, Open, Public’ in wp-admin > Forums > [some forum] ?

Did you check the settings here: /wp-admin/options-general.php?page=bbpress ?

Are you running any plugins that affect roles / permissions / capabilities ?

Does the same problem occur in a site-wide public forum?

Are you talking about Group Forums or site-wide forums?

Are you aware of the bbPress support site?

Re group name length: I was just guessing, since I cannot duplicate the error.
‘Vanhat talot’ is short, so that shouldn’t be the issue.

So you created a group – and the id was 0, correct ?
Then the next group failed due to the duplicate entry 0, correct ?
If so, then the group id field is not being auto-incremented.

The enable_forum field should be 0 if you did not select ‘I want a forum’ when you created the group.
If you did select ‘I want a forum’, which version of bbPress are you using?

The text tab used for group forum is striped by bbpress filters and BP filters. And the visual editor is set to off by default since bbp 2.3
If you need visual tab with some tinyMCE buttons, read here, maybe you can arrange this to your need ?

Enable Visual Editor

@danbp
Thanks for your suggestion Dan.
I already tried that. There are two problems with that snippent. The first being that the is_bbpress() is returning false when i access bbpress forums in a buddypress group (theme: firmasite). Thats easy to solve through eliminating that check.
The second problem is that currently the @mentions system isn’t working for the visual tab in tinyMCE, it works only for the text tab. Also discussed briefly between Paul Gibbs and Unsal Korkmaz here: https://buddypress.org/support/topic/buddypress-2-1-patsy/ (see comments)

One of the requirements for our platform is that users can use those fancy buttons in the visual tab, but having the mentions autocomplete only in the text tab is a little bit ..you know…unexpected for users 😉
Thus i hoped i can somehow manage to reproduce the approach of OakCreative, but I havent been successful.
Maybe also updating the at.js is a way to go, but the jump from the used version (0.5.2) to the current (1.3.0) seems to be to big to work just with replacing the script.
So this is my current knowledge about this topic. Does anyone know how to proceed? Or should i create a ticket for this, so that the devs can have a look into this in future releases? I havent found any ticket dealing with exactly this.

@oliver_rub,

to get @mention in bbpress topics, try this snippet
https://buddypress.org/support/topic/mention-autolink-to-profile/#post-237202

I´m currently working on the same problem; Making the @mentions work in the visual tab. But i try to achieve this within bbPress as well.
Any idea what files to change there? I´m struggling a little bit to find the lines you mentioned above.

edit: Did you come up with a more elegant solution in the mean time?

I added that snip to the bottom of the PLUGIN bbpress.php, NOT the THEME functions.php

I am going to scrounge to see how I can add that warning to the top of the page in the welcome.

That’s an old bug who was patched. (see here) Check bbpress code and update it if you’re using an older version.

Also, if you have debug mode on in wp-config, revert it to off.
If the message still remains, deactivate your theme and use Twenty Fifteen or Fourteen to test.
If the message disappear, you know the culprit. In that case , contact your theme support