I'd love for a future release to incorporate the ability to limit the number of groups a member can join. For now, I guess I'll have to hack it in...which I'd rather not do.

But I am stuck...

I assume that i have to edit the following file:
components/com_groupjive/gj/core/members.php

Particularly the function:
function activatemember()

[code:1]function activatemember( $groupid = null ) {

global $_CB_database, $Itemid, $_CB_framework, $gjConfig;



if ( ! $groupid ) {

$groupid = (int) cbGetParam( $_REQUEST, 'groupid', 0 );

}



if ( ! $_CB_framework->myId() ) {

HTML_wg::errorpage( GJ_NOTAUTH, null, $groupid, 'error' );

return;

}



$code = addslashes( cbGetParam( $_REQUEST, 'code', null ) );



$query = 'SELECT COUNT( ' . $_CB_database->NameQuote( 'id' ) . ' )'

. "\n FROM " . $_CB_database->NameQuote( '#__gj_active' )

. "\n WHERE " . $_CB_database->NameQuote( 'code' ) . " = " . $_CB_database->Quote( $code )

. "\n AND " . $_CB_database->NameQuote( 'too' ) . " = " . (int) $_CB_framework->myId()

. "\n AND " . $_CB_database->NameQuote( 'groups' ) . " = " . (int) $groupid;

$_CB_database->setQuery( $query );

$count = $_CB_database->loadResult();

if ( $_CB_database->getErrorNum() ) {

echo $_CB_database->stderr();

return;

}



if ( $count == 0 ) {

HTML_wg::errorpage( GJ_INVITE_NOT_EXIST, null, $groupid, 'error' );

return;

}



$query = 'UPDATE ' . $_CB_database->NameQuote( '#__gj_users' )

. "\n SET " . $_CB_database->NameQuote( 'status' ) . " = " . $_CB_database->Quote( 'active' )

. "\n WHERE " . $_CB_database->NameQuote( 'id_group' ) . " = " . (int) $groupid

. "\n AND " . $_CB_database->NameQuote( 'id_user' ) . " = " . (int) $_CB_framework->myId();

$_CB_database->setQuery( $query );

if ( ! $_CB_database->query() ) {

echo $_CB_database->stderr();

return;

}



$query = 'DELETE'

. "\n FROM " . $_CB_database->NameQuote( '#__gj_active' )

. "\n WHERE " . $_CB_database->NameQuote( 'code' ) . " = " . $_CB_database->Quote( $code )

. "\n AND " . $_CB_database->NameQuote( 'too' ) . " = " . $_CB_database->Quote( $_CB_framework->myUsername() );

$_CB_database->setQuery( $query );

if ( ! $_CB_database->query() ) {

echo $_CB_database->stderr();

return;

}



if ( $gjConfig ) {

$message = GJ_NEW_MEMBER;

$name = $_CB_framework->myUsername();



if ( $gjConfig ) {

$myId = $_CB_framework->myId();



if ( $myId ) {

$cbUser =& CBuser::getInstance( $myId );



if ( ! $cbUser ) {

$cbUser =& CBuser::getInstance( null );

}



$name = $cbUser->_cbuser->name;

}

}



notify( $groupid, $gjConfig, $message, $name );

}



$_CB_framework->redirect( 'index.php?option=com_groupjive&action=gj.core.groups.showgroup&groupid=' . $groupid . '&Itemid=' . $Itemid, GJ_WELCOME );

}[/code:1]

If anyone knows the code to add to this function to say: if(member belongs to another group) then error - it would be greatly appreciated!

P.S. if posting this question is a no-no, just let me know and I pre-apologize!

Here is a hack that I was toying around with a few months back. Perhaps some of this might apply. If you work out a good solution please tell us.

www.joomlapolis.com/component/option,com_joomlaboard/Itemid,38/func,view/catid,36/id,109414/

While I'm sure your solution works great for the groups page...I am actually trying to hide the group link (or better yet the entire tab) from the user's CB profile. I'm pretty sure the file modified would have to be /components/com_comprofiler/plugin/user/plug_cbgroupjive/cb.groupjive.php, but I have no clue how to do it!

Do you have any idea of how your hack could be integrated into the cb.groupjive.php file so that it hides the tab if the user that is logged in is already subscribed to a group?