Last updated April 24, 2008. Created by scedwar on April 24, 2008.
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I use this to show a block:

1) only in a group;
2) only if the user has access (for example, block won't show if the node is unpublished, even if the user owns the node/group);
3) only in groups of a particular named type; and/or
4) only to group admins.

<?php
//check og module exists
if (module_exists('og')){
//check we've got a group, rights to view the group,
// and of type "group_type" - change this to whichever group you want to restrict the block to
//or remove the condition entirely
if (($group = og_get_group_context()) && node_access('view', $group) && ($group->type == 'group_type') ) {
//check current user is a team admin
if (og_is_node_admin($group))  return TRUE;
}
}
?>

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Comments

og_is_node_admin($group) is now og_is_group_admin($group)

<?php
//check og module exists
if (module_exists('og')){
//check we've got a group, rights to view the group,
// and of type "group_type" - change this to whichever group you want to restrict the block to
//or remove the condition entirely
if (($group = og_get_group_context()) && node_access('view', $group) && ($group->type == 'group_type') ) {
//check current user is a team admin
if (og_is_group_admin($group))  return TRUE;
}
}
?>

I did a filtering for membership request type of a group (approved, invite-only etc.)

I just added ($group->og_selective == '2') to the if statement.

0 is for open, 1 is for moderated, 2 is for invite-only, 3 is for closed groups.

The final code was:

<?php
//check og module exists
if (module_exists('og')){
//check we've got a group, rights to view the group,
// and of type "group_type" - change this to whichever group you want to restrict the block to
//or remove the condition entirely
if (($group = og_get_group_context()) && node_access('view', $group) && ($group->type == 'group_type') && ($group->og_selective == '2')) {
//check current user is a team admin
if (og_is_node_admin($group))  return TRUE;
}
}
?>

I'd like to make a certain block visible to only members of group "Exhibitors"
However, I'd like this block to be visible on both group and non-group pages (so, anywhere on the site).

I've set the block to only show if the following php returns true:

<?php
//check og module exists
if (module_exists('og')){
//check we've got a group, rights to view the group,
// and of type "group_type" - change this to whichever group you want to restrict the block to
//or remove the condition entirely
if (($group = og_get_group_context()) && node_access('view', $group) && ($group->type == 'Exhibitors') ) {
return
TRUE;
}
}
?>

But it does not appear for any users. I'm assuming it's because it's missing an argument and og_get_group_context() is coming up without results.

Does anyone know how to remedy this problem?
Thanks

The techie formerly known as madmatter23
Grasmash.com - Drupal Tech Blog

Hey madmatter23,
After working on this for a while (had I think the same need as you), I came up with the following that seems to work:

<?php
//check og module exists
if (module_exists('og')){
//must pass the group id (aka gid) which is the nid of the group homepage (in my case 359)
 
if(og_is_group_member("359")) {
          return
TRUE;
  }
}
?>

See also http://drupalcontrib.org/api/function/og_is_group_member/6
That's where I got the idea.

here is what I have so far:

<?php
$node
= menu_get_object();
//is this a node and not the subscribe to group page?
if(empty($node)) {
    return
FALSE;
    } else {
       
//is it the right node group?
       
if ($node->type != 'course') {
        return
FALSE;
        } else {
            global
$user;
           
$uid = $user->uid;
           
//can we retrieve group context (optional)
           
if (($group = og_context()) && (!empty($group))) {
               
$group_type = $group['group_type'];
               
$gid = $group['gid'];
               
//does the third array exists (group admin)?
               
if (($get_role = og_get_user_roles($group_type, $gid, $uid)) && (array_key_exists(3, $get_role))) {
                    return
TRUE;
                } else {
                    return
FALSE;
                }
            }
        }
    }
?>

This does work however, only for site admin. Any other user, despite being the group admin, does not have the associative array ['3'].

Any help would be appreciated.