General help

Chats are different from messages.  They must be explicitly turned on and can run on a schedule of your choice, so it does not pose the same issue.

But if you for some reason you wanted a chat where only students could ask questions of teachers, the code above would be a good starting point for identifying who would be eligible to send and receive messages might be a good starting point.

Is it just me - or am I right in assuming that it has something to do with Ver 1.7 and Roles??  In the meantime - I have had to switch off messaging altogether   It wa all getting too graphic for me!!
Greg

Hi all,

Running 1.8.3 and tried inserting the code in various places including where Jeff suggested (just before the ?>) but to no avail. Anyone any suggestions?

Matt

This hack has always worked for us but since upgrading to Moodle 1.9.14 it doesn't seem to work anymore. Is anyone else finding this?

Many thanks
Alex

I have figured it out for admins. In the file message/index.php, the following lines need to be added after the line, "//send message form" (somewhere around line no. 270), 

$admins = get_admins();
        $isadmin = false;
        foreach ($admins as $admin) {
        if ($user2->id == $admin->id or $user1->id == $admin->id) {
            $isadmin = true;
            break;
            }
        }
        if ($isadmin) {
        // Continue
        } else {
        $messageerror = ("Students can send messages to administrator(s) only.");
        }

Manish.

Thanks - I have added your hack to the Messaging FAQ documentation in the See also section.

Hi Kevin,

Is there any method to restrict the students can see only teachers messages in Chat activity??

Thanks in advance

Entering this code in 2.9 prevented the student from being able to view the message from the teacher for me. It opens the correct URL but there is nothing displayed on the page.

Perhaps a slight modification is in order. I used the code as presented and got the same error Jon Fila reported, where we get the correct URL but a blank page.

Below is Kevin's original code: 

if((!user_has_role_assignment($user1->id,3))&&(!user_has_role_assignment($user2->id,3))
 $messageerror = "You can only send messages to teachers";

Each (!user_has_role_assignment($user1->,3)) is a separate statement to be tested. Two such statements are combined in the if statement, and the if statement needs its own opening and closing parenthesis. I'm going to space it out to make the idea more clear, but don't copy it the way you see it here

if (     ( !user_has_role_assignment($user1->,3) )     &&    ( !user_has_role_assignment($user2->id,3) )     )

I made changes to resolve these issues and my correct URL but blank page issue went away. 

Below is the code that works in my 2.7.1+ site, and I think that it will resolve the issue Jon Fila had with 2.9.x.

// Thanks to Kevin Bruton c.o. https://moodle.org/mod/forum/discuss.php?d=55934#p1128549

if((!user_has_role_assignment($user1->id,3))&&(!user_has_role_assignment($user2->id,3))) {
    $messageerror = "You can only send messages to teachers";
}

I think the lack of closing parenthesis was causing the script on the page to fail after line 171, which is why we get the correct URL but no content. I advise you to try Kevin's original code first. If you get the error described by Jon, try the edited version below. There haven't been enough people posting back over time to know if the error happens on all systems or only some. So again, I offer this as a possible solution if Kevin's fix doesn't quite get you where you were hoping to go.