Email to user when a role is assigned

When an admin/teacher assigns a role to a user in course or category context you can send an email to the user which the role has been assigned by modifying the following moodle lib file.

/var/www/html/moodle/admin/roles/assign.php

In the file around the lines 103-111 by adding email_to_user() moodle lib function you can send the email to the user from the moodle support user. Be careful that email_to_user() function accepts from and to users as moodle user objects so you can not write simply emails and send.         

   foreach ($userstoassign as $adduser) {
                $allow = true;
 
                if ($allow) {
   
                    role_assign($roleid, $adduser->id, $context->id);

                    email_to_user($adduser, $supportuser, "Your role has been assigned in Moodle", "You have been assigned as a ".$assignableroles[$roleid]." in the ".$contextname ); 
                }
            }

After you add this the user will receive an email with subject "Your role has been assigned in Moodle" and message ie. "You have been assigned as a Course creator in the Category: Mathematics"

Moodle Adding Event Monitor Rules in Bulk to all of the Courses

Event Monitor Rules feature is a new and a missing feature which has arrived to moodle in version 2.8. This feature help students to be informed by email if a course material added updated or deleted etc. So they do not need to login to check whether a content has been added to the course or not. It also informs teachers and admins about  a specific event occurred (a course has been added, a content has been viewed etc.).

But if you are administering a moodle with 150+ courses it is real heavy duty task to add rules one by one to every course created in moodle.

So with the following php code you can add a rule to the every course created in moodle.

$link = mysql_connect('moodle_host_name_or_ip', 'database_username', 'database_password');
//if connection is not successful you will see text error
if (!$link) {
             die('Could not connect: ' . mysql_error());
}
//if connection is successfuly you will see message bellow
echo 'Connected successfully\n';

$type="\\core\\event\\course_module_created";
$content="Course content has been added.
";
$content2="Link : {rulename}
Description: {description}
Event Name: {eventname}
";

$type=mysql_real_escape_string($type);
$content=mysql_real_escape_string($content);
$content2=mysql_real_escape_string($content2);

mysql_select_db('moodle');


//This query finds the courses in moodle
$query_id= "select id from mdl_course";
$result_id = mysql_query($query_id);
echo $result_id;
while($row = mysql_fetch_row($result_id)) {
    echo $row[0];
    echo "\n";
//This below query adds the event monitor rules into he courses.
$query="INSERT INTO mdl_tool_monitor_rules (userid,courseid,name,plugin,eventname,description,
descriptionformat,frequency,timewindow,template,templateformat,timecreated,timemodified) VALUES('2','".$row[0]."',
'Course Content has been added','core','".$type."','".$content."','1','1','60','".$content2."','1','1445596840','1445596840')";
mysql_query($query);
    }
mysql_close($link);

?>

By changing the $type variable you can add any kind of event rules to the moodle.