query users by role
-
16-10-2019 - |
Question
I have a custom plugin which queries users and usermeta, but I now need to filter admins out of the results. A very simplified version of my sql query is:
SELECT * FROM usermeta LEFT JOIN users ON users.ID = user_id
WHERE meta_key = 'last_name' AND
user_role != 'admin'
ORDER BY meta_value
ASC LIMIT 0, 25
user_role
is not a field, and i saw how it is stored as a config string, but i don't see how to make an equivalent query to this. Am i missing something?
Thanks.
Solution
You can use this function:
// get users with specified roles
function getUsersWithRole( $roles ) {
global $wpdb;
if ( ! is_array( $roles ) )
$roles = array_walk( explode( ",", $roles ), 'trim' );
$sql = '
SELECT ID, display_name
FROM ' . $wpdb->users . ' INNER JOIN ' . $wpdb->usermeta . '
ON ' . $wpdb->users . '.ID = ' . $wpdb->usermeta . '.user_id
WHERE ' . $wpdb->usermeta . '.meta_key = \'' . $wpdb->prefix . 'capabilities\'
AND (
';
$i = 1;
foreach ( $roles as $role ) {
$sql .= ' ' . $wpdb->usermeta . '.meta_value LIKE \'%"' . $role . '"%\' ';
if ( $i < count( $roles ) ) $sql .= ' OR ';
$i++;
}
$sql .= ' ) ';
$sql .= ' ORDER BY display_name ';
$userIDs = $wpdb->get_col( $sql );
return $userIDs;
}
OTHER TIPS
The 3rd line within the function did not work for me as array_walk
returns a boolean instead of the desired array. I've changed line 3 to:
$roles = array_map('trim',explode( ",", $roles ));
And it works for me now.
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