Check if table is already joined in Laravel Query Builder

BaseModel.php

<?php

class BaseModel extends Eloquent {

    public static function isJoined($query, $table)
    {
        $joins = $query->getQuery()->joins;
        if($joins == null) {
            return false;
        }

        foreach ($joins as $join) {
            if ($join->table == $table) {
                return true;
            }
        }

        return false;
    }

}

Thanks for this snippet, very useful

This method detects all kinds of joins (leftJoin(), join(), etc.)

Clarifying just in case someone else was wondering!