Fixed: Upgrading from 3.2.1 to 3.5.0 produces error "Undefined column…

…: 7 ERROR" #172 (#174)

src/Mixins/JoinRelationship.php

@@ -9,6 +9,7 @@
 use Illuminate\Database\Eloquent\Relations\Relation;
 use Illuminate\Database\Query\Builder as QueryBuilder;
 use Illuminate\Database\Query\Expression;
+use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Str;
 use Kirschbaum\PowerJoins\JoinsHelper;
 use Kirschbaum\PowerJoins\PowerJoinClause;
@@ -378,7 +379,7 @@ public function orderByPowerJoins(): Closure
                     )
                 )
                     ->groupBy(sprintf('%s.%s', $this->getModel()->getTable(), $this->getModel()->getKeyName()))
-                    ->orderBy(sprintf('%s', $aliasName), $direction);
+                    ->orderBy(DB::raw(sprintf('%s', $aliasName)), $direction);
             } else {
                 if ($column instanceof Expression) {
                     $this->orderBy($column, $direction);