Merge pull request #3015 from Laravel-Backpack/fix-for-left-join-clauses

[4.X] Add table prefix to backpack orderBy clauses.

Author: tabacitu

src/app/Http/Controllers/Operations/ListOperation.php

@@ -100,7 +100,7 @@ public function search()
                 // clear any past orderBy rules
                 $this->crud->query->getQuery()->orders = null;
                 // apply the current orderBy rules
-                $this->crud->query->orderBy($column['name'], $column_direction);
+                $this->crud->query->orderByRaw($this->crud->model->getTable().'.'.$column['name'].' '.$column_direction);
             }
 
             // check for custom order logic in the column definition
@@ -126,7 +126,7 @@ public function search()
             }
         });
         if (! $hasOrderByPrimaryKey) {
-            $this->crud->query->orderByDesc($this->crud->model->getKeyName());
+            $this->crud->query->orderByRaw($this->crud->model->getTable().'.'.$this->crud->model->getKeyName().' DESC');
         }
 
         $entries = $this->crud->getEntries();