Add location delete support

app/Http/Controllers/Admin/LocationsController.php

@@ -27,9 +27,28 @@ class LocationsController extends Controller
         ]);
     }
 
-    public function postView(Request $request)
+    public function deleteLocation(Request $request, $id)
     {
-        $location = Models\Location::findOrFail($request->input('location_id'));
+        $model = Models\Location::select(
+            'locations.id',
+            DB::raw('(SELECT COUNT(*) FROM nodes WHERE nodes.location = locations.id) as a_nodeCount'),
+            DB::raw('(SELECT COUNT(*) FROM servers WHERE servers.node IN (SELECT nodes.id FROM nodes WHERE nodes.location = locations.id)) as a_serverCount')
+        )->where('id', $id)->first();
+
+        if (!$model) {
+            return response()->json([
+                'error' => 'No location with that ID exists on the system.'
+            ], 404);
+        }
+
+        if ($model->a_nodeCount > 0 || $model->a_serverCount > 0) {
+            return response()->json([
+                'error' => 'You cannot remove a location that is currently assigned to a node or server.'
+            ], 422);
+        }
+
+        $model->delete();
+        return response('', 204);
     }
 
 }

app/Http/Routes/AdminRoutes.php

@@ -216,6 +216,9 @@ class AdminRoutes {
                 'as' => 'admin.locations',
                 'uses' => 'Admin\LocationsController@getIndex'
             ]);
+            $router->delete('/{id}', [
+                'uses' => 'Admin\LocationsController@deleteLocation'
+            ]);
         });
 
         // API Routes