added having cities filter

Author: augusthur

src/Resource/CountryResource.php

@@ -24,6 +24,10 @@ public function retrieveCountries($subject, $options = [])
             'from' => [
                 'type' => 'string',
             ],
+            'having' => [
+                'type' => 'string',
+                'enum' => ['cities'],
+            ],
             'region_id' => [
                 'type' => 'integer',
                 'minimum' => 1,
@@ -42,6 +46,9 @@ public function retrieveCountries($subject, $options = [])
         if (isset($options['region_id'])) {
             $query->where('region_id', $options['region_id']);
         }
+        if (isset($options['having'])) {
+            $query->has($options['having']);
+        }
         return new Paginator($query, $options);
     }
 }

src/Resource/RegionResource.php

@@ -24,6 +24,10 @@ public function retrieveRegions($subject, $options = [])
             'from' => [
                 'type' => 'string',
             ],
+            'having' => [
+                'type' => 'string',
+                'enum' => ['cities'],
+            ],
         ]);
         $v = $this->validation->fromSchema($pagSch);
         $options = $this->validation->prepareData($pagSch, $options, true);
@@ -35,6 +39,10 @@ public function retrieveRegions($subject, $options = [])
                 $q->distance('point', new Point($a, $b), $options['distance']);
             });
         }
+        // TODO mejorar porque no es dinámico
+        if (isset($options['having'])) {
+            $query->has('countries.cities');
+        }
         return new Paginator($query, $options);
     }
 }