Fix L5.2.11 breaking change in PresenceVerifier + support defining custom connection

Author: patrickbrouwers

src/Validation/DoctrinePresenceVerifier.php

@@ -13,6 +13,13 @@ class DoctrinePresenceVerifier implements PresenceVerifierInterface
      */
     protected $registry;
 
+    /**
+     * The database connection to use.
+     *
+     * @var string
+     */
+    protected $connection = null;
+
     /**
      * @param ManagerRegistry $registry
      */
@@ -109,6 +116,10 @@ protected function queryExtraConditions(array $extra, QueryBuilder $builder)
      */
     protected function getEntityManager($entity)
     {
+        if (!is_null($this->connection)) {
+            return $this->registry->getManager($this->connection);
+        }
+
         return $this->registry->getManagerForClass($entity);
     }
 
@@ -121,4 +132,16 @@ protected function prepareParam($column)
     {
         return str_replace('.', '', $column);
     }
+
+    /**
+     * Set the connection to be used.
+     *
+     * @param string $connection
+     *
+     * @return void
+     */
+    public function setConnection($connection)
+    {
+        $this->connection = $connection;
+    }
 }