Fixes #4489: Fixed MySQL RBAC manager

framework/rbac/DbManager.php

@@ -345,7 +345,7 @@ class DbManager extends BaseManager
         $query = (new Query)->select('b.*')
             ->from(['a' => $this->assignmentTable, 'b' => $this->itemTable])
             ->where('a.item_name=b.name')
-            ->andWhere(['a.user_id' => $userId]);
+            ->andWhere(['a.user_id' => (string)$userId]);
 
         $roles = [];
         foreach ($query->all($this->db) as $row) {
@@ -383,7 +383,7 @@ class DbManager extends BaseManager
     {
         $query = (new Query)->select('item_name')
             ->from($this->assignmentTable)
-            ->where(['user_id' => $userId]);
+            ->where(['user_id' => (string)$userId]);
 
         $childrenList = $this->getChildrenList();
         $result = [];
@@ -470,7 +470,7 @@ class DbManager extends BaseManager
     public function getAssignment($roleName, $userId)
     {
         $row = (new Query)->from($this->assignmentTable)
-            ->where(['user_id' => $userId, 'item_name' => $roleName])
+            ->where(['user_id' => (string)$userId, 'item_name' => $roleName])
             ->one($this->db);
 
         if ($row === false) {
@@ -491,7 +491,7 @@ class DbManager extends BaseManager
     {
         $query = (new Query)
             ->from($this->assignmentTable)
-            ->where(['user_id' => $userId]);
+            ->where(['user_id' => (string)$userId]);
 
         $assignments = [];
         foreach ($query->all($this->db) as $row) {
@@ -614,7 +614,7 @@ class DbManager extends BaseManager
     public function revoke($role, $userId)
     {
         return $this->db->createCommand()
-            ->delete($this->assignmentTable, ['user_id' => $userId, 'item_name' => $role->name])
+            ->delete($this->assignmentTable, ['user_id' => (string)$userId, 'item_name' => $role->name])
             ->execute() > 0;
     }
 
@@ -624,7 +624,7 @@ class DbManager extends BaseManager
     public function revokeAll($userId)
     {
         return $this->db->createCommand()
-            ->delete($this->assignmentTable, ['user_id' => $userId])
+            ->delete($this->assignmentTable, ['user_id' => (string)$userId])
             ->execute() > 0;
     }