diff --git a/Model.php b/Model.php
index 2cc0f41..1b19a05 100644
--- a/Model.php
+++ b/Model.php
@@ -266,13 +266,13 @@ class Model extends Base\Model
 
 
     /**
-     * @param ModelInterface|string $modelName
+     * @param string $modelName
      * @param string $foreignKey
      * @param string $localKey
      * @return string
      * @throws Exception
      */
-    private function _hasBase(ModelInterface|string $modelName, string $foreignKey, string $localKey): string
+    private function _hasBase(string $modelName, string $foreignKey, string $localKey): string
     {
         if (($value = $this->{$localKey}) === null) {
             throw new Exception("Need join table primary key.");
@@ -280,7 +280,7 @@ class Model extends Base\Model
 
         $relation = $this->getRelation();
 
-        $primaryKey = $modelName . $foreignKey . $value;
+        $primaryKey = str_replace('\\\\', '_', $modelName) . '_' . $foreignKey . '_' . $value;
         if (!$relation->hasIdentification($primaryKey)) {
             $relation->bindIdentification($primaryKey, $modelName::query()->where([$foreignKey => $value]));
         }
@@ -289,51 +289,51 @@ class Model extends Base\Model
 
 
     /**
-     * @param ModelInterface|string $modelName
+     * @param string $modelName
      * @param string $foreignKey
      * @param string $localKey
      * @return HasOne|ActiveQuery
      * @throws Exception
      */
-    public function hasOne(ModelInterface|string $modelName, string $foreignKey, string $localKey): HasOne|ActiveQuery
+    public function hasOne(string $modelName, string $foreignKey, string $localKey): HasOne|ActiveQuery
     {
         return new HasOne($this->_hasBase($modelName, $foreignKey, $localKey));
     }
 
 
     /**
-     * @param ModelInterface|string $modelName
+     * @param string $modelName
      * @param string $foreignKey
      * @param string $localKey
      * @return ActiveQuery|HasCount
      * @throws Exception
      */
-    public function hasCount(ModelInterface|string $modelName, string $foreignKey, string $localKey): ActiveQuery|HasCount
+    public function hasCount(string $modelName, string $foreignKey, string $localKey): ActiveQuery|HasCount
     {
         return new HasCount($this->_hasBase($modelName, $foreignKey, $localKey));
     }
 
 
     /**
-     * @param ModelInterface|string $modelName
+     * @param string $modelName
      * @param string $foreignKey
      * @param string $localKey
      * @return ActiveQuery|HasMany
      * @throws Exception
      */
-    public function hasMany(ModelInterface|string $modelName, string $foreignKey, string $localKey): ActiveQuery|HasMany
+    public function hasMany(string $modelName, string $foreignKey, string $localKey): ActiveQuery|HasMany
     {
         return new HasMany($this->_hasBase($modelName, $foreignKey, $localKey));
     }
 
     /**
-     * @param ModelInterface|string $modelName
+     * @param string $modelName
      * @param string $foreignKey
      * @param string $localKey
      * @return ActiveQuery|HasMany
      * @throws Exception
      */
-    public function hasIn(ModelInterface|string $modelName, string $foreignKey, string $localKey): ActiveQuery|HasMany
+    public function hasIn(string $modelName, string $foreignKey, string $localKey): ActiveQuery|HasMany
     {
         if (($value = $this->{$localKey}) === null) {
             throw new Exception("Need join table primary key.");
@@ -341,7 +341,7 @@ class Model extends Base\Model
 
         $relation = $this->getRelation();
 
-        $primaryKey = $modelName . $foreignKey . json_encode($value, JSON_UNESCAPED_UNICODE);
+        $primaryKey = str_replace('\\\\', '_', $modelName) . '_' . $foreignKey . '_' . implode('_', $value);
         if (!$relation->hasIdentification($primaryKey)) {
             $relation->bindIdentification($primaryKey, $modelName::query()->whereIn($foreignKey, $value));
         }