diff --git a/README.md b/README.md
index e80a72f..c33deb8 100644
--- a/README.md
+++ b/README.md
@@ -17,13 +17,13 @@ The preferred way to install this extension via [composer](http://getcomposer.or
 Either run
 
 ```
-php composer.phar require --prefer-dist mohorev/yii2-upload-behavior "*"
+php composer.phar require --prefer-dist maxodrom/yii2-upload-behavior "*"
 ```
 
 or add this code line to the `require` section of your `composer.json` file:
 
 ```json
-"mohorev/yii2-upload-behavior": "*"
+"maxodrom/yii2-upload-behavior": "*"
 ```
 
 Usage
@@ -143,7 +143,103 @@ class User extends ActiveRecord
 }
 ```
 
-Example view file:
+## Flexible configuration for path and URL generation 
+
+More flexible configuration for `path` and/or `url` behavior properties is that to use 
+callbacks or array for defining `path` or `url` generation logic.
+
+#### I. Via callbacks
+
+```php
+/**
+ * @inheritdoc
+ */
+public function behaviors()
+{
+    return [
+        [
+            'class' => \mohorev\file\UploadImageBehavior::class,
+            'attribute' => 'image',
+            'scenarios' => ['insert', 'update'],
+            'placeholder' => '@app/modules/user/assets/images/userpic.jpg',
+            'path' => function ($model) {
+                /** @var \app\models\UserProfile $model */
+                $basePath = '@webroot/upload/profiles/';
+                $path = implode('/', array_slice(str_split(md5($model->id), 2), 0, 2));
+                return $basePath . $path;
+            },
+            'url' => function ($model) {
+                /** @var \app\models\UserProfile $model */
+                $baseUrl = '@web/upload/profiles/';
+                $path = implode('/', array_slice(str_split(md5($model->id), 2), 0, 2));
+                return $baseUrl . $path;
+            },
+            'thumbs' => [
+                'thumb' => ['width' => 400, 'quality' => 90],
+                'preview' => ['width' => 200, 'height' => 200],
+                'news_thumb' => ['width' => 200, 'height' => 200, 'bg_color' => '000'],
+            ],
+        ],
+    ];
+}
+```
+
+#### II. Via array configuration by defining class and its static methods for path/URL generation
+
+```php
+/**
+ * @inheritdoc
+ */
+public function behaviors()
+{
+    return [
+        [
+            'class' => \mohorev\file\UploadImageBehavior::class,
+            'attribute' => 'image',
+            'scenarios' => ['insert', 'update'],
+            'placeholder' => '@app/modules/user/assets/images/userpic.jpg',
+            'path' => [UserProfile::class, 'buildAvatarPath'],
+            'url' => [UserProfile::class, 'buildAvatarUrl'],
+            'thumbs' => [
+                'thumb' => ['width' => 400, 'quality' => 90],
+                'preview' => ['width' => 200, 'height' => 200],
+                'news_thumb' => ['width' => 200, 'height' => 200, 'bg_color' => '000'],
+            ],
+        ],
+    ];
+}
+
+/**
+ * Define two static methos in your model for path and URL generation
+ */ 
+/**
+ * @param \app\models\UserProfile|\yii\db\ActiveRecord $profile
+ * @return string
+ */
+public static function buildAvatarPath(UserProfile $model)
+{
+    $basePath = '@webroot/upload/profiles/';
+    $path = implode('/', array_slice(str_split(md5($model->id), 2), 0, 2));
+
+    return $basePath . $path;
+}
+
+/**
+ * @param \app\models\UserProfile|\yii\db\ActiveRecord $profile
+ * @return string
+ */
+public static function buildAvatarUrl(UserProfile $model)
+{
+    $baseUrl = '@web/upload/profiles/';
+    $path = implode('/', array_slice(str_split(md5($model->id), 2), 0, 2));
+
+    return $baseUrl . $path;
+}
+```  
+
+### Usage in views
+
+Example:
 
 ```php
 <?php $form = ActiveForm::begin(['options' => ['enctype' => 'multipart/form-data']]); ?>
diff --git a/composer.json b/composer.json
index 72e17f7..54ee886 100644
--- a/composer.json
+++ b/composer.json
@@ -1,18 +1,22 @@
 {
-    "name": "mohorev/yii2-upload-behavior",
+    "name": "maxodrom/yii2-upload-behavior",
     "description": "Upload behavior for Yii 2",
     "keywords": ["yii2", "extension", "behavior", "file", "image", "upload", "resize", "thumb"],
-    "homepage": "https://github.com/mohorev/yii2-upload-behavior",
+    "homepage": "https://github.com/maxodrom/yii2-upload-behavior",
     "type": "yii2-extension",
     "license": "BSD-3-Clause",
     "support": {
-        "issues": "https://github.com/mohorev/yii2-upload-behavior/issues?state=open",
-        "source": "https://github.com/mohorev/yii2-upload-behavior"
+        "issues": "https://github.com/maxodrom/yii2-upload-behavior/issues?state=open",
+        "source": "https://github.com/maxodrom/yii2-upload-behavior"
     },
     "authors": [
         {
             "name": "Alexander Mohorev",
             "email": "dev.mohorev@gmail.com"
+        },
+        {
+            "name": "Max Alexandrov",
+            "email": "max@7u3.ru"
         }
     ],
     "repositories": [
diff --git a/src/UploadBehavior.php b/src/UploadBehavior.php
index 34d5978..a794ba6 100644
--- a/src/UploadBehavior.php
+++ b/src/UploadBehavior.php
@@ -54,11 +54,55 @@ class UploadBehavior extends Behavior
      */
     public $scenarios = [];
     /**
-     * @var string the base path or path alias to the directory in which to save files.
+     * @var string|callable|array Base path or path alias to the directory in which to save files,
+     * or callable for setting up your custom path generation logic.
+     * If $path is callable, callback signature should be as follow and return a string:
+     *
+     * ```php
+     * function (\yii\db\ActiveRecord $model)
+     * {
+     *     // do something...
+     *     return $string;
+     * }
+     * ```
+     * If this property is set up as array, it should be, for example, like as follow ['\app\models\UserProfile', 'buildAvatarPath'],
+     * where first element is class name, while second is its static method that should be called for path generation.
+     *
+     * Example:
+     * ```php
+     * public static function buildAvatarPath(\yii\db\ActiveRecord $model)
+     * {
+     *      $basePath = '@webroot/upload/avatars/';
+     *      $suffix = implode('/', array_slice(str_split(md5($model->id), 2), 0, 2));
+     *      return $basePath . $suffix;
+     * }
+     * ```
      */
     public $path;
     /**
-     * @var string the base URL or path alias for this file
+     * @var string|callable|array Base URL or path alias for this file,
+     * or callable for setting up your custom URL generation logic.
+     * If $url is callable, callback signature should be as follow and return a string:
+     *
+     * ```php
+     * function (\yii\db\ActiveRecord $model)
+     * {
+     *     // do something...
+     *     return $string;
+     * }
+     * ```
+     * If this property is set up as array, it should be, for example, like as follow ['\app\models\UserProfile', 'buildAvatarUrl'],
+     * where first element is class name, while second is its static method that should be called for URL generation.
+     *
+     * Example:
+     * ```php
+     * public static function buildAvatarUrl(\yii\db\ActiveRecord $model)
+     * {
+     *      $baseUrl = '@web/upload/avatars/';
+     *      $suffix = implode('/', array_slice(str_split(md5($model->id), 2), 0, 2));
+     *      return $baseUrl . $suffix;
+     * }
+     * ```
      */
     public $url;
     /**
@@ -177,7 +221,7 @@ public function beforeSave()
 
     /**
      * This method is called at the end of inserting or updating a record.
-     * @throws \yii\base\InvalidArgumentException
+     * @throws \yii\base\Exception
      */
     public function afterSave()
     {
@@ -210,6 +254,7 @@ public function afterDelete()
      * @param string $attribute
      * @param boolean $old
      * @return string|null the file path.
+     * @throws \yii\base\InvalidConfigException
      */
     public function getUploadPath($attribute, $old = false)
     {
@@ -225,6 +270,7 @@ public function getUploadPath($attribute, $old = false)
      * Returns file url for the attribute.
      * @param string $attribute
      * @return string|null
+     * @throws \yii\base\InvalidConfigException
      */
     public function getUploadUrl($attribute)
     {
@@ -252,15 +298,23 @@ protected function resolvePath($path)
     {
         /** @var BaseActiveRecord $model */
         $model = $this->owner;
-        return preg_replace_callback('/{([^}]+)}/', function ($matches) use ($model) {
-            $name = $matches[1];
-            $attribute = ArrayHelper::getValue($model, $name);
-            if (is_string($attribute) || is_numeric($attribute)) {
-                return $attribute;
-            } else {
-                return $matches[0];
-            }
-        }, $path);
+        if (is_string($path)) {
+            return preg_replace_callback('/{([^}]+)}/', function ($matches) use ($model) {
+                $name = $matches[1];
+                $attribute = ArrayHelper::getValue($model, $name);
+                if (is_string($attribute) || is_numeric($attribute)) {
+                    return $attribute;
+                } else {
+                    return $matches[0];
+                }
+            }, $path);
+        } elseif (is_callable($path) || is_array($path)) {
+            return call_user_func($path, $model);
+        } else {
+            throw new InvalidArgumentException(
+                '$path argument must be a string, array or callable: ' . gettype($path) . ' given.'
+            );
+        }
     }
 
     /**
diff --git a/src/UploadImageBehavior.php b/src/UploadImageBehavior.php
index c2417dc..36a459f 100644
--- a/src/UploadImageBehavior.php
+++ b/src/UploadImageBehavior.php
@@ -128,7 +128,8 @@ protected function afterUpload()
     }
 
     /**
-     * @throws \yii\base\InvalidArgumentException
+     * @throws \yii\base\Exception
+     * @throws \yii\base\InvalidConfigException
      */
     protected function createThumbs()
     {
@@ -161,6 +162,7 @@ protected function createThumbs()
      * @param string $profile
      * @param boolean $old
      * @return string
+     * @throws \yii\base\InvalidConfigException
      */
     public function getThumbUploadPath($attribute, $profile = 'thumb', $old = false)
     {
@@ -177,6 +179,8 @@ public function getThumbUploadPath($attribute, $profile = 'thumb', $old = false)
      * @param string $attribute
      * @param string $profile
      * @return string|null
+     * @throws \yii\base\Exception
+     * @throws \yii\base\InvalidConfigException
      */
     public function getThumbUploadUrl($attribute, $profile = 'thumb')
     {