Adjustments for correct work with AR relations

Author: unclead

src/MultipleInput.php

@@ -108,6 +108,12 @@ class MultipleInput extends InputWidget
      */
     public $rendererClass;
 
+    /**
+     * @var bool whether the widget is embedded or not.
+     * @internal this property is used for internal purposes. Do not use it in your code. 
+     */
+    public $isEmbedded;
+
     /**
      * Initialization.
      *
@@ -117,6 +123,7 @@ public function init()
     {
         $this->guessColumns();
         $this->initData();
+
         parent::init();
     }
 

src/MultipleInputColumn.php

@@ -49,13 +49,20 @@ public function getElementName($index, $withPrefix = true)
         if (is_null($index)) {
             $index = '{' . $this->renderer->getIndexPlaceholder() . '}';
         }
-        
+
         $elementName = $this->isRendererHasOneColumn()
             ? '[' . $this->name . '][' . $index . ']'
             : '[' . $index . '][' . $this->name . ']';
 
-        $prefix = $withPrefix ? $this->getInputNamePrefix() : '';
-        
+        if (!$withPrefix) {
+            return $elementName;
+        }
+
+        $prefix = $this->getInputNamePrefix();
+        if ($this->context->isEmbedded && strpos($prefix, $this->context->name) === false) {
+            $prefix = $this->context->name;
+        }
+
         return  $prefix . $elementName;
     }
 
@@ -147,6 +154,12 @@ protected function renderWidget($type, $name, $value, $options)
 
             $options['model'] = $model;
             $options['attribute'] = $attribute;
+
+            // Remember current name and mark the widget as embedded to prevent
+            // generation of wrong prefix in case when column is associated with AR relation
+            // @see https://github.com/unclead/yii2-multiple-input/issues/92
+            $options['name'] = $name;
+            $options['isEmbedded'] = true;
         }
 
         return parent::renderWidget($type, $name, $value, $options);

src/assets/src/js/jquery.multipleInput.js

@@ -138,7 +138,7 @@
                 // wait for initialization of ActiveForm a second
                 // If after a second system could not detect ActiveForm it means
                 // that widget is used without ActiveForm and we should just complete initialization of the widget
-                if (i > 10) {
+                if (form.length === 0 || i > 10) {
                     $wrapper.data('multipleInput').currentIndex = getCurrentIndex($wrapper);
                     isActiveFormEnabled = false;
 

src/assets/src/js/jquery.multipleInput.min.js

@@ -111,7 +111,7 @@ abstract class BaseRenderer extends Object implements RendererInterface
      * @var string
      */
     private $indexPlaceholder;
-    
+
     /**
      * @inheritdoc
      */
@@ -248,10 +248,29 @@ protected function registerAssets()
     {
         $view = $this->context->getView();
         MultipleInputAsset::register($view);
-        
-        $jsBefore = $this->collectJsTemplates();
+
+        $view = $this->context->getView();
+
+        $jsBefore= [];
+        if (is_array($view->js) && array_key_exists(View::POS_READY, $view->js)) {
+            foreach ($view->js[View::POS_READY] as $key => $js) {
+                $jsBefore[$key] = $js;
+            }
+        }
+
         $template = $this->prepareTemplate();
-        $jsTemplates = $this->collectJsTemplates($jsBefore);
+
+        $jsTemplates = [];
+        if (is_array($view->js) && array_key_exists(View::POS_READY, $view->js)) {
+            foreach ($view->js[View::POS_READY] as $key => $js) {
+                if (array_key_exists($key, $jsBefore)) {
+                    continue;
+                }
+
+                $jsTemplates[$key] = $js;
+                unset($view->js[View::POS_READY][$key]);
+            }
+        }
 
         $options = Json::encode([
             'id'                => $this->id,
@@ -272,25 +291,6 @@ protected function registerAssets()
      */
     abstract protected function prepareTemplate();
 
-
-    protected function collectJsTemplates($except = [])
-    {
-        $view = $this->context->getView();
-        $output = [];
-        if (is_array($view->js) && array_key_exists(View::POS_READY, $view->js)) {
-            foreach ($view->js[View::POS_READY] as $key => $js) {
-                if (array_key_exists($key, $except)) {
-                    continue;
-                }
-                if (preg_match('/^[^{]+{' . $this->getIndexPlaceholder() . '}.*$/m', $js) === 1) {
-                    $output[$key] = $js;
-                    unset($view->js[View::POS_READY][$key]);
-                }
-            }
-        }
-        return $output;
-    }
-
     /**
      * @return mixed
      */