#79 Rendering of errors for embedded MultipleInput + update changelog

Author: unclead

CHANGELOG.md

@@ -4,6 +4,8 @@ Yii2 multiple input change log
 1.2.20 in development
 ---------------------
 
+- #79 Added support for embedded MultipleInput widget (unclead, execut)
+
 1.2.19
 ------
 

README.md

@@ -22,6 +22,7 @@ Contents:
  - [Ajax loading of a widget](#ajax-loading)
  - [Use of a widget's placeholder](#using-placeholder)
  - [Custom index of the row](#custom-index)
+ - [Embedded MultipleInput widget](#enbedded)
 - [Javascript Events](#javascript-events)
 - [Renderers](#renderers)
 
@@ -447,6 +448,10 @@ as in the example below:
 ```
 
 
+### Embedded MultipleInput widget <a id="embedded"></a>
+
+TBD
+
 ## JavaScript events
 This widget has following events:
  - `afterInit`: triggered after initialization

examples/views/multiple-input.php

@@ -14,7 +14,7 @@
 ?>
 
 <?php $form = ActiveForm::begin([
-    'enableAjaxValidation'      => false,
+    'enableAjaxValidation'      => true,
     'enableClientValidation'    => false,
     'validateOnChange'          => false,
     'validateOnSubmit'          => true,

src/MultipleInputColumn.php

@@ -53,7 +53,7 @@ public function getElementName($index, $withPrefix = true)
         $elementName = $this->isRendererHasOneColumn()
             ? '[' . $this->name . '][' . $index . ']'
             : '[' . $index . '][' . $this->name . ']';
-        
+
         $prefix = $withPrefix ? $this->getInputNamePrefix() : '';
 
         return  $prefix . $elementName;
@@ -122,4 +122,27 @@ public function getFirstError($index)
 
         return null;
     }
+
+    /**
+     * @inheritdoc
+     */
+    protected function renderWidget($type, $name, $value, $options)
+    {
+        // Extend options in case of rendering embedded MultipleInput
+        // We have to pass to the widget original model and attribute to be able get first error from model
+        // for embedded widget.
+        if ($type === MultipleInput::class && strpos($name, $this->renderer->getIndexPlaceholder()) === false) {
+            $model = $this->context->model;
+
+            $search = sprintf('%s[%s]', $model->formName(), $this->context->attribute);
+            $replace = $this->context->attribute;
+
+            $attribute = str_replace($search, $replace, $name);
+
+            $options['model'] = $model;
+            $options['attribute'] = $attribute;
+        }
+
+        return parent::renderWidget($type, $name, $value, $options);
+    }
 }

src/renderers/TableRenderer.php

@@ -60,7 +60,7 @@ public function renderHeader()
         }
 
         if ($this->limit === null || ($this->limit >= 1 && $this->limit !== $this->min)) {
-            $button = $this->min === 0 || $this->addButtonPosition === self::POS_HEADER ? $this->renderAddButton() : '';
+            $button = $this->min === 0 || $this->isAddButtonPositionHeader() ? $this->renderAddButton() : '';
 
             $cells[] = Html::tag('th', $button, [
                 'class' => 'list-cell__button'
@@ -70,14 +70,22 @@ public function renderHeader()
         return Html::tag('thead', Html::tag('tr', implode("\n", $cells)));
     }
 
+    /**
+     * @return bool
+     */
+    private function isAddButtonPositionHeader()
+    {
+        return $this->addButtonPosition === self::POS_HEADER;
+    }
+
     /**
      * Check that at least one column has a header.
      *
      * @return bool
      */
     private function hasHeader()
     {
-        if ($this->min === 0) {
+        if ($this->min === 0 || $this->isAddButtonPositionHeader()) {
             return true;
         }