Adjust the code and update README

Author: unclead

CHANGELOG.md

@@ -4,8 +4,8 @@ Yii2 multiple input change log
 1.2.17 in development
 ---------------------
 
-- Enh: increased default value for the property `limit`
-- Added support of associative array in data
+- Enh: increased default value for the property `limit` (ivansal)
+- Enh: Added support of associative array in data (ivansal)
 
 1.2.16
 ------
@@ -143,4 +143,4 @@ Yii2 multiple input change log
 1.0.0
 -----
 
-first stable release
+first stable release

README.md

@@ -21,6 +21,7 @@ Contents:
  - [Guess column title](#guess-column-title)
  - [Ajax loading of a widget](#ajax-loading)
  - [Use of a widget's placeholder](#using-placeholder)
+ - [Custom index of the row](#custom-index)
 - [Javascript Events](#javascript-events)
 - [Renderers](#renderers)
 
@@ -417,6 +418,34 @@ JS
     ?>
 ```
 
+### Custom index of the row <a id="custom-index"></a>
+
+Assume that you want to set specific index for each row. In this case you can pass the `data` attribute as associative array
+as in the example below:
+
+```php
+    <?= $form->field($model, 'field')->widget(MultipleInput::className(), [
+            'allowEmptyList' => false,
+            'data' => [
+                3 => [
+                    'day'       => '27.02.2015',
+                    'user_id'   => 31,
+                    'priority'  => 1,
+                    'enable'    => 1
+                ],
+
+                'some-key' => [
+                    'day'       => '27.02.2015',
+                    'user_id'   => 33,
+                    'priority'  => 2,
+                    'enable'    => 0
+                ],
+            ]
+
+    ...
+
+```
+
 
 ## JavaScript events
 This widget has following events:

src/renderers/TableRenderer.php

@@ -117,11 +117,13 @@ protected function renderBody()
             if ($this->min === $this->limit && $cnt < $this->limit) {
                 $cnt = $this->limit;
             }
-            $keys = array_keys($this->data);
+            
+            $indices = array_keys($this->data);
+
             for ($i = 0; $i < $cnt; $i++) {
-                $key = ArrayHelper::getValue($keys, $i, $i);
-                $item = ArrayHelper::getValue($this->data, $key, null);
-                $rows[] = $this->renderRowContent($key, $item);
+                $index = ArrayHelper::getValue($indices, $i, $i);
+                $item = ArrayHelper::getValue($this->data, $index, null);
+                $rows[] = $this->renderRowContent($index, $item);
             }
         } elseif ($this->min > 0) {
             for ($i = 0; $i < $this->min; $i++) {