Respect "addButtonPosition" option when rendering the button

Author: unclead

src/MultipleInput.php

@@ -76,9 +76,9 @@ class MultipleInput extends InputWidget
     public $min;
 
     /**
-     * @var string|array position of add button. By default button is rendered in the row.
+     * @var string|array position of add button.
      */
-    public $addButtonPosition = self::POS_ROW;
+    public $addButtonPosition;
 
     /**
      * @var array|\Closure the HTML attributes for the table body rows. This can be either an array

src/TabularInput.php

@@ -69,9 +69,9 @@ class TabularInput extends Widget
     public $models;
 
     /**
-     * @var string|array position of add button. By default button is rendered in the row.
+     * @var string|array position of add button.
      */
-    public $addButtonPosition = self::POS_ROW;
+    public $addButtonPosition;
 
     /**
      * @var array|\Closure the HTML attributes for the table body rows. This can be either an array

src/renderers/BaseRenderer.php

@@ -182,6 +182,9 @@ private function prepareLimit()
 
     private function prepareButtons()
     {
+        if ($this->addButtonPosition === null || $this->addButtonPosition === []) {
+            $this->addButtonPosition = $this->min === 0 ? self::POS_HEADER : self::POS_ROW;
+        }
         if (!is_array($this->addButtonPosition)) {
             $this->addButtonPosition = (array) $this->addButtonPosition;
         }

src/renderers/TableRenderer.php

@@ -59,7 +59,7 @@ public function renderHeader()
         }
 
         if ($this->limit === null || ($this->limit >= 1 && $this->limit !== $this->min)) {
-            $button = $this->min === 0 || $this->isAddButtonPositionHeader() ? $this->renderAddButton() : '';
+            $button = $this->isAddButtonPositionHeader() ? $this->renderAddButton() : '';
 
             $cells[] = Html::tag('th', $button, [
                 'class' => 'list-cell__button'