add destroy attribute

Author: Piotr Krajewski

README.md

@@ -103,6 +103,26 @@ usage:
 ]);
 ```
 
+to delete nested row you should pass `_destroy` attribute:
+
+````
+\App\Post::findOrFail(1)->update([
+    'title' => 'Better text',
+
+    'option' => [
+        'info' => 'better info'
+    ],
+
+    'comments' => [
+        [
+            'id' => 2,
+            '_destroy' => true
+        ],
+    ]
+]);
+```
+
+
 ## Change log
 
 Please see [CHANGELOG](CHANGELOG.md) for more information on what has changed recently.

composer.json

@@ -5,7 +5,7 @@
     "keywords": [
         "Laravel", "Lumen", "Eloquent", "Nested Attributes"
     ],
-    "version": "0.0.4",
+    "version": "0.0.5",
     "homepage": "https://github.com/mits87/eloquent-nested-attributes",
     "license": "MIT",
     "authors": [

src/Traits/HasNestedAttributesTrait.php

@@ -19,6 +19,14 @@ trait HasNestedAttributesTrait
      */
     protected $acceptNestedAttributesFor = [];
 
+    /**
+     * Defined "destroy" key name
+     *
+     * @var string
+     */
+    protected $destroyNestedKey = '_destroy';
+
+
     /**
      * Get accept nested attributes
      *
@@ -80,7 +88,7 @@ public function save(array $options = [])
                 }
             } else if ($relation instanceof HasMany || $relation instanceof MorphMany) {
                 foreach ($stack as $params) {
-                    if (!$this->saveManyNestedAttributes($relation, $params)) {
+                    if (!$this->saveManyNestedAttributes($this->$methodName(), $params)) {
                         return false;
                     }
                 }
@@ -103,6 +111,9 @@ public function save(array $options = [])
     protected function saveNestedAttributes($relation, array $params)
     {
         if ($this->exists && $model = $relation->first()) {
+            if ($this->allowDestroyNestedAttributes($params)) {
+                return $model->delete();
+            }
             return $model->update($stack);
         } else if ($relation->create($stack)) {
             return true;
@@ -121,10 +132,25 @@ protected function saveManyNestedAttributes($relation, array $params)
     {
         if (isset($params['id']) && $this->exists) {
             $model = $relation->findOrFail($params['id']);
+
+            if ($this->allowDestroyNestedAttributes($params)) {
+                return $model->delete();
+            }            
             return $model->update($params);
         } else if ($relation->create($params)) {
             return true;
         }
         return false;
     }
+
+    /**
+     * Check can we delete nested data
+     *
+     * @param  array $params
+     * @return bool
+     */
+    protected function allowDestroyNestedAttributes(array $params)
+    {
+        return isset($params[$this->destroyNestedKey]) && (bool) $params[$this->destroyNestedKey] == true;
+    }
 }