Merge pull request #29 from okumurakengo/feature/value-empty-string-a…

…llowed

empty string allowed for value column

src/ConfigController.php

@@ -101,7 +101,11 @@ public function form()
 
         $form->display('id', 'ID');
         $form->text('name')->rules('required');
-        $form->textarea('value')->rules('required');
+        if (config('admin.extensions.config.valueEmptyStringAllowed', false)) {
+            $form->textarea('value');
+        } else {
+            $form->textarea('value')->rules('required');
+        }
         $form->textarea('description');
 
         $form->display('created_at');

src/ConfigModel.php

@@ -19,4 +19,18 @@ public function __construct($attributes = [])
 
         $this->setTable(config('admin.extensions.config.table', 'admin_config'));
     }
+
+    /**
+     * Set the config's value.
+     *
+     * @param string|null $value
+     */
+    public function setValueAttribute($value = null)
+    {
+        if (config('admin.extensions.config.valueEmptyStringAllowed', false)) {
+            $this->attributes['value'] = is_null($value) ? '' : $value;
+        } else {
+            $this->attributes['value'] = $value;
+        }
+    }
 }