going back to the old way of validating model data (Closes #728)

changelog.md

@@ -1,5 +1,7 @@
 ## Changelog
 
+- Bugfix: when validating all rules against all attributes for existing models, "exists" and "unique" rules would cause problems
+
 ### 4.14.0
 - New translations (hr, nb)
 - Bugfix: The Spanish translation had an issue with noun genders

src/Frozennode/Administrator/Config/Model/Config.php

@@ -327,7 +327,11 @@ public function save(\Illuminate\Http\Request $input, array $fields, array $acti
 		$this->fillModel($model, $input, $fields);
 
 		//validate the model
-		$validation = $this->validateData($model->getAttributes(), $this->getModelValidationRules(), $this->getModelValidationMessages());
+		$data = $model->exists ? $model->getDirty() : $model->getAttributes();
+		$rules = $this->getModelValidationRules();
+		$rules = $model->exists ? array_intersect_key($rules, $data) : $rules;
+		$messages = $this->getModelValidationMessages();
+		$validation = $this->validateData($data, $rules, $messages);
 
 		//if a string was kicked back, it's an error, so return it
 		if (is_string($validation)) return $validation;