feat: rule for the unique name for category and retailer

app/Nova/Category.php

@@ -24,7 +24,9 @@ public function fields(NovaRequest $request)
         return [
             Text::make('Name')
                 ->sortable()
-                ->rules('required', 'max:255', new isNameForCategoryAvaiable),
+                ->rules('required', 'max:255', new isNameForCategoryAvaiable)
+                ->creationRules('unique:categories,name')
+                ->updateRules('unique:categories,name,{{resourceId}}'),
         ];
     }
 

app/Nova/Retailer.php

@@ -23,7 +23,9 @@ public function fields(NovaRequest $request)
         return [
             Text::make('Name')
                 ->sortable()
-                ->rules('required', 'max:255'),
+                ->rules('required', 'max:255')
+                ->creationRules('unique:retailers,name')
+                ->updateRules('unique:retailers,name,{{resourceId}}'),
         ];
     }