Add Filament support (#26)

Author: dvandal

README.md

@@ -35,7 +35,7 @@ But then you want to make sure each translation is unique for its language.
 
 That's where this package comes in to play.
 
-This package also supports [`spatie/nova-translatable`](https://github.com/spatie/nova-translatable/) in case you are using [Laravel Nova](https://nova.laravel.com/).
+This package also supports [`spatie/nova-translatable`](https://github.com/spatie/nova-translatable/) in case you are using [Laravel Nova](https://nova.laravel.com/) and [`filamentphp/spatie-laravel-translatable-plugin`](https://github.com/filamentphp/spatie-laravel-translatable-plugin) in case you are using [Filament](https://filamentphp.com/).
 
 ## ✅ Requirements
 
@@ -44,6 +44,7 @@ This package also supports [`spatie/nova-translatable`](https://github.com/spati
 -   [Laravel](https://laravel.com/) >= 6
 -   [spatie/laravel-translatable](https://github.com/spatie/laravel-translatable) ^4.4|^5.0
 -   [spatie/nova-translatable](https://github.com/spatie/nova-translatable/) ^3.0
+-   [filamentphp/spatie-laravel-translatable-plugin](https://github.com/filamentphp/spatie-laravel-translatable-plugin) ^3.0
 
 ## 📦 Installation
 
@@ -205,6 +206,26 @@ Text::make(__('Slug'), 'slug')
   ->updateRules('unique_translation:posts,slug,{{resourceId}}');
 ```
 
+### ☑️ Filament
+
+If you are using [Filament](https://filamentphp.com/) in combination with [`filamentphp/spatie-laravel-translatable-plugin`](https://github.com/filamentphp/spatie-laravel-translatable-plugin), then you can add the validation rule like this:
+
+```php
+TextInput::make('slug')
+  ->title(__('Slug'))
+  ->rules([
+    UniqueTranslationRule::for('posts', 'slug')
+  ])
+```
+
+```php
+TextInput::make('slug')
+  ->title(__('Slug'))
+  ->rules([
+    fn (Get $get) => UniqueTranslationRule::for('posts', 'slug')->ignore($get('id'))
+  ])
+```
+
 ## 🖥 Example
 
 Your existing `slug`  column (JSON) in a `posts` table:

src/UniqueTranslationValidator.php

@@ -20,10 +20,14 @@ class UniqueTranslationValidator
      * @return bool
      */
     public function validate($attribute, $value, $parameters, $validator)
-    {
-        list ($name, $locale) = $this->isNovaTranslation($attribute)
+    {		
+        list ($name, $locale) = $this->isNovaTranslation($attribute) 
             ? $this->getNovaAttributeNameAndLocale($attribute)
-            : $this->getArrayAttributeNameAndLocale($attribute);
+            : (
+				$this->isFilamentTranslation($attribute) 
+				? $this->getFilamentAttributeNameAndLocale($attribute) 
+				: $this->getArrayAttributeNameAndLocale($attribute)
+			);
 
         if ($this->isUnique($value, $name, $locale, $parameters)) {
             return true;
@@ -74,7 +78,7 @@ protected function isNovaTranslation($attribute)
     }
 
     /**
-     * Get the attribute name and locale of a Nova translation field.
+     * Get the attribute name and locale of a Filament translation field.
      *
      * @param string $attribute
      *
@@ -87,6 +91,32 @@ protected function getNovaAttributeNameAndLocale($attribute)
         return $this->getAttributeNameAndLocale($attribute, '_');
     }
 
+    /**
+     * Check if the attribute is a Filament translation field name.
+     *
+     * @param string $attribute
+     *
+     * @return bool
+     */
+    protected function isFilamentTranslation($attribute)
+    {
+        return strpos($attribute, 'data.') === 0;
+    }
+
+    /**
+     * Get the attribute name and locale of a Filament translation field.
+     *
+     * @param string $attribute
+     *
+     * @return array
+     */
+    protected function getFilamentAttributeNameAndLocale($attribute)
+    {
+        $attribute = str_replace('data.', '', $attribute);
+		@list($locale, $name) = @explode('.', $attribute);
+        return [$name, $locale];
+    }
+
     /**
      * Get the attribute name and locale of an array field.
      *
@@ -210,7 +240,7 @@ protected function isUnique($value, $name, $locale, $parameters)
         $query = $this->findTranslation($connection, $table, $column, $locale, $value);
         $query = $this->ignore($query, $ignoreColumn, $ignoreValue);
         $query = $this->addConditions($query, $this->getUniqueExtra($parameters));
-
+	
         $isUnique = $query->count() === 0;
 
         return $isUnique;