Add: hasTranslation method

Author: jordyvanderhaegen

README.md

@@ -56,6 +56,19 @@ $post->title_nl
 $post->getTranslation('title', 'nl')
 ```
 
+To check if a translation exists, you may use the `hasTranslation` method:
+```php
+$post->title_en = 'Your first translation';
+$post->title_nl = '';
+$post->title_fr = null;
+
+$post->hasTranslation('title', 'en'); // returns true
+$post->hasTranslation('title', 'nl'); // returns false
+$post->hasTranslation('title', 'fr'); // returns false
+```
+
+In case you do not supply a locale, the current locale will be used.
+
 ### Using a fallback
 This package allows you to return the value of an attribute's `fallback_locale` defined in the `config/app.php` of your application.
 

src/UnderscoreTranslatable.php

@@ -42,6 +42,11 @@ public function getTranslationWithoutFallback(string $key, ?string $locale = nul
         return $this->getTranslation($key, $locale, false);
     }
 
+    public function hasTranslation(string $key, ?string $locale = null): bool
+    {
+        return ! empty($this->getTranslationWithoutFallback($key, $locale));
+    }
+
     public function setTranslation(string $key, string $locale, mixed $value): self
     {
         if ($this->hasSetMutator($key)) {

tests/UnderscoreTranslatableTest.php

@@ -142,6 +142,19 @@ public function it_can_get_a_translation_using_an_accessor()
         $this->assertEquals('test en', $post->field_with_accessor);
     }
 
+    /** @test */
+    public function it_can_check_if_it_has_a_translation()
+    {
+        $post = new Post();
+        $post->title_en = 'Test en';
+        $post->title_nl = '';
+        $post->title_fr = null;
+
+        $this->assertTrue($post->hasTranslation('title', 'en'));
+        $this->assertFalse($post->hasTranslation('title', 'nl'));
+        $this->assertFalse($post->hasTranslation('title', 'fr'));
+    }
+
     /** @test */
     public function it_can_set_a_translatable_attribute_using_a_method()
     {