add uuid setter

src/Eloquent/Concerns/UsesUUID.php

@@ -23,10 +23,7 @@ public static function bootUsesUUID(): void
                 return;
             }
 
-            $model->setAttribute(
-                $model->getUuidName(),
-                static::generateUniqueUuid()
-            );
+            $model->setUuid(static::generateUniqueUuid());
         });
     }
 
@@ -61,6 +58,16 @@ public function scopeByUuid(Builder $query, $uuid): Builder
         throw new InvalidArgumentException('The UUID has to be of type string, array or null.');
     }
 
+    /**
+     * @param string|UuidInterface $uuid
+     *
+     * @return Model
+     */
+    public function setUuid($uuid): Model
+    {
+        return $this->setAttribute($this->getUuidName(), strval($uuid));
+    }
+
     public function getUuid(): ?string
     {
         return $this->getAttribute($this->getUuidName());

tests/UsesUuidTest.php

@@ -47,9 +47,8 @@ public function it_does_not_generate_uuid_on_creating_when_uuid_attribute_is_val
     {
         $uuid = Str::uuid()->toString();
 
-        $post = PostUuidAttribute::create([
-            'uuid' => $uuid,
-        ]);
+        $post = new PostUuidAttribute();
+        $post->setUuid($uuid)->save();
 
         static::assertIsString($post->getUuid());
         static::assertTrue(Uuid::isValid($post->uuid));

tests/database/migrations/2020_02_15_000000_create_posts_table.php

@@ -10,7 +10,7 @@ public function up(): void
     {
         Schema::create('posts', static function (Blueprint $table): void {
             $table->bigIncrements('id');
-            $table->uuid('uuid');
+            $table->uuid('uuid')->unique();
             $table->timestamps();
         });
     }