[7.x] Add helper for on update cascade (#33522)

* add helper for on update cascade

* Update ForeignKeyDefinition.php

Co-authored-by: Taylor Otwell <[email protected]>

Author: amir9480

src/Illuminate/Database/Schema/ForeignKeyDefinition.php

@@ -14,6 +14,16 @@
  */
 class ForeignKeyDefinition extends Fluent
 {
+    /**
+     * Indicate that updates should cascade.
+     *
+     * @return $this
+     */
+    public function cascadeOnUpdate()
+    {
+        return $this->onUpdate('cascade');
+    }
+
     /**
      * Indicate that deletes should cascade.
      *

tests/Database/DatabaseMySqlSchemaGrammarTest.php

@@ -388,6 +388,13 @@ public function testAddingForeignKey()
 
         $this->assertCount(1, $statements);
         $this->assertSame('alter table `users` add constraint `users_foo_id_foreign` foreign key (`foo_id`) references `orders` (`id`) on delete cascade', $statements[0]);
+
+        $blueprint = new Blueprint('users');
+        $blueprint->foreign('foo_id')->references('id')->on('orders')->cascadeOnUpdate();
+        $statements = $blueprint->toSql($this->getConnection(), $this->getGrammar());
+
+        $this->assertCount(1, $statements);
+        $this->assertSame('alter table `users` add constraint `users_foo_id_foreign` foreign key (`foo_id`) references `orders` (`id`) on update cascade', $statements[0]);
     }
 
     public function testAddingIncrementingID()