为什么每次提交错误都会发生,我认为这是正确的
控制器:
public function create()
{
$author1['tambah_author'] = \DB::table('authors')->lists('username','id');
$author1['id_author'] = \DB::table('authors')->lists('id');
return View::make('article.add',$author1)->with('authors',$author1);
}
查看:
{{ Form::select('author',
array_merge(['' => 'Pilih Author'], $tambah_author),
$id_author,
array('class'=>'form-control')) }}
提交时会生成错误:
SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`laravel`.`articles`, CONSTRAINT `articles_ibfk_1` FOREIGN KEY (`author_id`) REFERENCES `authors` (`id`) ON DELETE CASCADE) (SQL: insert into `articles` (`judul`, `body`, `author_id`, `updated_at`, `created_at`) values (sadsadd, sadas, 2, 2016-07-01 12:44:54, 2016-07-01 12:44:54))
答案 0 :(得分:0)
您可以进行检查以确保有相应的作者。
public function store() {
$article = new Article();
$article->judul = Input::get('judul');
$article->body = Input::get('isi');
$article->author_id = Author::find(Input::get('author'))->id;
if (!$article->author_id) throw new Exception('not a valid author.');
$article->save();
return Redirect::to('article');
}