表单token
<input type="hidden" name="_token" value="{{ csrf_token() }}"/>
表单错误提示
@if( $errors->any())
<ul>
@foreach($errors->all() as $error)
<li>{{ $error }}</li>
@endforeach
</ul>
@endif
原文：http://www.cnblogs.com/fenle/p/4740840.html