laravel 表单验证及错误消息输出

控制器 GoodsController.php

 public function store(Request $request)
    {
//        $input = Input::except('_token');
//        $input['art_time'] = time();
        $input = $request->all();

        $rules = [
            'title' => 'required',
            'price' => 'required|numeric',
            'brand' => 'required',
            'sum' => 'required|numeric',
            'weight' => 'required|numeric',
            'number' => 'required',
            'integral' => 'required|numeric',
            'keywords' => 'required',
            'description' => 'required',
            'contents' => 'required',
        ];
        $message = [
            'title.required' => '请输入商品名称！',
            'price' => [
                'required' => '请输入商品价格！',
                'numeric' => '商品价格必须为数字',
            ],
            'brand.required' => '请输入商品隶属那个品牌',
            'sum' => [
                'required' => '请输入商品价格！',
                'numeric' => '商品价格必须为数字',
            ],
            'weight' => [
                'required' => '请输入商品重量！',
                'numeric' => '商品价格必须为数字',
            ],
            'number.required' => '请输入商品编号！',
            'integral' => [
                'required' => '请输入商品重量！',
                'numeric' => '商品价格必须为数字',
            ],
            'keywords.required' => '请输入商品的所属关键词！',
            'description.required' => '请输入商品的基本信息描述！',
            'contents.required' => '请输入商品相关内容信息！',
        ];

        $validator = Validator::make($input, $rules, $message);

        if ($validator->passes()) {
            $goods = Goods::create(array_merge($request->all(), [
                'imgpath' => '/images/default_goods.png',
                $input['shelftime'] = Carbon::now(),
                'sale' => '5',
                'online' => 'on'
            ]));
            if ($goods) {
                return redirect('admin/goods');
            } else {
                return back()->with('errors', '商品添加失败，请稍后重试！');
            }

        } else {
            return back()->withErrors($validator);
        }
    }

模板create.blade.php

@if(count($errors)>0)
            <div class="mark">
                @if(is_object($errors))
                    @foreach($errors->all() as $error)
                        <p>{{$error}}</p>
                    @endforeach
                @else
                    <p>{{$errors}}</p>
                @endif
            </div>
        @endif

---

隐式扩展
默认情况下，被验证的属性如果没有提供或者验证规则为required而值为空，那么正常的验证规则，包括自定义扩展将不会执行。例如，unique规则将不会检验null值：

$rules = ['name' => 'unique'];
$input = ['name' => null];
Validator::make($input, $rules)->passes(); // true

http://laravelacademy.org/post/195.html
https://docs.golaravel.com/docs/4.2/validation/