Laravel 表单验证器的几种使用方法
1、使用控制器的 validate 方法进行参数验证
/** * 保存一篇新的博客文章。 * * @param Request $request * @return Response */ public function store(Request $request) { $this->validate($request, [ 'title' => 'required|unique:posts|max:255', 'body' => 'required', ]); // 文章内容是符合规则的,存入数据库 }
2、手动创建验证器实例进行验证
使用默认的验证信息
/** * 保存一篇新的博客文章。 * * @param Request $request * @return Response */ public function store(Request $request) { $rules = [ 'title' => 'required|unique:posts|max:255', 'body' => 'required', ]; $validator = Validator::make($request->all(), $rules); if ($validator->fails()) { return redirect('post/create')->withErrors($validator)->withInput(); } // 文章内容是符合规则的,存入数据库 }
使用自定义的验证信息
/** * 保存一篇新的博客文章。 * * @param Request $request * @return Response */ public function store(Request $request) { $rules = [ 'title' => 'required|unique:posts|max:255', 'body' => 'required', ]; $messages = [ 'title.required' => '请填写文章标题', 'title.unique' => '文章标题不能重复', 'title.max' => '文章标题不能超过255个字符', 'body.required' => '请填写文章内容', ]; $validator = Validator::make($request->all(), $rules, $messages); if ($validator->fails()) { return redirect('post/create')->withErrors($validator)->withInput(); } // 文章内容是符合规则的,存入数据库 }
3、创建表单请求进行验证
创建表单请求文件:php artisan make:request ExampleRequest
表单请求文件内容:
<?php namespace App\Http\Requests; use Illuminate\Contracts\Validation\Validator; use Illuminate\Foundation\Http\FormRequest; use Illuminate\Http\Exceptions\HttpResponseException; use Illuminate\Http\JsonResponse; class ExampleRequest extends FormRequest { /** * Determine if the user is authorized to make this request. * * @return bool */ public function authorize() { return true; } /** * Get the validation rules that apply to the request. * * @return array */ public function rules() { return [ 'title' => 'required|max:20', 'name' => ['required', new Uppercase()], ]; } /** * 获取已定义的验证规则的错误消息。 * * @return array */ public function messages() { return [ 'title.required' => 'A title is required', 'title.max' => 'The title may not be greater than 20 characters.', ]; } /** * 兼容 form 表单请求与 ajax 请求或者 json api 请求 * 验证失败,返回错误信息 * * @param Validator $validator * @throws */ protected function failedValidation(Validator $validator) { if ($this->wantsJson() || $this->ajax()) { throw new HttpResponseException( new JsonResponse([ 'code' => 500, 'msg' => $validator->errors()->first(), 'data' => new \stdClass() ]) ); } else { parent::failedValidation($validator); } } }
在控制器中使用 ExampleRequest
<?php namespace App\Http\Controllers; use App\Http\Controllers\Controller; use App\Http\Requests\ExampleRequest; class ExampleController extends Controller { public function valid(ExampleRequest $request) { $params = $request->all(); dd($params); } }
在laravel 表单验证中,常会遇到需要几个字段组合起来做唯一限制。
解决方案如下:
where[] = ['parentId','=',where[]=[′parentId ′,′ = ′,this->request->get('parentId')]; return [ 'menuTitle' => ['required', 'max:32','min:2',Rule::unique('admin_menu','menuTitle')->where(function($query)use($where){ $query->where($where)->whereNull('deleted_at'); })->ignore($id) ], 'menuTitleEn' => ['required', 'max:32','min:2',Rule::unique('admin_menu','menuTitleEn')->where(function($query)use($where){ $query->where($where)->whereNull('deleted_at'); })->ignore($id) ], 'menuRoute' => ['required',Rule::unique('admin_menu','menuRoute')->ignore($id)], 'menuIcon' => ['required', 'min:2','max:32'], 'routeName' => ['sometimes', 'min:2','max:32'], 'parentId' => ['required','numeric'], 'order'=>['sometimes','numeric'] ];
到此这篇关于laravel 表单验证实现多个字段组合后唯一的文章就介绍到这了,更多相关laravel 表单验证内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持!