我們可以利用Form Request來(lái)封裝表單驗(yàn)證代碼，從而精簡(jiǎn)Controller中的代碼邏輯，使其專注于業(yè)務(wù)。而獨(dú)立出去的表單驗(yàn)證邏輯可以復(fù)用到其它請(qǐng)求中，看過(guò)幾篇文章，大多都是講怎么創(chuàng)建Request，表面看起來(lái)是將邏輯與業(yè)務(wù)分離了，但是沒(méi)有做到復(fù)用，一個(gè)業(yè)務(wù)就得新建一個(gè)Request類實(shí)在太累，索性這里我將項(xiàng)目全部的表單驗(yàn)證放在一個(gè)Request類里，實(shí)現(xiàn)高度可復(fù)用，下面是具體實(shí)現(xiàn)。

首先創(chuàng)建Request

php artisan make:request CreateUserRequest

CreateUserRequest代碼塊?

 1 <?php
 2 
 3 namespace App\Http\Requests;
 4 
 5 use App\Http\Requests\Request;
 6 
 7 class CreateUserRequest extends Request
 8 {
 9         //驗(yàn)證規(guī)則可自己添加需要驗(yàn)證的字段
10     protected $rules = [    
11         'Student.userName' => 'required|between:2,4',
12         'Student.userAge' => 'required|integer',
13         'Student.userSex' => 'required|integer',
14         'Student.addr' => 'required',
15     ];
16     //這里我只寫(xiě)了部分字段，可以定義全部字段
17     protected $strings_key = [
18         'Student.userName' => '用戶名',
19         'Student.userAge' => '年齡',
20         'Student.userSex' => '性別',
21         'Student.addr' => '地址',
22     ];
23     //這里我只寫(xiě)了部分情況，可以按需定義
24     protected $strings_val = [
25         'required'=> '為必填項(xiàng)',
26         'min'=> '最小為:min',
27         'max'=> '最大為:max',
28         'between'=> '長(zhǎng)度在:min和:max之間',
29         'integer'=> '必須為整數(shù)',
30         'sometimes'=> '',
31     ];
32 
33     /**
34      * Determine if the user is authorized to make this request.
35      *
36      * @return bool
37      */
38     public function authorize()
39     {
40         return true;//修改為true
41     }
42 
43     /**
44      * Get the validation rules that apply to the request.
45      *
46      * @return array
47      */
48     public function rules()
49     {
50 
51         $rules = $this->rules;
52         // 根據(jù)不同的情況, 添加不同的驗(yàn)證規(guī)則
53         if (Request::getPathInfo() == '/save')//如果是save方法
54         {
55             $rules['Student.addr'] = 'sometimes';
56         }
57         if (Request::getPathInfo() == '/edit')//如果是edit方法
58         {
59             $rules['Student.addr'] = 'required|min:5';
60         }
61         return $rules;        
62 
63     }
64   //返回給前臺(tái)的錯(cuò)誤信息
65     public function messages(){
66         $rules = $this->rules();
67         $k_array = $this->strings_key;
68         $v_array = $this->strings_val;
69         foreach ($rules as $key => $value) {
70             $new_arr = explode('|', $value);//分割成數(shù)組
71             foreach ($new_arr as $k => $v) {
72                 $head = strstr($v,':',true);//截取:之前的字符串
73                 if ($head) {$v = $head;}
74                 $array[$key.'.'.$v] = $k_array[$key].$v_array[$v];                  
75             }
76         }
77         return $array;
78     }
79 }

控制器具體方法

 1     /**
 2      * Show the form for creating a new resource.
 3      *
 4      * @return \Illuminate\Http\Response
 5      */
 6     public function save(\App\Http\Requests\CreateUserRequest $request)
 7     {
 8             //這里會(huì)自動(dòng)調(diào)用表單驗(yàn)證
 9             //驗(yàn)證成功后繼續(xù)向下執(zhí)行
10             $data = $request->input('Student');
11             if(User::create($data)){
12                return redirect('/')->with('success', '添加成功!');
13             }else{
14                return redirect('/create')->with('error', '添加失敗!'); 
15             }
16     }

對(duì)應(yīng)的模板文件

 1 <form class="form-horizontal" method="post" action="save">
 2     <div class="form-group">
 3         <label for="name" class="col-sm-2 control-label">姓名</label>
 4         {!! csrf_field() !!}
 5         <div class="col-sm-5">
 6             <input type="text" class="form-control" id="name" name="Student[userName]" placeholder="請(qǐng)輸入學(xué)生姓名" value="{{ old('Student')['userName']}}">
 7         </div>
 8         <div class="col-sm-5">
 9             <p class="form-control-static text-danger">{{ $errors->first('Student.userName') }}</p>
10         </div>
11     </div>
12     <div class="form-group">
13         <label for="age" class="col-sm-2 control-label">年齡</label>
14 
15         <div class="col-sm-5">
16             <input type="text" class="form-control" id="age" name="Student[userAge]" placeholder="請(qǐng)輸入學(xué)生年齡" value="{{ old('Student')['userAge']}}">
17         </div>
18         <div class="col-sm-5">
19             <p class="form-control-static text-danger">{{$errors->first('Student.userAge')}}</p>
20         </div>
21     </div>
22     <div class="form-group">
23         <label for="age" class="col-sm-2 control-label">地址</label>
24 
25         <div class="col-sm-5">
26             <input type="text" class="form-control" id="addr" name="Student[addr]" placeholder="請(qǐng)輸?shù)刂? >
27         </div>
28         <div class="col-sm-5">
29             <p class="form-control-static text-danger">{{$errors->first('Student.addr')}}</p>
30         </div>
31     </div>                        
32     <div class="form-group">
33         <label class="col-sm-2 control-label">性別</label>
34 
35         <div class="col-sm-5">
36             <label class="radio-inline">
37                 <input type="radio" name="Student[userSex]" value="1" > 未知
38             </label>
39             <label class="radio-inline">
40                 <input type="radio" name="Student[userSex]" value="2"> 男
41             </label>
42 ![QQ截圖20170613152555.png](http://upload-images./upload_images/2825702-f008b65789a425f4.png?imageMogr2/auto-orient/strip|imageView2/2/w/1240)
43 
44             <label class="radio-inline">
45                 <input type="radio" name="Student[userSex]" value="3"> 女
46             </label>
47         </div>
48         <div class="col-sm-5">
49             <p class="form-control-static text-danger">{{ $errors->first('Student.userSex') }}</p>
50         </div>
51     </div>
52     <div class="form-group">
53         <div class="col-sm-offset-2 col-sm-10">
54             <button type="submit" class="btn btn-primary">提交</button>
55         </div>
56     </div>
57 </form>

效果展示

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寫(xiě)在最后

通過(guò)文本可以看到, Form Requests 對(duì)于簡(jiǎn)化表單請(qǐng)求的數(shù)據(jù)校驗(yàn)是非常強(qiáng)大和方便的.這里我做了一些修改，使得rules()能夠可復(fù)用且只新增一個(gè)Request。如果有更好的解決方法，歡迎留言。

轉(zhuǎn)載：https://www.jianshu.com/p/0225e63454e8

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