1.运用cmd在项目根目录下创建路由组
php artisan make:controller queryController --resource
1.1数据库信息（student）
CREATE TABLE `student` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(225) NOT NULL, `age` tinyint(3) unsigned NOT NULL, `sex` tinyint(3) unsigned NOT NULL, `created_at` int(11) NOT NULL, `updated_at` int(11) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM AUTO_INCREMENT=8 DEFAULT CHARSET=utf8;
2.路由组信息如下
3.编写路由组中的 index和store方法（1是显示首页，2是模糊查询）运用的是orWhere();添加多条件查询
1 <?php
2
3 namespace App\Http\Controllers;
4
5 use Illuminate\Http\Request;
6 use think\View;
7
8 class queryController extends Controller
9 {
10 /**
11 * Display a listing of the resource.
12 *
13 * @return \Illuminate\Http\Response
14 */
15 public function index()
16 {
17 //显示查询界面
18 $data = \DB::table('student')->get();
19 return view('query', compact('data'));
20 }
21
22 /**
23 * Show the form for creating a new resource.
24 *
25 * @return \Illuminate\Http\Response
26 */
27 public function create()
28 {
29 echo '创建';
30 }
31
32 /**
33 * Store a newly created resource in storage.
34 *
35 * @param \Illuminate\Http\Request $request
36 * @return \Illuminate\Http\Response
37 */
38 public function store(Request $request)
39 {
40 //返回请求结果界面
41 $input = $request->get('key');
42 $data = \DB::table('student')->where('id', 'like', '%' . $input . '%')
43 ->orWhere('name', 'like', '%' . $input . '%')->orWhere('age', 'like', '%' . $input . '%')->get();
44 if(!is_null($data)){
45 return view('query', compact('data'));
46 }else{
47 return back()->with(['info'=>'查询为空']);
48 }
49 }
50
51 /**
52 * Display the specified resource.
53 *
54 * @param int $id
55 * @return \Illuminate\Http\Response
56 */
57 public function show($id)
58 {
59 //
60 }
61
62 /**
63 * Show the form for editing the specified resource.
64 *
65 * @param int $id
66 * @return \Illuminate\Http\Response
67 */
68 public function edit($id)
69 {
70 //
71 }
72
73 /**
74 * Update the specified resource in storage.
75 *
76 * @param \Illuminate\Http\Request $request
77 * @param int $id
78 * @return \Illuminate\Http\Response
79 */
80 public function update(Request $request, $id)
81 {
82 //
83 }
84
85 /**
86 * Remove the specified resource from storage.
87 *
88 * @param int $id
89 * @return \Illuminate\Http\Response
90 */
91 public function destroy($id)
92 {
93 //
94 }
95 }
多条件模糊查询
4.视图层代码
1 <!doctype html>
2 <html lang="en">
3 <head style="background-color: lightpink">
4 <meta charset="UTF-8">
5 <meta name="viewport"
6 content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
7 <meta http-equiv="X-UA-Compatible" content="ie=edge">
8 <script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js">
9 </script>
10 <title>多条件模糊查询</title>
11 </head>
12 <body>
13 <form action="{{route('query.store')}}" method="post">
14 {{@csrf_field()}}
15 <input type="text"size="20px" name="key" placeholder="请输入id,用户名，年龄其一">
16 <input type="submit" value="搜索" >
17 </form>
18
19 <table border="1px solid" cellspacing="0" cellpadding="0"style=" margin-top: 50px;width: auto;">
20 <tr>
21 <th>id</th>
22 <th>用户名</th>
23 <th>年龄</th>
24 <th>性别</th>
25 <th>创建时间</th>
26 <th>更新时间</th>
27 </tr>
28 @foreach($data as $values)
29 <tr>
30 <td>{{$values->id}}</td>
31 <td>{{$values->name}}</td>
32 <td>{{$values->age}}</td>
33 <td>
34 @if(($values->sex==1))男
35 @else女
36 @endif
37 </td>
38
39 <td>{{date('Y-m-d H:i:s',$values->created_at)}}</td>
40 <td>{{date('Y-m-d H:i:s',$values->updated_at)}}</td>
41 </tr>
42 @endforeach
43 </table>
44 </body>
45
46 </html>
视图层
5.个人总结
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1.模板中post提交的时候注意 {{@csrf_field()}} 不要忘记了 2.想起了三种定位路由的方式 2.1 {{action('你的路由action')}} {{url('')}} {{route()}} 3.判断数据库信息返回是否为空：is_null(); empty()
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