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laravel blade模板引擎和中间件

home.php

<?php
namespace App\Http\Controllers;
use App\Http\Controllers\Controller;
use Illuminate\Support\Facades\DB;
use App\Article;
// 后台主页
class Home extends Controller{
    //模型
    public function mymodels(Article $article){
        $res = $article->get()->toArray();
        echo '<pre>';
        print_r($res);
    }
    // blade 模板引擎
    public function myblade(Article $article){
        $myage =18;
        $data['myage'] = $myage;
        $data['name'] = '<span style="font-size:20px;">小明</span>';
        $res = $article->get()->toArray();
        $data['res'] = $res;
        return view('myblade',$data);
    }
}

blade模板

<!DOCTYPE html>
<html>
<head>
    <title></title>
    <link rel="stylesheet" type="text/css" href="/layui/css/layui.css">
</head>
<body>
    <!---原生-->
    <?php if ($myage>=18){?>
        <div>已成年<?php echo $name ?></div>
    <div>已成年<?php echo htmlentities($name) ?></div>
    <?php }else{?>
    <div>未成年</div>    
    <?php }?>
    <!---blade模板-->
    @if($myage>=18)
    <div style="color:red">已成年{{$name}}</div>
    <div style="color:red">已成年{!!$name!!}</div>
    @else
    <div style="color:red">未成年</div>
    @endif
    <table class="layui-table">
        <thead>
            <tr><th>id</th><th>标题</th></tr>
        </thead>
    @foreach($res as $val)
    <tr>
        <td>{{$val['id']}}</td>
        <td>{{$val['title']}}</td>
    </tr>
    @endforeach
    </table>
    <table class="layui-table">
        <thead>
            <tr><th>id</th><th>标题</th></tr>
        </thead>
    @for($i=0;$i<count($res);$i++)
    <tr>
        <td>{{$res[$i]['id']}}</td>
        <td>{{$res[$i]['title']}}</td>
    </tr>
    @endfor
    </table>
    <table class="layui-table">
        <thead>
            <tr><th>id</th><th>标题</th></tr>
        </thead>
    <!---  while($val = array_pop($res))  --->
    @while($val = array_shift($res))
    <tr>
        <td>{{$val['id']}}</td>
        <td>{{$val['title']}}</td>
    </tr>
    @endwhile
    </table>
</body>
</html>

中间件

需要三步

第一步：创建文件

在powershell中执行

 php artisan make:middleware Mymiddle

执行后在laravel7\app\Http\Middleware中生成了Mymiddle.php。

第二步：注册

在laravel7\app\Http中有一个Kernel.php，在protected $routeMiddleware中加一行

'mymiddle' => \App\Http\Middleware\Mymiddle::class,

第三步：触发

修改路由，增加->middleware(‘mymiddle’)
例如：
修改前

Route::get('/dbmyblade','Home@myblade');

修改后

Route::get('/dbmyblade','Home@myblade')->middleware('mymiddle');

Correction status：Uncorrected

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