如何从 Laravel 5.6 中的控制器将数据放入 app.blade.php

How put data in app.blade.php from controller in Laravel 5.6

我需要将一些来自控制器的动态数据放入app.blade.php,但我找不到任何控制器。我应该在哪里做这个?谢谢

您需要从任何控制器加载视图,例如。 HomeController。它可以加载一个视图文件,例如 home.blade.php。它通常扩展 app.blade.php

因此您可以将数据从 HomeController 传递到视图。

    class HomeController extends Controller
    {
        /**
         * Show the application dashboard.
         *
         * @return \Illuminate\Contracts\Support\Renderable
         */
        public function index(Request $request)
        {
            return view('home', ['foo' => $request->session()->get('key');
] );
        }
    }

home.blade.php

@extends('layouts.app')

@section('content')
<div class="container">
    <div class="row justify-content-center">
        <div class="col-md-8">
            <div class="card">
                <div class="card-header">Dashboard</div>

                <div class="card-body">
                    @if (session('status'))
                        <div class="alert alert-success" role="alert">
                            {{ session('status') }}
                        </div>
                    @endif

                    You are logged in!
                </div>
            </div>
        </div>
    </div>
</div>
@endsection

app.blade.php

<!doctype html>
<html lang="{{ str_replace('_', '-', app()->getLocale()) }}">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <!-- CSRF Token -->
    <meta name="csrf-token" content="{{ csrf_token() }}">

    <title>{{ config('app.name', 'Laravel') }}</title>

    <!-- Scripts -->
    <script src="{{ asset('js/app.js') }}" defer></script>

    <!-- Fonts -->
    <link rel="dns-prefetch" href="//fonts.gstatic.com">
    <link href="https://fonts.googleapis.com/css?family=Nunito" rel="stylesheet">

    <!-- Styles -->
    <link href="{{ asset('css/app.css') }}" rel="stylesheet">
</head>
<body>
    <div id="app">

        <div> {{$foo}} </div>

        <main class="py-4">
            @yield('content')
        </main>
    </div>
</body>
</html>