Question

我正在学习laravel 5.2，并尝试按照视频教程制作cms项目。我创建了如下文件 -

应用程序/视图/作曲家/ InjectPages.php

namespace App\View\Composers;

use App\Page;
use Illuminate\View\View;

class InjectPages
{
    protected $pages;

    public function __construct(Page $pages)
    {
       $this->pages = $pages;
    }

    public function compose(View $view)
    {
        $pages = $this->pages->all()->toHierarchy();

        $view->with('pages', $pages);
    }
}

应用程序/提供者/ AppServiceProvider.php

public function boot()
{
    $this->app['view']->composer('layouts.frontend', Composers\InjectPages::class);
}

资源/视图/ welcome.blade.php

@extends('layouts.frontend')

@section('title', 'Welcome')

@section('heading', 'This is a heading')

@section('content')

    <h1>Hello World</h1>

@endsection

公共/主题/视图/布局/ frontend.blade.php

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <title>@yield('title') &mdash; Tuts24.com</title>

    <link rel="stylesheet" type="text/css" href="{{ theme('css/frontend.css') }}">
</head>
<body>
    <nav class="navbar navbar-default">
        <div class="container">
            <div class="navbar-header">
                <a class="navbar-brand">
                    <img src="{{ theme('images/logo.png') }}" alt="Tuts24.com">
                </a>
            </div>
            <ul class="nav navbar-nav">
                @include('partials.navigation')
            </ul>
        </div>
    </nav>

    <div class="container">
        <div class="row">
            <div class="col-md-12">
                @yield('content')
            </div>
        </div>
    </div>
</body>
</html>

公共/主题/视图/分音/ navigation.blade.php

@foreach($pages as $page)
<li class="{{ Request::is($page->uri_wildcard) ? 'active' : '' }} {{ count($page->children) ? ($page->isChild() ? 'dropdown-submenu' : 'dropdown') : '' }}">
    <a href="{{ url($page->uri) }}">
        {{ $page->title }}
        @if(count($page->children))
            <span class="caret {{ $page->child() ? 'right' : '' }}"></span>
        @endif
    </a>

    @if(count($page->children))
        <ul class="dropdown-menu">
            @include('partials.navigation', ['pages' => $page->children])
        </ul>
    @endif
</li>
@endforeach

但总是会出现以下错误。

Container.php第734行中的ErrorException：类App \ Providers \ Composers \ InjectPages不存在（查看：/path/to/project/resources/views/welcome.blade.php）

我不确定，这些信息是否足以为您找出错误。如果需要更多信息，请告诉我。期待你的回复。感谢。

更新 -

经过多次尝试回答后，我觉得以下文件也与此错误有关。这就是为什么我也要添加这个代码并共享我学习项目的Dropbox链接。

应用程序/视图/ ThemeViewFinder.php

<?php

namespace App\View;

use Illuminate\View\FileViewFinder;

class ThemeViewFinder extends FileViewFinder
{
protected $activeTheme;

protected $basePath;

public function setBasePath($path)
{
    $this->basePath = $path;
}

public function setActiveTheme($theme)
{
    $this->activeTheme = $theme;

    array_unshift($this->paths, $this->basePath.'/'.$theme.'/views');
}
}

Dropbox链接 https://www.dropbox.com/sh/v8n1qvix20hywmo/AABVcs8DqvEhI89lw98mbxbya?dl=0

Answer 1

试试这个：

composer('layouts.frontend', '\App\View\Composers\InjectPages::class');

此外，尝试运行composer dumpauto命令。

Answer 2

检查出来

text in the first <p>: '   Hello World'

或

composer('layouts.frontend', '\App\View\Composers\InjectPages');

Answer 3

尝试将以下代码添加到composer.json

中

<强> composer.json

"autoload": {
    "classmap": [
        "database"
    ],
    "psr-4": {
        "App\\": "app/"
    },
    "files":[
            "app/View/Composers/InjectPages.php"
    ]
},

执行： composer dump-autoload

in： app / Providers / AppServiceProvider.php

 public function boot()
  {
    view()->composer(
        'layouts.frontend', 'App\View\Composers\InjectPages'
    );
  }

在laravel AppServiceProvider上获取错误

3 个答案: