Question

我正在关注laravel中的授权教程，但它似乎在代码中出现了一些错误：

"Type error: Argument 2 passed to App\Providers\AuthServiceProvider::App\Providers\{closure}() must be an instance of App\Providers\Post, instance of App\Post given, called in E:\xampp\htdocs\cms\vendor\laravel\framework\src\Illuminate\Auth\Access\Gate.php on line 323 ◀"

我在访问http://cms.dev/posts/edit/2时收到了这些错误代码。这是我在AuthServicesProfider上的代码：

public function registerPostPolicies()
    {
        Gate::define('create-post', function ($user) {
            return $user->hasAccess(['create-post']);
        });
        Gate::define('update-post', function  ($user, Post $post) {
            return $user->hasAccess(['update-post']) or $user->id == $post->user_id;
        });
        Gate::define('publish-post', function ($user) {
            return $user->hasAccess(['publish-post']);
        });
        Gate::define('see-all-drafts', function ($user) {
            return $user->inRole('editor');
        });
    }

这里是update.blade的代码：

@extends('layouts.app')

@section('content')
    <div class="container">
        <div class="row">
            <div class="col-md-8 col-md-offset-2">
                <div class="panel panel-default">
                    <div class="panel-heading">Update Post</div>

                    <div class="panel-body">
                        <form class="form-horizontal" role="form" method="POST" action="{{ route('update_post', ['post' => $post->id]) }}">
                            {{ csrf_field() }}

                            <div class="form-group{{ $errors->has('title') ? ' has-error' : '' }}">
                                <label for="title" class="col-md-4 control-label">Title</label>

                                <div class="col-md-6">
                                    <input id="title" type="text" class="form-control" name="title" value="{{ old('title', $post->title) }}" required autofocus>

                                    @if ($errors->has('title'))
                                        <span class="help-block">
                                        <strong>{{ $errors->first('title') }}</strong>
                                    </span>
                                    @endif
                                </div>
                            </div>

                            <div class="form-group{{ $errors->has('body') ? ' has-error' : '' }}">
                                <label for="body" class="col-md-4 control-label">Body</label>

                                <div class="col-md-6">
                                    <textarea name="body" id="body" cols="30" rows="10" class="form-control" required>{{ old('body', $post->body) }}</textarea>
                                    @if ($errors->has('body'))
                                        <span class="help-block">
                                        <strong>{{ $errors->first('body') }}</strong>
                                    </span>
                                    @endif
                                </div>
                            </div>

                            <div class="form-group">
                                <div class="col-md-6 col-md-offset-4">
                                    <button type="submit" class="btn btn-primary">
                                        Update
                                    </button>
                                    @can('publish-post')
                                        <a href="{{ route('publish_post', ['post' => $post->id]) }}" class="btn btn-primary">
                                            Publish
                                        </a>
                                    @endcan
                                    <a href="{{ route('list_posts') }}" class="btn btn-primary">
                                        Cancel
                                    </a>
                                </div>
                            </div>
                        </form>
                    </div>
                </div>
            </div>
        </div>
    </div>
@endsection

我真的不知道如何修复它，因为我真的不了解Laravel的授权。感谢。

Answer 1

您错过了发布类的使用语句，因此PHP假定该网址从当前命名空间中获取发布类，因此错误消息中的 App \ Providers \ Post 。

在提供程序类中添加以下内容：

use App\Post;

Laravel 5.5上的门错误

1 个答案: