当我使用背包3.6时，我创建了一个称为RelatedCrud的特征，并进行了所有设置，以便在同一页面中拥有多个CRUD。
为了更好地说明一个例子，我使用了CRUD页面“ Note”，该页面处理了“ Ticket”中的注释。票证和票据是两个单独的CRUD实体。通过修改视图并创建特征，我设法将一个特定故障单的“显示”部分放入“注释”的“创建”页面内。注释的“创建”页面基本上既包含特定票证的“显示”，又包含我可以用来创建新注释的表单。
它曾经可以在3.6中使用，但是现在我并没有转到4.0版本。 是因为CrudPanel现在是单身人士吗？ 我该怎么做才能使这项工作成功？
这就是我所做的：
NoteTicketCrudController：
<?php
namespace App\Http\Controllers\Admin;
use Route;
class NoteTicketCrudController extends TicketCrudController
{
public function setup()
{
parent::setup();
$this->crud->removeButton('reply_button');
$this->crud->removeButton('note_button');
$this->crud->denyAccess('delete');
$this->crud->denyAccess('create');
$this->crud->denyAccess('update');
// get the user_id parameter
$noteId = Route::current()->parameter('note') ?: Route::current()->parameter('note_id');
// set a different route for the admin panel buttons
$this->crud->setRoute("admin/notes/".$noteId."/tickets");
// show only that user's posts
$this->crud->addClause('whereHas', 'notes', function ($query) use($noteId) {
$query->where('id', $noteId);
});
$this->crud->setColumnDetails('subject', ['limit' => '1000']);
$this->crud->addColumn([
'name' => 'description',
'label' => 'Messaggio',
'type' => 'text',
'limit' => 1000
])->afterColumn('subject');
$this->crud->addColumn([
// run a function on the CRUD model and show its return value
'name' => "history_info",
'label' => "",
'type' => 'closure',
'function' => function ($entry) {
return $entry->getHistoryView();
}
]);
}
}
RelatedCrud：
<?php
namespace App\Traits;
use Backpack\CRUD\app\Http\Controllers\CrudController;
trait RelatedCrud
{
public $relatedCrud;
public function setupRelated(CrudController $relatedController)
{
$relatedController->crud = app()->make('crud'); // 4.0
$relatedController->request = request();
$relatedController->setupDefaults(); // 4.0
$relatedController->setup();
$relatedController->setupConfigurationForCurrentOperation(); // 4.0
$this->relatedCrud = $relatedController->crud;
}
}
NoteCrudController：
class NoteCrudController extends CrudController
{
use \Backpack\CRUD\app\Http\Controllers\Operations\ListOperation;
use \Backpack\CRUD\app\Http\Controllers\Operations\ShowOperation { show as traitShow; }
use \Backpack\CRUD\app\Http\Controllers\Operations\CreateOperation { store as traitStore; create as traitCreate; }
use \Backpack\CRUD\app\Http\Controllers\Operations\UpdateOperation { edit as traitEdit; update as traitUpdate; }
use \Backpack\CRUD\app\Http\Controllers\Operations\DeleteOperation { destroy as traitDestroy; }
use AccessManager;
use RelatedCrud;
public $ticket;
public function setup()
{
/*
|--------------------------------------------------------------------------
| CrudPanel Basic Information
|--------------------------------------------------------------------------
*/
$this->crud->setModel('App\Note');
$this->crud->setRoute(config('backpack.base.route_prefix') . '/notes');
$this->crud->setEntityNameStrings('note', 'note');
//imposta il controller usato per mostrare la tabella dei ticket nel metodo show
$this->setupRelated(new NoteTicketCrudController()); // LOADS SECOND CRUD
/*
|--------------------------------------------------------------------------
| CrudPanel Configuration
|--------------------------------------------------------------------------
*/
$this->setPermissions();
$this->ticket = $this->crud->request->ticket ? Ticket::find($this->crud->request->ticket) : null; // GETS TICKET ID BASED ON GET REQUEST
[...]
public function create()
{
if(!$this->ticket) {
throw new AccessDeniedException(trans('backpack::crud.unauthorized_access', ['access' => 'create']));
}
$this->hasAccessToEntryOrFail('create', null);
$this->crud->hasAccessOrFail('create');
// $this->crud->setOperation('create');
// prepare the fields you need to show
$this->data['crud'] = $this->crud;
if($this->ticket) { // GETS TICKET AND SAVES ITS DATA IN RELATEDCRUD FIELD
$this->data['relatedCrud'] = $this->relatedCrud;
$this->data['entry'] = $this->data['relatedCrud']->getEntry($this->ticket->id);
}
$this->data['saveAction'] = $this->crud->getSaveAction();
// $this->data['fields'] = $this->crud->getCreateFields();
$this->data['title'] = $this->crud->getTitle() ?? trans('backpack::crud.add').' '.$this->crud->entity_name;
// load the view from /resources/views/vendor/backpack/crud/ if it exists, otherwise load the one in the package
return view($this->crud->getCreateView(), $this->data);
}
Routes \ backpack \ custom.php：
Route::group([
'prefix' => config('backpack.base.route_prefix', 'admin'),
'middleware' => ['web', config('backpack.base.middleware_key', 'admin')],
'namespace' => 'App\Http\Controllers\Admin',
], function () { // custom admin routes
Route::get('/dashboard', 'DashboardController@dashboard')->name('backpack.dashboard');
Route::get('/', 'DashboardController@redirect')->name('backpack');
Route::crud('tickets', 'TicketCrudController');
Route::crud('notes', 'NoteCrudController');
Route::group(['prefix' => 'notes/{note_id}'], function() {
Route::crud('tickets', 'NoteTicketCrudController');
});
});
Create.blade.php：
@extends(backpack_view('layouts.top_left'))
@php
$defaultBreadcrumbs = [
trans('backpack::crud.admin') => url(config('backpack.base.route_prefix'), 'dashboard'),
$crud->entity_name_plural => url($crud->route),
trans('backpack::crud.preview') => false,
];
// if breadcrumbs aren't defined in the CrudController, use the default breadcrumbs
$breadcrumbs = $breadcrumbs ?? $defaultBreadcrumbs;
@endphp
@section('header')
<section class="container-fluid">
<h2>
<span class="text-capitalize">{!! $crud->getHeading() ?? $crud->entity_name_plural !!}</span>
<small>{!! $crud->getSubheading() ?? trans('backpack::crud.add').' '.$crud->entity_name !!}.</small>
@if ($crud->hasAccess('list'))
<small><a href="{{ url($crud->route) }}" class="hidden-print font-sm"><i class="fa fa-angle-double-left"></i> {{ trans('backpack::crud.back_to_all') }} <span>{{ $crud->entity_name_plural }}</span></a></small>
@endif
</h2>
</section>
@endsection
@section('content')
@if(!empty($relatedCrud))
<div class="row">
<div class="{{ $relatedCrud->getShowContentClass() }}">
<!-- Default box -->
<div class="">
@if ($relatedCrud->model->translationEnabled())
<div class="row">
<div class="col-md-12 mb-2">
<!-- Change translation button group -->
<div class="btn-group float-right">
<button type="button" class="btn btn-sm btn-primary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
{{trans('backpack::crud.language')}}: {{ $relatedCrud->model->getAvailableLocales()[$relatedCrud->request->input('locale')?$relatedCrud->request->input('locale'):App::getLocale()] }} <span class="caret"></span>
</button>
<ul class="dropdown-menu">
@foreach ($relatedCrud->model->getAvailableLocales() as $key => $locale)
<a class="dropdown-item" href="{{ url($relatedCrud->route.'/'.$entry->getKey()) }}?locale={{ $key }}">{{ $locale }}</a>
@endforeach
</ul>
</div>
</div>
</div>
@else
@endif
<div class="card no-padding no-border">
<table class="table table-striped mb-0">
<tbody>
<?php $i = 0 ?>
@foreach ($relatedCrud->columns() as $column)
@if($column['name'] != 'history_info')
@if($column['name'] != 'priority' && $column['name'] != 'description')
@if($i % 2 == 0)
<tr>
@endif
<td style="width:15%;">
<strong>{!! $column['label'] !!}</strong>
</td>
<td style="width:35%;">
@if (!isset($column['type']))
@include('crud::columns.text')
@else
@if(view()->exists('vendor.backpack.crud.columns.'.$column['type']))
@include('vendor.backpack.crud.columns.'.$column['type'])
@else
@if(view()->exists('crud::columns.'.$column['type']))
@include('crud::columns.'.$column['type'])
@else
@include('crud::columns.text')
@endif
@endif
@endif
</td>
@if($i % 2 == 1)
</tr>
@endif
<?php $i++; ?>
@endif
@endif
@endforeach
@if (count($relatedCrud->columns()) % 2 == 1)
</tr>
@endif
</tr>
</tbody>
</table>
<table class="table table-striped mb-0">
<tbody>
@foreach($relatedCrud->columns() as $column)
@if($column['name'] == 'history_info' || $column['name'] == 'description')
<tr>
<td style="width:100%;">
@if($column['name'] == 'description')
<strong>{!! $column['label'] !!}</strong><br>
@endif
@if (!isset($column['type']))
@include('crud::columns.text')
@else
@if(view()->exists('vendor.backpack.crud.columns.'.$column['type']))
@include('vendor.backpack.crud.columns.'.$column['type'])
@else
@if(view()->exists('crud::columns.'.$column['type']))
@include('crud::columns.'.$column['type'])
@else
@include('crud::columns.text')
@endif
@endif
@endif
</td>
</tr>
@endif
@endforeach
</tbody>
</table>
</div><!-- /.box-body -->
</div><!-- /.box -->
</div>
</div>
@endif
<div class="row m-t-20">
<div class="{{ $crud->getCreateContentClass() }}">
<!-- Default box -->
@include('crud::inc.grouped_errors')
<form method="post"
action="{{ url($crud->route) }}"
@if ($crud->hasUploadFields('create'))
enctype="multipart/form-data"
@endif
>
{!! csrf_field() !!}
<div class="row display-flex-wrap">
<!-- load the view from the application if it exists, otherwise load the one in the package -->
@if(view()->exists('vendor.backpack.crud.form_content'))
@include('vendor.backpack.crud.form_content', [ 'fields' => $crud->getFields('create'), 'action' => 'create' ])
@else
@include('crud::form_content', [ 'fields' => $crud->getFields('create'), 'action' => 'create' ])
@endif
</div><!-- /.box-body -->
@include('crud::inc.form_save_buttons')
</form>
</div>
</div>
@endsection
我希望在NoteCrud的“创建”页面中看到一张特定票证的“显示”部分。
Ticket数据覆盖了CRUD页面中的Note数据（因为现在将CrudPanel对象视为一个单例？），并且创建页面返回错误，因为它试图通过Ticket访问Note的字段和方法。
我将位于CrudController的__construct（）中的新命令放入了我的自定义RelatedCrud特征中的SetupRelated方法中。
当我运行php artisan backpack:version时，输出为：
laravel/framework v5.8.35 The Laravel Framework.
backpack/crud 4.0.5 Quickly build an admin interfaces using Laravel 6, CoreUI, Boostrap 4 and jQuery.
backpack/generators 2.0.4 Generate files for laravel projects
backpack/permissionmanager 5.0.0 Users and permissions management interface for Laravel 5 using Backpack CRUD.