Laravel 背包编辑表单显示具有从数据库中选择的值的清单项目

Question

在我的 crud 控制器中，有一个名为“角色（多个清单）”的字段，而在保存角色之前，我正在使用 implode 将数组转换为字符串，如 1,2,3。例如：CrudController setUp() 方法

$options = [
                'name' => 'roles',
                'label' => 'Roles',
                'type' => 'checklist',
                'entity' => 'roles',
                'attribute' => 'name',
                'model' => "Backpack\PermissionManager\app\Models\Role",
            
            ];
        
        $this->crud->addField($options);

在 Store 方法中，

public function store(StoreRequest $request)
    {
        $sel_roles = $request->input("roles");

        $roles = !empty($sel_roles) ? implode(",",$sel_roles) : "";

        $request->request->set("roles",$roles);       

        //dd($request);
        return parent::storeCrud($request);
    }

编辑方法如下所示，

public function edit($id) {

        $this->crud->hasAccessOrFail('update');
        // get the info for that entry
         $this->data['entry']= $this->crud->getEntry($id);
         $options = [
            'name' => 'roles',
            'label' => 'Roles',
            'type' => 'checklist',
            'entity' => 'roles',
            'attribute' => 'name',
            'model' => "Backpack\PermissionManager\app\Models\Role",
        
        ];
    
        $this->crud->addField($options);

         $this->data['crud'] = $this->crud;
         $this->data['fields'] = $this->crud->getUpdateFields($id);

         $this->data['id'] = $id;

         return view('crud::edit', $this->data);

    }

如果我正在尝试访问、编辑页面，我遇到以下错误，

第 15 行出现错误异常：调用成员函数 pluck() on string (View: /var/www/html/app/vendor/backpack/crud/src/resources/views/fields/checklist.blade.php)

checklist.blade.php 页面如下所示

<div @include('crud::inc.field_wrapper_attributes') >
    <label>{!! $field['label'] !!}</label>
    <?php $entity_model = $crud->getModel(); ?>

    <div class="row">
        @foreach ($field['model']::all() as $connected_entity_entry)
            <div class="col-sm-4">
                <div class="checkbox">
                  <label>
                    <input type="checkbox"
                      name="{{ $field['name'] }}[]"
                      value="{{ $connected_entity_entry->id }}"

                      @if( ( old( $field["name"] ) && in_array($connected_entity_entry->id, old( $field["name"])) ) || (isset($field['value']) && in_array($connected_entity_entry->id, $field['value']->pluck('id', 'id')->toArray())))
                             checked = "checked"
                      @endif > {!! $connected_entity_entry->{$field['attribute']} !!}
                  </label>
                </div>
            </div>
        @endforeach
    </div>

    {{-- HINT --}}
    @if (isset($field['hint']))
        <p class="help-block">{!! $field['hint'] !!}</p>
    @endif
</div>

如何在编辑页面中显示具有选定值的角色。

谢谢

Answer 1

经过几个小时的调试和验证，

以集合格式发送编辑值，

 $options = [
            'name' => 'role_id',
            'label' => 'Roles',
            'type' => 'checklist',
            'entity' => 'roles',
            'attribute' => 'name',
            'model' => "Backpack\PermissionManager\app\Models\Role",
            "value" => collect([$edit_value_array])
        
        ];

Laravel 背包编辑表单显示具有从数据库中选择的值的清单项目

Laravel backpack edit form displaying checklist items with selected values from database

php

laravel

laravel-backpack