Laravel-datatables: 搜索：通过 id 检索属性

问题或功能请求摘要

通过在许多实体的表中存储拥有实体的 id 来断言一对多关系。 例如：协调员管理一个或多个中心。 通过 html 构建器设置列后，我编辑 cooditor_id 列并应用访问器方法来检索协调器全名：

public function getFullNameAttribute()
{
    return $this->first_name . ", " . $this->last_name;
}

我的目标是只允许属于经过身份验证的协调员的中心显示在数据表上，除非经过身份验证的用户是我的查询中显示的管理员。
但是，如果我输入出现在数据表上的 Coordinator 列的值，它会显示没有找到匹配的记录。

我如何实现这一目标？

问题代码片段

<?php

namespace App\DataTables;
use Auth;
use App\Center;
use App\Coordinator;
use Yajra\Datatables\Services\DataTable;

class CentersDataTable extends DataTable
{
    // protected $printPreview  = 'path.to.print.preview.view';

    /**
     * Display ajax response.
     *
     * <strong i="13">@return</strong> \Illuminate\Http\JsonResponse
     */
    public function ajax()
    {
        return $this->datatables
            ->eloquent($this->query())
            ->editColumn('action', function ($center) {
                return '<a href="edit-center/'.$center->id.'" <i class="material-icons sideicons-tables">create</i>'; 
               // <a href="field-technician-delete/'.$user->id.'" <i class="material-icons sideicons-tables">delete</i>
            })
            ->editColumn('coordinator_id', function ($user) {
                return Coordinator::find($user->coordinator_id)->full_name;
                })
            ->editColumn('gps_lat', function ($center) {
                    return $center->gps_location ;
                })
            ->make(true);
    }

    /**
     * Get the query object to be processed by datatables.
     *
     * <strong i="14">@return</strong> \Illuminate\Database\Query\Builder|\Illuminate\Database\Eloquent\Builder
     */
    public function query()
    {
        if(Auth::user()->hasRole('admin')){
        $centers = Center::query();
        return $this->applyScopes($centers);
        }
        else{
            $centers = Center::query()->where('coordinator_id',Auth::user()->userable->id);
            return $this->applyScopes($centers);
        }
    }

    /**
     * Optional method if you want to use html builder.
     *
     * <strong i="15">@return</strong> \Yajra\Datatables\Html\Builder
     */
    public function html()
    {
        return $this->builder()
             ->columns([
                'id' => ['title' => 'ID'],
                'center_name' => ['title' => 'Name'], 
                'gps_lat' => ['title' => 'Coordinates'],
                'contact_no' => ['title' => 'Contact Number'],
                'coordinator_id' => [
                            'title' => 'Coordinator',
                            'searchable' => true
                ],
                'created_at' => [ 'title' => 'Created'],
                 'updated_at' => ['title' => 'Updated'], 
                'action' => [
                             'data'           => 'action',
                            'name'           => 'action',
                            'render'         => null,
                            'orderable'      => false,
                            'searchable'     => false,
                            'exportable'     => false,
                            'printable'      => false
                             ]
             ])
             ->parameters([
                 'dom' => 'Bfrtip',
                 'buttons' => ['csv', 'excel', 'print','reload'],
             ]);
    }

    /**
     * Get columns.
     *
     * <strong i="16">@return</strong> array
     */
    private function getColumns()
    {
        return [
            'id',
            // add your columns
            'created_at',
            'updated_at',
        ];
    }

    /**
     * Get filename for export.
     *
     * <strong i="17">@return</strong> string
     */
    protected function filename()
    {
        return 'centers';
    }
}

系统详情

• 操作系统：OS X El Capitan 10.11.5
• PHP 版本：7.0.0
• Laravel 版本：5.1.36 (LTS)
• Laravel-Datatables 版本：6.11.5

问候，