Question

我有两个模型User和Driver user可以注册任意数量的驱动程序drivers

在驱动程序表中我有agent_id，我想列出所有users及其注册的驱动程序数

在我的Usercontroller中我想获取代理商注册的驱动程序的数量

public function index(Request $request) 
{
    $users = User::all();

    $registration_centers = RegistrationCenter::all();

    $drivers_registered = Driver::where('agent_id' , $agent_id)->count();  //something like this but i don't have agent_id to query with

    return view('agents', compact('users', 'registration_centers', drivers_registered));
}

Drver Model

<?php

namespace App;

use Carbon\Carbon;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class Driver extends Model
{
   use SoftDeletes;

   protected $fillable = ['agent_id','registration_center','event_name','registration_id','profile_photo','first_name','last_name',];

}

和用户模型

<?php

namespace App;

use App\Driver;
use Laravel\Passport\HasApiTokens;
use Illuminate\Notifications\Notifiable;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable
{
    use SoftDeletes, HasApiTokens, Notifiable;

    protected $fillable = ['name', 'email', 'phone_number','password','address_city_village','address_state','image','registration_center','status'];

    protected $hidden = ['password', 'remember_token','created_at','updated_at','deleted_at'];

    protected $dates = ['deleted_at'];
}

我想在列表视图中显示所有users并显示每个用户的驱动程序数

<ul>
    @foreach (users as user)
    <li>User: {{user->name}}  
         Total Drivers: {{$user->drivers_count}}
        </li>
    @endforeach
</ul>

谢谢

Answer 1

示例AgentController：

 public function index(Request $request, $agenId){
        $users = User::all();
        $registration_centers = RegistrationCenter::all();
        $drivers_registered = Driver::where('agent_id' , $agenId)->count(); 
        return view('agents', compact('users', 'registration_centers', 
        'drivers_registered'));
    }

    this blade 
    <p> {{ $drivers_registered }} </p>

Answer 2

假设agent_id是将用户与驱动程序联系起来的关键...您非常接近我认为您要求的内容。

但是，在UserController的索引方法的第一行，我会更新

$users = User::all();

到

$users = User::withCount('drivers')->all();

并将驱动程序关系添加到User模型。

所以添加了关系的用户模型现在将是

class User extends Authenticatable
{
    use SoftDeletes, HasApiTokens, Notifiable;

    protected $fillable = ['name', 'email', 'phone_number','password','address_city_village','address_state','image','registration_center','status'];

    protected $hidden = ['password', 'remember_token','created_at','updated_at','deleted_at'];

    protected $dates = ['deleted_at'];

    public function drivers(){
        $this->hasMany('App\Driver', 'agent_id');
    }

}

您可以从控制器中删除以下行，但这取决于您...

$drivers_registered = Driver::where('agent_id' , $agent_id)->count();

列出所有已注册的驱动程序数的用户

2 个答案: