iluminar/goodwork

use Illuminate\Database\Eloquent\Relations\BelongsToMany;

interface HasMembers
{
    public function members(): BelongsToMany;
}

use App\Base\Models\Group;
use App\Base\Contracts\HasMembers;

class Office extends Group implements HasMembers
{
    //
    public function members(): BelongsToMany
    {
        return $this->belongsToMany(User::class, 'office_user', 'office_id', 'user_id');
    }
    //
}

use App\Base\Models\Group;
use App\Base\Contracts\HasMembers;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;

class Project extends Group implements HasMembers
{
    //
    public function members(): BelongsToMany
    {
        return $this->belongsToMany(User::class, 'project_user', 'project_id', 'user_id');
    }
    //
}

use App\Base\Contracts\HasMembers;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;

class Team extends Group implements HasMembers
{
    public function members(): BelongsToMany
    {
        return $this->belongsToMany(\App\Base\Models\User::class, 'team_user', 'team_id', 'user_id');
    }
}