bike-admin/app/Filters/Traits/RelationUserFilter.php

<?php

namespace App\Filters\Traits;

use Illuminate\Database\Eloquent\Builder;

trait RelationUserFilter
{
    protected function mobile($val)
    {
        $this->builder->whereHas('users', function (Builder $query) use ($val) {
            $query->where('mobile', 'like', "%{$val}%");
        });
    }

    protected function nickname($val)
    {
        $this->builder->whereHas('users', function (Builder $query) use ($val) {
            $query->where('nickname', 'like', "%{$val}%");
        });
    }

    protected function mobileNickname($val){
        $this->builder->whereHas('users', function (Builder $query) use ($val) {
            $query->where('mobile', 'like', "%{$val}%")
                ->Orwhere('nickname', 'like', "%{$val}%");
        });
    }
}