User.php

<?php

namespace App;

use Illuminate\Notifications\Notifiable;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable
{
    use Notifiable;

    protected $table = 'users';

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password',
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token', 'role_id',
    ];

    protected $appends = [
        'role',
    ];

    public function getRoleAttribute()
    {
        return $this->role->name;
    }

    /**
     * Country where the user lives in.
     *
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function country()
    {
        return $this->belongsTo('App\Country');
    }

    /**
     * User role.
     *
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function role()
    {
        return $this->belongsTo('App\Role');
    }

    /**
     * Check if the user is an admin.
     *
     * @return bool
     */
    public function isAdmin()
    {
        if ($this->role->name == 'admin') {
            return true;
        }

        return false;
    }
}