Laravel 5.2--改变数据库字段值，编辑时候，默认选中

模型

<?php

namespace AppModels;

use AppHelpersImageHelper;
use AppLibrariesNestedsetNodeTrait;

class Popular extends Model
{
    use NodeTrait;

    protected $table = 'populars';

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'status',
        'title',
        'image',
        'provider',
        'parent_id',
        'resource',
        'descript',
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'status',
        'orderby',
        '_lft',
        '_rgt',
        'provider_value',
        'created_at_millisecond',
        'created_at',
        'updated_at_millisecond',
        'updated_at'
    ];

    /**
     * get provider attribute
     */
    public function getProviderAttribute($value)
    {
        switch ($value) {
            case '1':
                $provider = 'category';
                break;
            case '2':
                $provider = 'brand';
                break;
            case '3':
                $provider = 'product';
                break;

            default:
                if (! $this->attributes['is_click']) {
                    $provider = 'unclick';
                } else {
                    $provider = 'undefine';
                }
                break;
        }

        return $provider;
    }

    /**
     * get provider value
     */
    public function getProviderValueAttribute()
    {
        switch ($this->provider) {
            case 'category':
                $value = 1;
                break;
            case 'brand':
                $value = 2;
                break;
            case 'product':
                $value = 3;
                break;
            default:
                $value = 0;
                break;
        }

        return $value;
    }

视图

       @include('admin.widget.select', [
                            'colsm' => '12',
                            'collg' => '6',
                            'id' => 'provider',
                            'name' => 'provider',
                            'title' => '跳转方式',
                            'selected' => isset($showPopular->provider_value) ? $showPopular->provider_value : '',
                            'values' => [
                                '商品详情' => '1',
                                '分类商品列表' => '2',
                                '品牌商品列表' => '3',
                            ]
                        ])