jucai/app/Models/HelpCategory.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
use Encore\Admin\Traits\ModelTree;
use Encore\Admin\Traits\AdminBuilder;

/**
 * App\Models\HelpCategory
 *
 * @property int $id
 * @property int $parent_id 分类父id
 * @property string $category_name 分类名称
 * @property int $list_order 显示顺序
 * @property \Illuminate\Support\Carbon|null $created_at
 * @property \Illuminate\Support\Carbon|null $updated_at
 * @property string|null $deleted_at
 * @property-read \Illuminate\Database\Eloquent\Collection|\App\Models\HelpCategory[] $children
 * @property-read \Illuminate\Database\Eloquent\Collection|\App\Models\Help[] $manyHelps
 * @property-read \App\Models\HelpCategory $parent
 * @method static bool|null forceDelete()
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Models\HelpCategory newModelQuery()
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Models\HelpCategory newQuery()
 * @method static \Illuminate\Database\Query\Builder|\App\Models\HelpCategory onlyTrashed()
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Models\HelpCategory query()
 * @method static bool|null restore()
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Models\HelpCategory whereCategoryName($value)
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Models\HelpCategory whereCreatedAt($value)
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Models\HelpCategory whereDeletedAt($value)
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Models\HelpCategory whereId($value)
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Models\HelpCategory whereListOrder($value)
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Models\HelpCategory whereParentId($value)
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Models\HelpCategory whereUpdatedAt($value)
 * @method static \Illuminate\Database\Query\Builder|\App\Models\HelpCategory withTrashed()
 * @method static \Illuminate\Database\Query\Builder|\App\Models\HelpCategory withoutTrashed()
 * @mixin \Eloquent
 */
class HelpCategory extends Model
{
    use SoftDeletes, ModelTree,AdminBuilder;

    protected $table = 'help_categorys';
    protected $fillable = ['parent_id', 'category_name', 'list_order'];
    public function __construct(array $attributes = [])
    {
        parent::__construct($attributes);
        $this->setParentColumn('parent_id');
        $this->setOrderColumn('list_order');
        $this->setTitleColumn('category_name');
    }

    public function parent()
    {
        return $this->belongsTo(HelpCategory::class, 'parent_id', 'id');
    }
    public function children()
    {
        return $this->hasMany(HelpCategory::class, 'parent_id', 'id');
    }
    public function manyHelps()
    {
        return $this->hasMany(Help::class, 'type_id');
    }


}