Laravel class＆＃39; navigation＆＃39;未找到

Question

我尝试从数据库构建导航树，但我一直没有找到类错误。也创建了数据库表

class Navigation extends Model
{
    /**
     * The database table used by the model.
     *
     * @var string
     */
    protected $table = 'navigation';

    public function parent()
    {
        return $this->hasOne('navigation', 'id', 'parent_id');
    }

    public function children()
    {
        return $this->hasMany('navigation', 'parent_id', 'id');

    }

    public static function tree()
    {
        return static::with(implode('.', array_fill(0, 4, 'children')))->where('parent_id', '=', NULL)->get();
    }
}

Answer 1

假设您将默认的Laravel结构更改为'navigation'到'App/Navigation'

class Navigation extends Model
{
    /**
     * The database table used by the model.
     *
     * @var string
     */
    protected $table = 'navigation';

    public function parent()
    {
        return $this->hasOne('App/Navigation', 'id', 'parent_id');
    }

    public function children()
    {
        return $this->hasMany('App/Navigation', 'parent_id', 'id');

    }