user() user() : \Illuminate\Database\Eloquent\Relations\BelongsToMany 定义你的关联模型. Returns \Illuminate\Database\Eloquent\Relations\BelongsToMany —
createTime() createTime() : \Illuminate\Database\Eloquent\Casts\Attribute 创建时间 Returns \Illuminate\Database\Eloquent\Casts\Attribute —
updateTime() updateTime() : \Illuminate\Database\Eloquent\Casts\Attribute 更新时间。 Returns \Illuminate\Database\Eloquent\Casts\Attribute —