英文:
structs with multiple mapping notations
问题
我有这两个结构体，它们表示相同的实体（一个来自Json文件，另一个来自数据库）：
type DriverJson struct {
ID int `json:"id"`
Name string `json:"name"`
}
type DriverOrm struct {
ID int `orm:"column(id);auto"`
Name string `orm:"column(name);size(255);null"`
}
我想将它们合并成一个Driver结构体，如何合并映射注释（orm:，json:）？
谢谢。
英文:
I have these two structs which represent the same entities (one comes from a Json file and the other from a DB)
type DriverJson struct {
ID int `json:"id"`
Name string `json:"name"`
}
type DriverOrm struct {
ID int `orm:"column(id);auto"`
Name string `orm:"column(name);size(255);null"`
}
I want to merge them into one Driver struct, how do I merge the mapping notations (orm:, json:)?
Thank you
答案1
得分: 4
如reflect.StructTag文档中所述，按照惯例，标签字符串的值是由空格分隔的key:"value"对，因此可以简单地写成：
type DriverJson struct {
ID int `json:"id" orm:"column(id);auto"`
Name string `json:"name" orm:"column(name);size(255);null"`
}
详情请参阅 https://stackoverflow.com/questions/10858787/what-are-the-uses-for-tags-in-go/30889373#30889373
英文:
As mentioned in the documentation of reflect.StructTag, by convention the value of a tag string is a space-separated key:"value" pairs, so simply:
type DriverJson struct {
ID int `json:"id" orm:"column(id);auto"`
Name string `json:"name" orm:"column(name);size(255);null`
}
For details, see https://stackoverflow.com/questions/10858787/what-are-the-uses-for-tags-in-go/30889373#30889373
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