提交 05909898 编写于 作者: 彭世瑜's avatar 彭世瑜

fix

上级 7ca544ad
## Golang ORM库 gorm
ORM:对象关系映射 Object Relational Mapping
文档:
- [https://gorm.io/zh_CN/docs/](https://gorm.io/zh_CN/docs/)
安装
```
go get gorm.io/gorm
go get gorm.io/driver/mysql
```
```go
package main
import (
"fmt"
"gorm.io/driver/mysql"
"gorm.io/gorm"
)
type Product struct {
gorm.Model
Code string
Price uint
}
func main() {
dsn := "root:123456@tcp(127.0.0.1:3306)/go_db?charset=utf8mb4&parseTime=True&loc=Local"
db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
if err != nil {
panic("failed to connect database")
}
// 迁移 schema
db.AutoMigrate(&Product{})
// Create
db.Create(&Product{Code: "D42", Price: 100})
// Read
var product Product
db.First(&product, 1) // 根据整型主键查找
fmt.Printf("product: %v\n", product)
db.First(&product, "code = ?", "D42") // 查找 code 字段值为 D42 的记录
fmt.Printf("product: %v\n", product)
// Update - 将 product 的 price 更新为 200
db.Model(&product).Update("Price", 200)
// Update - 更新多个字段
db.Model(&product).Updates(Product{Price: 200, Code: "F42"}) // 仅更新非零值字段
db.Model(&product).Updates(map[string]interface{}{"Price": 200, "Code": "F42"})
// Delete - 软删除 product
db.Delete(&product, 1)
}
```
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...@@ -107,6 +107,8 @@ ...@@ -107,6 +107,8 @@
- [Golang操作MongoDB数据库](/blog/golang/golang-mongo.md) - [Golang操作MongoDB数据库](/blog/golang/golang-mongo.md)
- [Golang ORM库 gorm](/blog/golang/golang-gorm.md)
...@@ -114,4 +116,4 @@ https://www.bilibili.com/video/BV1ME411Y71o?p=27&spm_id_from=pageDriver&vd_sourc ...@@ -114,4 +116,4 @@ https://www.bilibili.com/video/BV1ME411Y71o?p=27&spm_id_from=pageDriver&vd_sourc
https://www.bilibili.com/video/BV1zR4y1t7Wj?p=112&spm_id_from=pageDriver&vd_source=efbb4dc944fa761b6e016ce2ca5933da https://www.bilibili.com/video/BV1zR4y1t7Wj?p=113&spm_id_from=pageDriver&vd_source=efbb4dc944fa761b6e016ce2ca5933da
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# 全栈爱好者技术周刊|20221017 # 全栈爱好者技术周刊|第1期
## 前端 ## 前端
...@@ -25,3 +25,12 @@ Tauri:下一代桌面应用开发框架? ...@@ -25,3 +25,12 @@ Tauri:下一代桌面应用开发框架?
33 个 "不得不看" 的 Python 关键字总结! 33 个 "不得不看" 的 Python 关键字总结!
- https://mp.weixin.qq.com/s/yMNyprGNMf4QEjYdG6wAbg - https://mp.weixin.qq.com/s/yMNyprGNMf4QEjYdG6wAbg
SpringBoot+Vue实现微信扫码支付、退款功能
- https://mp.weixin.qq.com/s/zH7zQI99smXyzxhbMeLONA
Domain Admin:监测域名SSL证书,到期邮件提醒
- https://mp.weixin.qq.com/s/batUjnNscGqYS5x5Vbn_Vw
一文读懂字符编码
- https://mp.weixin.qq.com/s/5pAgcjk_lFGrPhSUp2Na3Q
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# 全栈爱好者周刊 # 全栈爱好者周刊
[全栈爱好者周刊|20221017](/weekly/20221017.md) [全栈爱好者周刊|20221017](/weekly/1.md)
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