first commit

.gitignore

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+# Reference https://github.com/github/gitignore/blob/master/Go.gitignore
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+vendor/
+
+# Go workspace file
+go.work
+
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# OS General
+Thumbs.db
+.DS_Store
+
+# project
+*.cert
+*.key
+*.log
+bin/
+
+# Develop tools
+.vscode/
+.idea/
+*.swp
+
+# volumes
+data/

README.md

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+# GORM 示例代码

basic.go

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+package gormExample
+
+import (
+	"fmt"
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+	"log"
+	"time"
+)
+
+// 创建模型
+type Article struct {
+	// 嵌入基础模型
+	gorm.Model
+	// 定义字段
+	Subject     string
+	Likes       uint
+	Published   bool
+	PublishTime time.Time
+	AuthorID    uint
+}
+
+func BasicUsage() {
+	// 定义DSN
+	dsn := "root:secret@tcp(127.0.0.1:3306)/gormExample?charset=utf8mb4&parseTime=True&loc=Local"
+
+	// 连接服务器（池）
+	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Open成功
+	//fmt.Println(db)
+
+	// 基于模型完成表结构（设计）的迁移（定义）
+	if err := db.AutoMigrate(&Article{}); err != nil {
+		log.Fatal(err)
+	}
+	fmt.Println("migrate success")
+}
+
+var DB *gorm.DB
+
+func init() {
+	// 定义DSN
+	const dsn = "root:secret@tcp(127.0.0.1:3306)/gormExample?charset=utf8mb4&parseTime=True&loc=Local"
+
+	// 连接服务器（池）
+	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	DB = db
+}
+
+func Create() {
+	// 构建Article类型数据
+	article := &Article{
+		Subject:     "GORM 的 CRUD 基础操作",
+		Likes:       0,
+		Published:   true,
+		PublishTime: time.Now(),
+		AuthorID:    42,
+	}
+
+	// DB.Create 完成数据库的insert
+	if err := DB.Create(article).Error; err != nil {
+		log.Fatal(err)
+	}
+
+	// print
+	fmt.Println(article)
+}
+
+func Retrieve(id uint) {
+	// 初始化Article模型，零值
+	article := &Article{}
+
+	// DB.First()
+	if err := DB.First(article, id).Error; err != nil {
+		log.Fatal(err)
+	}
+
+	// print
+	fmt.Println(article)
+}
+
+func Update() {
+	// 获取需要更新的对象
+	article := &Article{}
+	if err := DB.First(article, 1).Error; err != nil {
+		log.Fatal(err)
+	}
+
+	// 更新对象字段
+	article.AuthorID = 23
+	article.Likes = 101
+	article.Subject = "新的文章标题"
+
+	// 存储，DB.Save()
+	if err := DB.Save(article).Error; err != nil {
+		log.Fatal(err)
+	}
+
+	// print
+	fmt.Println(article)
+}
+
+func Delete() {
+	// 获取模型对象
+	article := &Article{}
+	if err := DB.First(article, 1).Error; err != nil {
+		log.Fatal(err)
+	}
+
+	// DB.Delete() 删除
+	if err := DB.Delete(article).Error; err != nil {
+		log.Fatal(err)
+	}
+
+	// print
+	fmt.Println("article was deleted")
+}

basic_test.go

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+package gormExample
+
+import "testing"
+
+func TestBasicUsage(t *testing.T) {
+	BasicUsage()
+}
+
+func TestCreate(t *testing.T) {
+	Create()
+}
+
+func TestRetrieve(t *testing.T) {
+	Retrieve(1)
+}
+
+func TestUpdate(t *testing.T) {
+	Update()
+}
+
+func TestDelete(t *testing.T) {
+	Delete()
+}

docker-compose.yml

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+services:
+  db:
+    container_name: gormExampleMySQL
+    image: mysql
+    environment:
+      MYSQL_ROOT_PASSWORD: secret
+      MYSQL_DATABASE: gormExample
+    ports:
+      - "3306:3306"
+    volumes:
+      - ./mysql/data:/var/lib/mysql

go.mod

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+module gormExample
+
+go 1.20
+
+require (
+	github.com/go-sql-driver/mysql v1.7.0 // indirect
+	github.com/jinzhu/inflection v1.0.0 // indirect
+	github.com/jinzhu/now v1.1.5 // indirect
+	gorm.io/driver/mysql v1.4.7 // indirect
+	gorm.io/gorm v1.24.6 // indirect
+)

go.sum

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+github.com/go-sql-driver/mysql v1.7.0 h1:ueSltNNllEqE3qcWBTD0iQd3IpL/6U+mJxLkazJ7YPc=
+github.com/go-sql-driver/mysql v1.7.0/go.mod h1:OXbVy3sEdcQ2Doequ6Z5BW6fXNQTmx+9S1MCJN5yJMI=
+github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E=
+github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
+github.com/jinzhu/now v1.1.4/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
+github.com/jinzhu/now v1.1.5 h1:/o9tlHleP7gOFmsnYNz3RGnqzefHA47wQpKrrdTIwXQ=
+github.com/jinzhu/now v1.1.5/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
+gorm.io/driver/mysql v1.4.7 h1:rY46lkCspzGHn7+IYsNpSfEv9tA+SU4SkkB+GFX125Y=
+gorm.io/driver/mysql v1.4.7/go.mod h1:SxzItlnT1cb6e1e4ZRpgJN2VYtcqJgqnHxWr4wsP8oc=
+gorm.io/gorm v1.23.8/go.mod h1:l2lP/RyAtc1ynaTjFksBde/O8v9oOGIApu2/xRitmZk=
+gorm.io/gorm v1.24.6 h1:wy98aq9oFEetsc4CAbKD2SoBCdMzsbSIvSUUFJuHi5s=
+gorm.io/gorm v1.24.6/go.mod h1:L4uxeKpfBml98NYqVqwAdmV1a2nBtAec/cf3fpucW/k=