The fantastic ORM library for Golang aims to be developer friendly.

特性

• 全功能 ORM
• 关联 (Has One、Has Many、Belongs To、Many To Many、多态、单表继承)
• Create、Save、Update、Delete、Find 前/后的勾子
• 基于 Preload、Joins 的预加载
• 事务、嵌套事务、保存点、回滚至保存点
• Context、Prepared Statment 模式、DryRun 模式
• 批量插入、FindInBatches、查询至 Map
• SQL Builder, Upsert, Locking, Optimizer/Index/Comment Hints
• 复合主键
• 自动迁移
• 自定义 Logger
• Extendable, flexible plugin API: Database Resolver (Read/Write Splitting) / Prometheus…
• 所有特性都通过了测试
• 开发者友好

安装

go get -u gorm.io/gorm
go get -u gorm.io/driver/sqlite

快速入门

package main
import (
  "gorm.io/gorm"
  "gorm.io/driver/sqlite"
)
type Product struct {
  gorm.Model
  Code  string
  Price uint
}
func main() {
  db, err := gorm.Open(sqlite.Open("test.db"), &gorm.Config{})
  if err != nil {
    panic("failed to connect database")
  }
  // Migrate the schema
  db.AutoMigrate(&Product{})
  // Create
  db.Create(&Product{Code: "D42", Price: 100})
  // Read
  var product Product
  db.First(&product, 1) // find product with integer primary key
  db.First(&product, "code = ?", "D42") // find product with code D42
  // Update - update product's price to 200
  db.Model(&product).Update("Price", 200)
  // Update - update multiple fields
  db.Model(&product).Updates(Product{Price: 200, Code: "F42"}) // non-zero fields
  db.Model(&product).Updates(map[string]interface{}{"Price": 200, "Code": "F42"})
  // Delete - delete product
  db.Delete(&product, 1)
}