1.7 KiB
https://gorm.io/zh_CN/docs GORM Guides The fantastic ORM library for Golang aims to be developer friendly.
Overview Full-Featured ORM Associations (Has One, Has Many, Belongs To, Many To Many, Polymorphism, Single-table inheritance) Hooks (Before/After Create/Save/Update/Delete/Find) Eager loading with Preload, Joins Transactions, Nested Transactions, Save Point, RollbackTo to Saved Point Context, Prepared Statement Mode, DryRun Mode Batch Insert, FindInBatches, Find/Create with Map, CRUD with SQL Expr and Context Valuer SQL Builder, Upsert, Locking, Optimizer/Index/Comment Hints, Named Argument, SubQuery Composite Primary Key, Indexes, Constraints Auto Migrations Logger Extendable, flexible plugin API: Database Resolver (Multiple Databases, Read/Write Splitting) / Prometheus… Every feature comes with tests Developer Friendly Install go get -u gorm.io/gorm go get -u gorm.io/driver/sqlite Quick Start 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) }