Overview

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

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
Generics API for type-safe queries and operations
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

Generics API (>= v1.30.0)

package main

import (
  "context"
  "gorm.io/driver/sqlite"
  "gorm.io/gorm"
)

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")
  }

  ctx := context.Background()

  
  db.AutoMigrate(&Product{})

  
  err = gorm.G[Product](db).Create(ctx, &Product{Code: "D42", Price: 100})

  
  product, err := gorm.G[Product](db).Where("id = ?", 1).First(ctx) 
  products, err := gorm.G[Product](db).Where("code = ?", "D42").Find(ctx) 

  
  err = gorm.G[Product](db).Where("id = ?", product.ID).Update(ctx, "Price", 200)
  
  err = gorm.G[Product](db).Where("id = ?", product.ID).Updates(ctx, Product{Code: "D42", Price: 100})

  
  err = gorm.G[Product](db).Where("id = ?", product.ID).Delete(ctx)
}

Traditional API

package main

import (
  "gorm.io/driver/sqlite"
  "gorm.io/gorm"
)

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")
  }

  
  db.AutoMigrate(&Product{})

  
  db.Create(&Product{Code: "D42", Price: 100})

  
  var product Product
  db.First(&product, 1) 
  db.First(&product, "code = ?", "D42") 

  
  db.Model(&product).Update("Price", 200)
  
  db.Model(&product).Updates(Product{Price: 200, Code: "F42"}) 
  db.Model(&product).Updates(map[string]interface{}{"Price": 200, "Code": "F42"})

  
  db.Delete(&product, 1)
}

Overview

Overview

Install

Quick Start

Generics API (>= v1.30.0)

Traditional API

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