# ent-go-demo

**Repository Path**: conway_liu/ent-go-demo

## Basic Information

- **Project Name**: ent-go-demo
- **Description**: entgo  测试项目
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2024-11-13
- **Last Updated**: 2024-11-13

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

```
go get entgo.io/ent/cmd/ent

# 建表
go run -mod=mod entgo.io/ent/cmd/ent new Demo

# 修改字段数据
>> ent/schema/demo.go

func (Demo) Fields() []ent.Field {
	return []ent.Field{
		field.Text("username").Unique().Comment("用户"),
		field.Text("password").Default("123456").Comment("密码"),
		field.Time("c_time").Default(time.Now).Immutable().Comment("创建时间"),
		field.Time("u_time").Default(time.Now).UpdateDefault(time.Now).Comment("修改时间"),
		field.Enum("sources").NamedValues("local", "0", "remote", "1").Default("0").Comment("用户类型"),
	}
}

# 生成数据
go generate ./ent

# 新建连接
	// client, err := ent.Open("sqlite3", "file:ent?mode=memory&cache=shared&_fk=1")
	client, err := ent.Open("sqlite3", "file:file.db?_fk=1")

	if err != nil {
		log.Fatalf("failed opening connection to sqlite: %v", err)
	}
	defer client.Close()

# 合并数据
	// Run the auto migration tool.
	if err := client.Schema.Create(context.Background()); err != nil {
		log.Fatalf("failed creating schema resources: %v", err)
	}

# 新增数据
	// create
	save, err := client.Demo.Create().SetText("zhangsan").Save(context.Background())
	if err != nil {
		log.Fatalf("create failed: %v", err)
	}
	fmt.Println(save)
	
# 查询数据
client.Demo.Query().All(context.Background())

# 删除数据
	// fmt.Println(client.Demo.Delete().Exec(context.Background()))
	fmt.Println(client.Demo.Delete().Where(demo.UsernameEQ("zhangsan1")).Exec(context.Background()))

	// fmt.Println(client.Demo.DeleteOneID(2).Exec(context.Background()))
	userData, err := client.Demo.Query().Where(demo.UsernameEQ("zhangsan3")).Only(context.Background())
	fmt.Println(userData, err)
	fmt.Println(client.Demo.DeleteOne(userData).Exec(context.Background()))


```