ent 基本使用五 schema介绍

ent 提供了自动生成schema 但是，我们可以基于生成schema 进行扩展，schema 主要包含以下配置

一个简单的schema

package schema

import (

    "github.com/facebookincubator/ent"

    "github.com/facebookincubator/ent/schema/field"

    "github.com/facebookincubator/ent/schema/edge"

    "github.com/facebookincubator/ent/schema/index"

type User struct {

    ent.Schema

func (User) Fields() []ent.Field {

    return []ent.Field{

        field.Int("age"),

        field.String("name"),

        field.String("nickname").

            Unique(),

func (User) Edges() []ent.Edge {

    return []ent.Edge{

        edge.To("groups", Group.Type),

        edge.To("friends", User.Type),

func (User) Index() []ent.Index {

    return []ent.Index{

        index.Fields("age", "name").

            Unique(),

ent 提供了一个命令行工具，我们可以用来生成schema

entc init User Group

附带ent 命令行工具的帮助

Usage:

  entc [command]

Available Commands:

  describe print a description of the graph schema

  generate generate go code for the schema directory

  help Help about any command

  init initialize an environment with zero or more schemas

Flags:

  -h, --help help for entc

Use "entc [command] --help" for more information about a command.