README
¶
entcpkg example
An example of using entc
(ent codegen) as package rather than an executable.
In this example, we have a file named entc.go
under the ./ent
directory, that holds the
configuration for the codegen:
// +build ignore
package main
import (
"log"
"strings"
"text/template"
"entgo.io/ent/entc"
"entgo.io/ent/entc/gen"
)
func main() {
opts := []entc.Option{
entc.Dependency(
entc.DependencyType(&http.Client{}),
),
entc.TemplateFiles(
"template/debug.tmpl",
"template/stringer.tmpl",
),
}
err := entc.Generate("./schema", &gen.Config{
Header: `
// Copyright 2019-present Facebook Inc. All rights reserved.
// This source code is licensed under the Apache 2.0 license found
// in the LICENSE file in the root directory of this source tree.
// Code generated by ent, DO NOT EDIT.
`,
// A usage for custom templates with external functions.
Templates: []*gen.Template{
gen.MustParse(gen.NewTemplate("static").
Funcs(template.FuncMap{"title": strings.ToTitle}).
ParseFiles("template/static.tmpl")),
},
}, opts...)
if err != nil {
log.Fatal("running ent codegen:", err)
}
}
As you can see, the file is tagged with // +build ignore
in order to not include it
in the ent
package. In order to run the codegen, run the file itself (using go run
)
or run go generate ./ent
. The generate.go
file holds the go run command
:
package ent
//go:generate go run entc.go
The generate.go
file is preferred if you have many generate
pragmas in your project.
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