golangloader

An improved translation package to help developers to customize the localization of the field names.  Furthermore, it also supports loading from .json files.

Note: Translation files is rewritten from go-playground/validator

Basic Usage

Create a json file on ./lang/en/validation.json in your project:

{
    "attributes": {
        "Username": "Username",
        "Password": "Password"
    }
}

Example of how to use golangloader with go-playground/validator

package main

import (
	"fmt"

	"github.com/go-playground/validator/v10"
	"github.com/wolftotem4/golangloader"
	"github.com/wolftotem4/golangloader/defaults"
)

func main() {
	// Assign the fallback locale
	fallback := "en"

	// Create a new translator and load the default translations
	ut, err := defaults.Locales.NewUniversalTranslator(fallback)
	if err != nil {
		panic(err)
	}

	// Load more translations from .json files
	err = golangloader.LoadTranslate("lang", ut)
	if err != nil {
		panic(err)
	}

	// Uncomment this line to change the field name key
	// golangloader.FieldNameKey = "validation.attributes.%s"

	// Register the translator
	validate := validator.New()
	err = defaults.Locales.RegisterValidateTranslation(validate, ut)
	if err != nil {
		panic(err)
	}

	// Validate required fields
	err = validate.Struct(struct {
		Username string `validate:"required"`
		Password string `validate:"required"`
	}{
		Username: "",
		Password: "",
	})
	validateErrors := err.(validator.ValidationErrors)

	/* Output:

	Username: Username is a required field
	Password: Password is a required field

	*/
	{
		trans, _ := ut.GetTranslator("en")
		fmt.Println(validateErrors.Translate(trans))
	}

	/* Output:

	Username: 會員名稱為必填欄位
	Password: 密碼為必填欄位

	*/
	{
		trans, _ := ut.GetTranslator("zh_Hant_TW")
		fmt.Println(validateErrors.Translate(trans))
	}
}