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14.5 Multi-language support

We introduced in Chapter internationalization and localization, we developed a go-i18n library, the library this section we will integrate beego frame inside, making our framework supports internationalization and localization.

I18n integration

beego global variable is set as follows:

Translation i18n.IL
Lang string // set the language pack, zh, en
LangPath string // set the language pack location

Multi-language function to initialize:

func InitLang(){
	beego.Translation:=i18n.NewLocale()
	beego.Translation.LoadPath(beego.LangPath)
	beego.Translation.SetLocale(beego.Lang)
}

In order to facilitate more direct call in the template language pack, we have designed three functions to handle the response of multiple languages:

beegoTplFuncMap["Trans"] = i18n.I18nT
beegoTplFuncMap["TransDate"] = i18n.I18nTimeDate
beegoTplFuncMap["TransMoney"] = i18n.I18nMoney

func I18nT(args ...interface{}) string {
    ok := false
    var s string
    if len(args) == 1 {
        s, ok = args[0].(string)
    }
    if !ok {
        s = fmt.Sprint(args...)
    }
    return beego.Translation.Translate(s)
}

func I18nTimeDate(args ...interface{}) string {
    ok := false
    var s string
    if len(args) == 1 {
        s, ok = args[0].(string)
    }
    if !ok {
        s = fmt.Sprint(args...)
    }
    return beego.Translation.Time(s)
}	

func I18nMoney(args ...interface{}) string {
    ok := false
    var s string
    if len(args) == 1 {
        s, ok = args[0].(string)
    }
    if !ok {
        s = fmt.Sprint(args...)
    }
    return beego.Translation.Money(s)
}

Use multi-language development

  1. Set the location of language and language packs, then initialize the i18n objects:

     beego.Lang = "zh"
 beego.LangPath = "views/lang"
 beego.InitLang()

  2. Design Multi-language Pack

    The above talked about how to initialize multi language pack, the language pack is now designing multi, multi-language package is json file, as described in Chapter X, we need to design a document on LangPath following example zh.json or en.json

     # zh.json

 {
 "zh": {
     "submit": "提交",
     "create": "创建"
     }
 }
 
 #en.json
 
 {
 "en": {
     "submit": "Submit",
     "create": "Create"
     }
 }

  3. Use the Language Pack

    We can call the controller to get the response of the translation language translation, as follows:

     func (this *MainController) Get() {
 	this.Data["create"] = beego.Translation.Translate("create")
 	this.TplNames = "index.tpl"
 }

    We can also directly call response in the template translation function:

     // Direct Text translation
 {{.create | Trans}}

 // Time to translate
 {{.time | TransDate}}

 // Currency translation
 {{.money | TransMoney}}

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