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/
base.go
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/
base.go
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// Copyright 2013 Beego Web authors
//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
// Package routers implemented controller methods of beego.
package actions
import (
"strings"
"time"
"github.com/Unknwon/i18n"
"github.com/go-xweb/xweb"
)
var langTypes []*langType // Languages are supported.
// langType represents a language type.
type langType struct {
Lang, Name string
}
// baseRouter implemented global settings for all other routers.
type baseAction struct {
*xweb.Action
i18n.Locale
start time.Time
}
// Prepare implemented Prepare method for baseRouter.
func (this *baseAction) Init() {
this.start = time.Now()
// Setting properties.
this.AddTmplVars(&xweb.T{
"PageStartTime": time.Now(),
"loadtimes": func() int64 {
return int64(time.Now().Sub(this.start) / time.Millisecond)
},
})
// Redirect to make URL clean.
if this.setLangVer() {
i := strings.Index(this.Request.RequestURI, "?")
this.Redirect(this.Request.RequestURI[:i], 302)
return
}
}
// setLangVer sets site language version.
func (this *baseAction) setLangVer() bool {
isNeedRedir := false
hasCookie := false
// 1. Check URL arguments.
lang := this.GetString("lang")
// 2. Get language information from cookies.
if len(lang) == 0 {
cookie, _ := this.GetCookie("lang")
if cookie != nil {
lang = cookie.Value
hasCookie = true
}
} else {
isNeedRedir = true
}
// Check again in case someone modify by purpose.
if !i18n.IsExist(lang) {
lang = ""
isNeedRedir = false
hasCookie = false
}
// 3. Get language information from 'Accept-Language'.
if len(lang) == 0 {
al := this.Request.Header.Get("Accept-Language")
if len(al) > 4 {
al = al[:5] // Only compare first 5 letters.
if i18n.IsExist(al) {
lang = al
}
}
}
// 4. Default language is English.
if len(lang) == 0 {
lang = "en-US"
isNeedRedir = false
}
curLang := langType{
Lang: lang,
}
// Save language information in cookies.
if !hasCookie {
cookie := xweb.NewCookie("lang", curLang.Lang, 1<<31-1)
this.SetCookie(cookie)
}
restLangs := make([]*langType, 0, len(langTypes)-1)
for _, v := range langTypes {
if lang != v.Lang {
restLangs = append(restLangs, v)
} else {
curLang.Name = v.Name
}
}
// Set language properties.
this.AddTmplVars(&xweb.T{
"Lang": curLang.Lang,
"CurLang": curLang.Name,
"RestLangs": restLangs,
})
this.Lang = lang
return isNeedRedir
}