func ArticlePermaLinkHandler(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
vars := mux.Vars(r)
id, err := strconv.ParseInt(vars["id"], 10, 64)
if err != nil {
core.HandleError(c, w, err)
return
}
article, err := GetArticleById(c, id, true)
if err != nil {
core.HandleNotFound(c, w)
return
}
if !article.IsPublic {
user := auth.CurrentUser(c)
if !user.IsAdmin {
core.HandleAuthRequired(c, w)
return
}
}
redirectTo, err := article.URL()
if err != nil {
core.HandleNotFound(c, w)
return
}
http.Redirect(w, r, redirectTo.Path, 302)
}
func ArticlePageHandler(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
user := auth.CurrentUser(c)
vars := mux.Vars(r)
page, err := strconv.ParseInt(vars["page"], 10, 32)
if err != nil {
page = 1
}
q := NewArticleQuery().Order("-CreatedOn")
if !user.IsAdmin {
q = q.Filter("IsPublic=", true)
}
p := NewArticlePager(c, q, int(page))
articles, err := GetArticles(c, p)
if err != nil {
core.HandleError(c, w, err)
return
}
context := tmplt.Context{
"articles": articles,
"pager": p,
}
core.RenderTemplate(c, w, context,
"templates/blog/articleList.html", "templates/pager.html", LAYOUT)
}
func ArticleHandler(w http.ResponseWriter, r *http.Request) {
c := appengine.NewContext(r)
user := auth.CurrentUser(c)
vars := mux.Vars(r)
id, err := strconv.ParseInt(vars["id"], 10, 64)
if err != nil {
core.HandleError(c, w, err)
return
}
article, err := GetArticleById(c, id, !user.IsAdmin)
if err != nil {
core.HandleNotFound(c, w)
return
}
if !article.IsPublic && !user.IsAdmin {
core.HandleAuthRequired(c, w)
return
}
viewedArticles := make([]string, 0)
if cookie, err := r.Cookie("viewedArticles"); err != http.ErrNoCookie {
viewedArticles = strings.Split(cookie.Value, ",")
}
articleID := strconv.FormatInt(article.Key().IntID(), 32)
if !isViewedArticle(viewedArticles, articleID) {
viewedArticles = append(viewedArticles, articleID)
http.SetCookie(w, &http.Cookie{
Name: "viewedArticles",
Value: strings.Join(viewedArticles, ","),
Path: "/",
Expires: time.Now().Add(time.Duration(30*24) * time.Hour),
})
if err := ChangeArticleViewsCount(c, article.Key(), +1); err != nil {
core.HandleError(c, w, err)
return
}
}
context := tmplt.Context{"article": article}
core.RenderTemplate(c, w, context, "templates/blog/article.html", LAYOUT)
}
func RenderTemplate(c appengine.Context, w http.ResponseWriter, context tmplt.Context, templateNames ...string) {
if len(templateNames) == 0 {
panic("expected at least 1 template, but got 0")
}
newFunc := func() (*template.Template, error) {
var err error
newT := template.New(path.Base(templateNames[len(templateNames)-1]))
newT = AddTemplateFuncs(newT)
newT, err = newT.ParseFiles(templateNames...)
if err != nil {
return nil, err
}
return newT, nil
}
t, err := tmplt.Holder.Get(strings.Join(templateNames, ","), newFunc)
if err != nil {
HandleError(c, w, err)
return
}
if context == nil {
context = tmplt.Context{}
}
context["appengineContext"] = c
context["user"] = auth.CurrentUser(c)
if w.Header().Get("content-type") == "" {
w.Header().Add("content-type", "text/html")
}
buf := &bytes.Buffer{}
err = t.Execute(buf, context)
if err != nil {
HandleError(c, w, err)
return
}
io.Copy(w, buf)
}