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handler.go
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/
handler.go
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package main
import (
"net/http"
"html/template"
"log"
"database/sql"
"strconv"
"github.com/gorilla/mux"
)
func Error(w http.ResponseWriter, code int, err error) {
go log.Printf("%v", err)
http.Error(w, http.StatusText(code), code)
}
func PostList(w http.ResponseWriter, r *http.Request) {
var err error
var offset int
var t *template.Template
vars := mux.Vars(r)
listPosts := ListPosts{Feeds: feeds}
listPosts.Pager, offset, err = Paginate(r)
if err != nil {
Error(w, http.StatusInternalServerError, err)
return
}
if tagName, ok := vars["name"]; ok {
listPosts.TagName = tagName
listPosts.Posts, err = GetPostsByTag(tagName, offset)
} else {
listPosts.TagName = ""
listPosts.Posts, err = GetAllPosts(offset)
}
t, err = template.ParseFiles("templates/list.html")
if err == nil {
if err == nil {
err = t.Execute(w, &listPosts)
}
}
if err != nil {
Error(w, http.StatusInternalServerError, err)
}
}
func PostDetail(w http.ResponseWriter, r *http.Request) {
var err error
var detailPost = DetailPost{Feeds: feeds}
vars := mux.Vars(r)
slug := vars["slug"]
id, err := strconv.Atoi(vars["id"])
if err != nil {
http.Error(w, "Bad request: Invalid blog id.", http.StatusBadRequest)
return
}
t, err := template.ParseFiles("templates/detail.html")
if err == nil {
detailPost.Post, err = GetSinglePost(id, slug)
if err == nil {
detailPost.Comments, err = AllPostComments(id)
if err == nil {
err = t.Execute(w, &detailPost)
}
} else if err == sql.ErrNoRows {
Error(w, http.StatusNotFound, err)
return
}
}
if err != nil {
Error(w, http.StatusInternalServerError, err)
}
}
func PostComment(w http.ResponseWriter, r *http.Request) {
var t *template.Template
vars := mux.Vars(r)
comment := map[string]interface{} {
"success": false,
"post": &Post{},
"feeds": feeds,
}
id, err := strconv.Atoi(vars["id"])
if err != nil {
http.Error(w, "Bad request: Invalid blog id.", http.StatusBadRequest)
return
}
t, err = template.ParseFiles("templates/comment.html")
if err != nil {
Error(w, http.StatusInternalServerError, err)
return
}
comment["post"], err = GetPostById(id)
if err != nil {
if err == sql.ErrNoRows {
Error(w, http.StatusNotFound, err)
} else {
Error(w, http.StatusInternalServerError, err)
}
return
}
name := r.PostFormValue("name")
body := r.PostFormValue("body")
if (len(name) > 0) && (len(body) > 0) {
err = CreateComment(id, name, body)
if err == nil {
comment["success"] = true
}
}
err = t.Execute(w, &comment)
if err != nil {
Error(w, http.StatusInternalServerError, err)
}
}