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article.go
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article.go
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/*
文章板块
*/
package gopher
import (
"fmt"
"net/http"
"strings"
"time"
"github.com/gorilla/mux"
"github.com/jimmykuu/wtforms"
"gopkg.in/mgo.v2"
"gopkg.in/mgo.v2/bson"
)
// URL: /article/new
// 新建文章
func newArticleHandler(handler *Handler) {
var categories []ArticleCategory
c := handler.DB.C(ARTICLE_CATEGORIES)
c.Find(nil).All(&categories)
var choices []wtforms.Choice
for _, category := range categories {
choices = append(choices, wtforms.Choice{Value: category.Id_.Hex(), Label: category.Name})
}
form := wtforms.NewForm(
wtforms.NewHiddenField("html", ""),
wtforms.NewTextField("title", "标题", "", wtforms.Required{}),
wtforms.NewTextField("original_source", "原始出处", "", wtforms.Required{}),
wtforms.NewTextField("original_url", "原始链接", "", wtforms.URL{}),
wtforms.NewSelectField("category", "分类", choices, ""),
)
if handler.Request.Method == "POST" && form.Validate(handler.Request) {
user, _ := currentUser(handler)
c = handler.DB.C(CONTENTS)
id_ := bson.NewObjectId()
html := form.Value("html")
html = strings.Replace(html, "<pre>", `<pre class="prettyprint linenums">`, -1)
categoryId := bson.ObjectIdHex(form.Value("category"))
err := c.Insert(&Article{
Content: Content{
Id_: id_,
Type: TypeArticle,
Title: form.Value("title"),
CreatedBy: user.Id_,
CreatedAt: time.Now(),
},
Id_: id_,
CategoryId: categoryId,
OriginalSource: form.Value("original_source"),
OriginalUrl: form.Value("original_url"),
})
if err != nil {
fmt.Println("newArticleHandler:", err.Error())
return
}
http.Redirect(handler.ResponseWriter, handler.Request, "/a/"+id_.Hex(), http.StatusFound)
return
}
handler.renderTemplate("article/form.html", BASE, map[string]interface{}{
"form": form,
"title": "新建",
"action": "/article/new",
"active": "article",
})
}
// URL: /article/go/{categoryId}
// 文章分类列表
func articlesInCategoryHandler(handler *Handler) {
vars := mux.Vars(handler.Request)
categoryId := vars["categoryId"]
c := handler.DB.C(ARTICLE_CATEGORIES)
category := ArticleCategory{}
err := c.Find(bson.M{"_id": bson.ObjectIdHex(categoryId)}).One(&category)
if err != nil {
message(handler, "没有这个目录", "请联系管理员创建这个目录", "error")
return
}
page, err := getPage(handler.Request)
if err != nil {
message(handler, "页码错误", "页码错误", "error")
return
}
c = handler.DB.C(CONTENTS)
pagination := NewPagination(c.Find(bson.M{"categoryid": bson.ObjectIdHex(categoryId), "content.type": TypeArticle}).Sort("-content.createdat"), "/", 20)
var articles []Article
query, err := pagination.Page(page)
if err != nil {
message(handler, "没有找到页面", "没有找到页面", "error")
return
}
err = query.(*mgo.Query).All(&articles)
if err != nil {
fmt.Println(err)
}
handler.renderTemplate("/article/index.html", BASE, map[string]interface{}{
"articles": articles,
"type": category.Name,
})
}
// URL: /articles
// 列出所有文章
func listArticlesHandler(handler *Handler) {
page, err := getPage(handler.Request)
if err != nil {
message(handler, "页码错误", "页码错误", "error")
return
}
// var hotNodes []Node
// c := db.C("nodes")
// c.Find(bson.M{"topiccount": bson.M{"$gt": 0}}).Sort("-topiccount").Limit(10).All(&hotNodes)
// var status Status
// c = db.C("status")
// c.Find(nil).One(&status)
c := handler.DB.C(CONTENTS)
pagination := NewPagination(c.Find(bson.M{"content.type": TypeArticle}).Sort("-content.createdat"), "/articles", PerPage)
var articles []Article
query, err := pagination.Page(page)
if err != nil {
message(handler, "页码错误", "页码错误", "error")
return
}
query.(*mgo.Query).All(&articles)
handler.renderTemplate("article/index.html", BASE, map[string]interface{}{
"articles": articles,
"pagination": pagination,
"page": page,
"active": "article",
})
}
// URL: /a{articleId}/redirect
// 转到原文链接
func redirectArticleHandler(handler *Handler) {
vars := mux.Vars(handler.Request)
articleId := vars["articleId"]
if !bson.IsObjectIdHex(articleId) {
http.NotFound(handler.ResponseWriter, handler.Request)
return
}
c := handler.DB.C(CONTENTS)
article := new(Article)
err := c.Find(bson.M{"_id": bson.ObjectIdHex(articleId)}).One(&article)
if err != nil {
fmt.Println("redirectArticleHandler:", err.Error())
return
}
c.UpdateId(bson.ObjectIdHex(articleId), bson.M{"$inc": bson.M{"content.hits": 1}})
http.Redirect(handler.ResponseWriter, handler.Request, article.OriginalUrl, http.StatusFound)
}
// URL: /a/{articleId}
// 显示文章
func showArticleHandler(handler *Handler) {
vars := mux.Vars(handler.Request)
articleId := vars["articleId"]
if !bson.IsObjectIdHex(articleId) {
http.NotFound(handler.ResponseWriter, handler.Request)
return
}
c := handler.DB.C(CONTENTS)
article := Article{}
err := c.Find(bson.M{"_id": bson.ObjectIdHex(articleId)}).One(&article)
if err != nil {
fmt.Println("showArticleHandler:", err.Error())
return
}
handler.renderTemplate("article/show.html", BASE, map[string]interface{}{
"article": article,
"active": "article",
})
}
// URL: /a/{articleId}/edit
// 编辑主题
func editArticleHandler(handler *Handler) {
user, _ := currentUser(handler)
articleId := mux.Vars(handler.Request)["articleId"]
if !bson.IsObjectIdHex(articleId) {
http.NotFound(handler.ResponseWriter, handler.Request)
return
}
c := handler.DB.C(CONTENTS)
var article Article
err := c.Find(bson.M{"_id": bson.ObjectIdHex(articleId)}).One(&article)
if err != nil {
message(handler, "没有该文章", "没有该文章,不能编辑", "error")
return
}
if !article.CanEdit(user.Username, handler.DB) {
message(handler, "没用该权限", "对不起,你没有权限编辑该文章", "error")
return
}
var categorys []ArticleCategory
c = handler.DB.C(ARTICLE_CATEGORIES)
c.Find(nil).All(&categorys)
var choices []wtforms.Choice
for _, category := range categorys {
choices = append(choices, wtforms.Choice{Value: category.Id_.Hex(), Label: category.Name})
}
form := wtforms.NewForm(
wtforms.NewHiddenField("html", ""),
wtforms.NewTextField("title", "标题", article.Title, wtforms.Required{}),
wtforms.NewTextField("original_source", "原始出处", article.OriginalSource, wtforms.Required{}),
wtforms.NewTextField("original_url", "原始链接", article.OriginalUrl, wtforms.URL{}),
wtforms.NewSelectField("category", "分类", choices, article.CategoryId.Hex()),
)
if handler.Request.Method == "POST" {
if form.Validate(handler.Request) {
categoryId := bson.ObjectIdHex(form.Value("category"))
c = handler.DB.C(CONTENTS)
err = c.Update(bson.M{"_id": article.Id_}, bson.M{"$set": bson.M{
"categoryid": categoryId,
"originalsource": form.Value("original_source"),
"originalurl": form.Value("original_url"),
"content.title": form.Value("title"),
"content.updatedby": user.Id_.Hex(),
"content.updatedat": time.Now(),
}})
if err != nil {
fmt.Println("update error:", err.Error())
return
}
http.Redirect(handler.ResponseWriter, handler.Request, "/a/"+article.Id_.Hex(), http.StatusFound)
return
}
}
handler.renderTemplate("article/form.html", BASE, map[string]interface{}{
"form": form,
"title": "编辑",
"action": "/a/" + articleId + "/edit",
"active": "article",
})
}
// URL: /a/{articleId}/delete
// 删除文章
func deleteArticleHandler(handler *Handler) {
user, _ := currentUser(handler)
vars := mux.Vars(handler.Request)
articleId := vars["articleId"]
if !bson.IsObjectIdHex(articleId) {
http.NotFound(handler.ResponseWriter, handler.Request)
return
}
c := handler.DB.C(CONTENTS)
article := new(Article)
err := c.Find(bson.M{"_id": bson.ObjectIdHex(articleId)}).One(&article)
if err != nil {
fmt.Println("deleteArticleHandler:", err.Error())
return
}
if article.CanDelete(user.Username, handler.DB) {
c.Remove(bson.M{"_id": article.Id_})
c = handler.DB.C(COMMENTS)
c.Remove(bson.M{"contentid": article.Id_})
http.Redirect(handler.ResponseWriter, handler.Request, "/articles", http.StatusFound)
}
}