Golang NewSelectField Examples

Example #1

File: site.go Project: cocoa-alex/gopher

// URL: /site/new
// 提交站点
func newSiteHandler(w http.ResponseWriter, r *http.Request) {
	user, ok := currentUser(r)
	if !ok {
		http.Redirect(w, r, "/signin", http.StatusFound)
		return
	}

	var categories []SiteCategory
	c := db.C("sitecategories")
	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.NewTextField("name", "网站名称", "", wtforms.Required{}),
		wtforms.NewTextField("url", "地址", "", wtforms.Required{}, wtforms.URL{}),
		wtforms.NewTextArea("description", "描述", ""),
		wtforms.NewSelectField("category", "分类", choices, "", wtforms.Required{}),
	)

	if r.Method == "POST" {
		if !form.Validate(r) {
			renderTemplate(w, r, "site/form.html", map[string]interface{}{"form": form, "action": "/site/new", "title": "新建"})
			return
		}

		var site Site
		c = db.C("sites")
		err := c.Find(bson.M{"url": form.Value("url")}).One(&site)
		if err == nil {
			form.AddError("url", "该站点已经有了")
			renderTemplate(w, r, "site/form.html", map[string]interface{}{"form": form, "action": "/site/new", "title": "新建"})
			return
		}

		Id_ := bson.NewObjectId()

		c = db.C("sites")

		c.Insert(&Site{
			Id_:         Id_,
			Name:        form.Value("name"),
			Url:         form.Value("url"),
			Description: form.Value("description"),
			CategoryId:  bson.ObjectIdHex(form.Value("category")),
			UserId:      user.Id_,
		})

		http.Redirect(w, r, "/sites#site-"+Id_.Hex(), http.StatusFound)
		return
	}

	renderTemplate(w, r, "site/form.html", map[string]interface{}{"form": form, "action": "/site/new", "title": "新建"})
}

Example #2

File: package.go Project: cgolang/gopher

// URL: /package/new
// 新建第三方包
func newPackageHandler(w http.ResponseWriter, r *http.Request) {
	user, ok := currentUser(r)
	if !ok {
		http.Redirect(w, r, "/signin", http.StatusFound)
		return
	}

	var categories []PackageCategory

	c := db.C("packagecategories")
	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("name", "名称", "", wtforms.Required{}),
		wtforms.NewSelectField("category_id", "分类", choices, ""),
		wtforms.NewTextField("url", "网址", "", wtforms.Required{}, wtforms.URL{}),
		wtforms.NewTextArea("description", "描述", "", wtforms.Required{}),
	)

	if r.Method == "POST" && form.Validate(r) {
		c = db.C("packages")
		id := bson.NewObjectId()
		categoryId := bson.ObjectIdHex(form.Value("category_id"))
		c.Insert(&Package{
			Id_:        id,
			UserId:     user.Id_,
			CategoryId: categoryId,
			Name:       form.Value("name"),
			Url:        form.Value("url"),
			Markdown:   form.Value("description"),
			Html:       template.HTML(form.Value("html")),
			CreatedAt:  time.Now(),
		})

		c = db.C("packagecategories")
		// 增加数量
		c.Update(bson.M{"_id": categoryId}, bson.M{"$inc": bson.M{"packagecount": 1}})

		http.Redirect(w, r, "/p/"+id.Hex(), http.StatusFound)
		return
	}
	renderTemplate(w, r, "package/form.html", map[string]interface{}{"form": form, "title": "提交第三方包", "action": "/package/new"})
}

Example #3

File: package.go Project: cgolang/gopher

// URL: /package/{packageId}/edit
// 编辑第三方包
func editPackageHandler(w http.ResponseWriter, r *http.Request) {
	user, ok := currentUser(r)
	if !ok {
		http.Redirect(w, r, "/signin", http.StatusFound)
		return
	}

	vars := mux.Vars(r)
	packageId := vars["packageId"]

	package_ := Package{}
	c := db.C("packages")
	err := c.Find(bson.M{"_id": bson.ObjectIdHex(packageId)}).One(&package_)

	if err != nil {
		message(w, r, "没有该包", "没有该包", "error")
		return
	}

	if !package_.CanEdit(user.Username) {
		message(w, r, "没有权限", "你没有权限编辑该包", "error")
		return
	}

	var categories []PackageCategory

	c = db.C("packagecategories")
	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", string(package_.Html)),
		wtforms.NewTextField("name", "名称", package_.Name, wtforms.Required{}),
		wtforms.NewSelectField("category_id", "分类", choices, package_.CategoryId.Hex()),
		wtforms.NewTextField("url", "网址", package_.Url, wtforms.Required{}, wtforms.URL{}),
		wtforms.NewTextArea("description", "描述", package_.Markdown, wtforms.Required{}),
	)

	if r.Method == "POST" && form.Validate(r) {
		c = db.C("packages")
		categoryId := bson.ObjectIdHex(form.Value("category_id"))
		c.Update(bson.M{"_id": package_.Id_}, bson.M{"$set": bson.M{
			"categoryid": categoryId,
			"name":       form.Value("name"),
			"url":        form.Value("url"),
			"markdown":   form.Value("description"),
			"html":       template.HTML(form.Value("html")),
		}})

		c = db.C("packagecategories")
		if categoryId != package_.CategoryId {
			// 减少原来类别的包数量
			c.Update(bson.M{"_id": package_.CategoryId}, bson.M{"$inc": bson.M{"packagecount": -1}})
			// 增加新类别的包数量
			c.Update(bson.M{"_id": categoryId}, bson.M{"$inc": bson.M{"packagecount": 1}})
		}

		http.Redirect(w, r, "/p/"+package_.Id_.Hex(), http.StatusFound)
		return
	}
	renderTemplate(w, r, "package/form.html", map[string]interface{}{"form": form, "title": "编辑第三方包", "action": "/p/" + packageId + "/edit"})
}

Example #4

File: topic.go Project: cocoa-alex/gopher

// URL: /topic/new
// 新建主题
func newTopicHandler(w http.ResponseWriter, r *http.Request) {
	if _, ok := currentUser(r); !ok {
		http.Redirect(w, r, "/signin", http.StatusFound)
		return
	}

	nodeId := mux.Vars(r)["node"]

	var nodes []Node
	c := db.C("nodes")
	c.Find(nil).All(&nodes)

	var choices []wtforms.Choice

	for _, node := range nodes {
		choices = append(choices, wtforms.Choice{Value: node.Id_.Hex(), Label: node.Name})
	}

	form := wtforms.NewForm(
		wtforms.NewHiddenField("html", ""),
		wtforms.NewSelectField("node", "节点", choices, nodeId),
		wtforms.NewTextArea("title", "标题", "", &wtforms.Required{}),
		wtforms.NewTextArea("content", "内容", ""),
	)

	if r.Method == "POST" && form.Validate(r) {
		session, _ := store.Get(r, "user")
		username, _ := session.Values["username"]
		username = username.(string)

		user := User{}
		c = db.C("users")
		c.Find(bson.M{"username": username}).One(&user)

		c = db.C("topics")

		Id_ := bson.NewObjectId()

		now := time.Now()

		html := form.Value("html")
		html = strings.Replace(html, "<pre>", `<pre class="prettyprint linenums">`, -1)

		nodeId := bson.ObjectIdHex(form.Value("node"))
		err := c.Insert(&Topic{
			Id_:             Id_,
			NodeId:          nodeId,
			UserId:          user.Id_,
			Title:           form.Value("title"),
			Markdown:        form.Value("content"),
			Html:            template.HTML(html),
			CreatedAt:       now,
			LatestRepliedAt: now,
		})

		if err != nil {
			panic(err)
		}

		// 增加Node.TopicCount
		c = db.C("nodes")
		c.Update(bson.M{"_id": nodeId}, bson.M{"$inc": bson.M{"topiccount": 1}})

		c = db.C("status")
		var status Status
		c.Find(nil).One(&status)

		c.Update(bson.M{"_id": status.Id_}, bson.M{"$inc": bson.M{"topiccount": 1}})

		http.Redirect(w, r, "/t/"+Id_.Hex(), http.StatusFound)
		return
	}

	renderTemplate(w, r, "topic/form.html", map[string]interface{}{"form": form, "title": "新建", "action": "/topic/new"})
}

Example #5

File: topic.go Project: cocoa-alex/gopher

// URL: /t/{topicId}/edit
// 编辑主题
func editTopicHandler(w http.ResponseWriter, r *http.Request) {
	user, ok := currentUser(r)
	if !ok {
		http.Redirect(w, r, "/signin", http.StatusFound)
		return
	}

	topicId := mux.Vars(r)["topicId"]

	c := db.C("topics")
	var topic Topic
	err := c.Find(bson.M{"_id": bson.ObjectIdHex(topicId)}).One(&topic)

	if err != nil {
		message(w, r, "没有该主题", "没有该主题,不能编辑", "error")
		return
	}

	if !topic.CanEdit(user.Username) {
		message(w, r, "没用该权限", "对不起,你没有权限编辑该主题", "error")
		return
	}

	var nodes []Node
	c = db.C("nodes")
	c.Find(nil).All(&nodes)

	var choices []wtforms.Choice

	for _, node := range nodes {
		choices = append(choices, wtforms.Choice{Value: node.Id_.Hex(), Label: node.Name})
	}

	form := wtforms.NewForm(
		wtforms.NewHiddenField("html", ""),
		wtforms.NewSelectField("node", "节点", choices, topic.NodeId.Hex()),
		wtforms.NewTextArea("title", "标题", topic.Title, &wtforms.Required{}),
		wtforms.NewTextArea("content", "内容", topic.Markdown),
	)

	content := topic.Markdown
	html := topic.Html

	if r.Method == "POST" {
		if form.Validate(r) {
			html := form.Value("html")
			html = strings.Replace(html, "<pre>", `<pre class="prettyprint linenums">`, -1)

			nodeId := bson.ObjectIdHex(form.Value("node"))
			c = db.C("topics")
			c.Update(bson.M{"_id": topic.Id_}, bson.M{"$set": bson.M{
				"nodeid":    nodeId,
				"title":     form.Value("title"),
				"markdown":  form.Value("content"),
				"html":      template.HTML(html),
				"updatedat": time.Now(),
				"updatedby": user.Id_,
			}})

			// 如果两次的节点不同,更新节点的主题数量

			if topic.NodeId != nodeId {
				c = db.C("nodes")
				c.Update(bson.M{"_id": topic.NodeId}, bson.M{"$inc": bson.M{"topiccount": -1}})
				c.Update(bson.M{"_id": nodeId}, bson.M{"$inc": bson.M{"topiccount": 1}})
			}

			http.Redirect(w, r, "/t/"+topic.Id_.Hex(), http.StatusFound)
			return
		}

		content = form.Value("content")
		html = template.HTML(form.Value("html"))
	}

	renderTemplate(w, r, "topic/form.html", map[string]interface{}{"form": form, "title": "编辑", "action": "/t/" + topicId + "/edit", "html": html, "content": content})
}

Example #6

File: article.go Project: cocoa-alex/gopher

// URL: /article/new
// 新建文章
func newArticleHandler(w http.ResponseWriter, r *http.Request) {
	if _, ok := currentUser(r); !ok {
		http.Redirect(w, r, "/signin", http.StatusFound)
		return
	}

	var categories []ArticleCategory
	c := db.C("articlecategories")
	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.NewTextArea("content", "内容", "", 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 r.Method == "POST" && form.Validate(r) {
		session, _ := store.Get(r, "user")
		username, _ := session.Values["username"]
		username = username.(string)

		user := User{}
		c = db.C("users")
		c.Find(bson.M{"username": username}).One(&user)

		c = db.C("articles")

		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{
			Id_:            Id_,
			CategoryId:     categoryId,
			UserId:         user.Id_,
			Title:          form.Value("title"),
			Markdown:       form.Value("content"),
			Html:           template.HTML(html),
			OriginalSource: form.Value("original_source"),
			OriginalUrl:    form.Value("original_url"),
			CreatedAt:      time.Now(),
		})

		if err != nil {
			panic(err)
		}

		http.Redirect(w, r, "/a/"+Id_.Hex(), http.StatusFound)
		return
	}

	renderTemplate(w, r, "article/form.html", map[string]interface{}{"form": form, "title": "新建", "action": "/article/new"})
}

Example #7

File: article.go Project: cocoa-alex/gopher

// URL: /a/{articleId}/edit
// 编辑主题
func editArticleHandler(w http.ResponseWriter, r *http.Request) {
	user, ok := currentUser(r)
	if !ok {
		http.Redirect(w, r, "/signin", http.StatusFound)
		return
	}

	articleId := mux.Vars(r)["articleId"]

	c := db.C("articles")
	var article Article
	err := c.Find(bson.M{"_id": bson.ObjectIdHex(articleId)}).One(&article)

	if err != nil {
		message(w, r, "没有该文章", "没有该文章,不能编辑", "error")
		return
	}

	if !article.CanEdit(user.Username) {
		message(w, r, "没用该权限", "对不起,你没有权限编辑该文章", "error")
		return
	}

	var categorys []ArticleCategory
	c = db.C("articlecategories")
	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.NewTextArea("content", "内容", article.Markdown, 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()),
	)

	content := article.Markdown
	html := article.Html

	if r.Method == "POST" {
		if form.Validate(r) {
			html := form.Value("html")
			html = strings.Replace(html, "<pre>", `<pre class="prettyprint linenums">`, -1)

			categoryId := bson.ObjectIdHex(form.Value("category"))
			c = db.C("articles")
			c.Update(bson.M{"_id": article.Id_}, bson.M{"$set": bson.M{
				"categoryid":     categoryId,
				"title":          form.Value("title"),
				"originalsource": form.Value("original_source"),
				"originalurl":    form.Value("original_url"),
				"markdown":       form.Value("content"),
				"html":           template.HTML(html),
			}})

			http.Redirect(w, r, "/a/"+article.Id_.Hex(), http.StatusFound)
			return
		}

		content = form.Value("content")
		html = template.HTML(form.Value("html"))
	}

	renderTemplate(w, r, "article/form.html", map[string]interface{}{"form": form, "title": "编辑", "action": "/a/" + articleId + "/edit", "html": html, "content": content})
}

Example #8

File: site.go Project: cocoa-alex/gopher

// URL: /site/{siteId}/edit
// 修改提交过的站点信息,提交者自己或者管理员可以修改
func editSiteHandler(w http.ResponseWriter, r *http.Request) {
	user, ok := currentUser(r)
	if !ok {
		http.Redirect(w, r, "/signin", http.StatusFound)
		return
	}

	siteId := mux.Vars(r)["siteId"]

	var site Site
	c := db.C("sites")

	err := c.Find(bson.M{"_id": bson.ObjectIdHex(siteId)}).One(&site)

	if err != nil {
		message(w, r, "错误的连接", "错误的连接", "error")
		return
	}

	if !site.CanEdit(user.Username) {
		message(w, r, "没有权限", "你没有权限可以修改站点", "error")
		return
	}

	var categories []SiteCategory
	c = db.C("sitecategories")
	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.NewTextField("name", "网站名称", site.Name, wtforms.Required{}),
		wtforms.NewTextField("url", "地址", site.Url, wtforms.Required{}, wtforms.URL{}),
		wtforms.NewTextArea("description", "描述", site.Description),
		wtforms.NewSelectField("category", "分类", choices, site.CategoryId.Hex(), wtforms.Required{}),
	)

	if r.Method == "POST" && form.Validate(r) {
		// 检查是否用重复
		var site2 Site
		c = db.C("sites")
		err := c.Find(bson.M{"url": form.Value("url"), "_id": bson.M{"$ne": site.Id_}}).One(&site2)
		if err == nil {
			form.AddError("url", "该站点已经有了")
			renderTemplate(w, r, "site/form.html", map[string]interface{}{"form": form, "action": "/site/" + siteId + "/edit", "title": "编辑"})
			return
		}

		c.Update(bson.M{"_id": site.Id_},
			bson.M{"$set": bson.M{
				"name":        form.Value("name"),
				"url":         form.Value("url"),
				"description": form.Value("description"),
				"categoryid":  bson.ObjectIdHex(form.Value("category")),
			},
			})

		http.Redirect(w, r, "/sites#site-"+site.Id_.Hex(), http.StatusFound)
		return
	}

	renderTemplate(w, r, "site/form.html", map[string]interface{}{"form": form, "action": "/site/" + siteId + "/edit", "title": "编辑"})
}