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ad.go
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ad.go
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package gopher
import (
"net/http"
"strconv"
"github.com/gorilla/mux"
"github.com/jimmykuu/wtforms"
"gopkg.in/mgo.v2/bson"
)
// URL: /admin/ads
// 广告列表
func adminListAdsHandler(handler *Handler) {
var ads []AD
c := handler.DB.C(ADS)
c.Find(nil).Sort("index").All(&ads)
handler.renderTemplate("admin/ads.html", ADMIN, map[string]interface{}{
"ads": ads,
})
}
// URL: /admin/ad/new
// 添加广告
func adminNewAdHandler(handler *Handler) {
choices := []wtforms.Choice{
wtforms.Choice{"top0", "最顶部"},
wtforms.Choice{"top", "顶部"},
wtforms.Choice{"frontpage", "首页"},
wtforms.Choice{"content", "主题内"},
wtforms.Choice{"2cols", "2列宽度"},
wtforms.Choice{"3cols", "3列宽度"},
wtforms.Choice{"4cols", "4列宽度"},
}
form := wtforms.NewForm(
wtforms.NewSelectField("position", "位置", choices, "", wtforms.Required{}),
wtforms.NewTextField("name", "名称", "", wtforms.Required{}),
wtforms.NewTextField("index", "序号", "", wtforms.Required{}),
wtforms.NewTextArea("code", "代码", "", wtforms.Required{}),
)
if handler.Request.Method == "POST" {
if !form.Validate(handler.Request) {
handler.renderTemplate("ad/form.html", ADMIN, map[string]interface{}{
"form": form,
"isNew": true,
})
return
}
c := handler.DB.C(ADS)
index, err := strconv.Atoi(form.Value("index"))
if err != nil {
form.AddError("index", "请输入正确的数字")
handler.renderTemplate("ad/form.html", ADMIN, map[string]interface{}{
"form": form,
"isNew": true,
})
return
}
err = c.Insert(&AD{
Id_: bson.NewObjectId(),
Position: form.Value("position"),
Name: form.Value("name"),
Code: form.Value("code"),
Index: index,
})
if err != nil {
panic(err)
}
http.Redirect(handler.ResponseWriter, handler.Request, "/admin/ads", http.StatusFound)
return
}
handler.renderTemplate("ad/form.html", ADMIN, map[string]interface{}{
"form": form,
"isNew": true,
})
}
// URL: /admin/ad/{id}/delete
// 删除广告
func adminDeleteAdHandler(handler *Handler) {
id := mux.Vars(handler.Request)["id"]
c := handler.DB.C(ADS)
c.RemoveId(bson.ObjectIdHex(id))
handler.ResponseWriter.Write([]byte("true"))
}
// URL: /admin/ad/{id}/edit
// 编辑广告
func adminEditAdHandler(handler *Handler) {
id := mux.Vars(handler.Request)["id"]
c := handler.DB.C(ADS)
var ad AD
c.Find(bson.M{"_id": bson.ObjectIdHex(id)}).One(&ad)
choices := []wtforms.Choice{
wtforms.Choice{"top0", "最顶部"},
wtforms.Choice{"top", "顶部"},
wtforms.Choice{"frontpage", "首页"},
wtforms.Choice{"content", "主题内"},
wtforms.Choice{"3cols", "3列宽度"},
wtforms.Choice{"4cols", "4列宽度"},
}
form := wtforms.NewForm(
wtforms.NewSelectField("position", "位置", choices, ad.Position, wtforms.Required{}),
wtforms.NewTextField("name", "名称", ad.Name, wtforms.Required{}),
wtforms.NewTextField("index", "序号", strconv.Itoa(ad.Index), wtforms.Required{}),
wtforms.NewTextArea("code", "代码", ad.Code, wtforms.Required{}),
)
if handler.Request.Method == "POST" {
if !form.Validate(handler.Request) {
handler.renderTemplate("ad/form.html", ADMIN, map[string]interface{}{
"form": form,
"isNew": false,
})
return
}
index, err := strconv.Atoi(form.Value("index"))
if err != nil {
form.AddError("index", "请输入正确的数字")
handler.renderTemplate("ad/form.html", ADMIN, map[string]interface{}{
"form": form,
"isNew": false,
})
return
}
err = c.Update(bson.M{"_id": ad.Id_}, bson.M{"$set": bson.M{
"position": form.Value("position"),
"name": form.Value("name"),
"code": form.Value("code"),
"index": index,
}})
if err != nil {
panic(err)
}
http.Redirect(handler.ResponseWriter, handler.Request, "/admin/ads", http.StatusFound)
return
}
handler.renderTemplate("ad/form.html", ADMIN, map[string]interface{}{
"form": form,
"isNew": false,
})
}