func UpdateTopic(rw http.ResponseWriter, req *http.Request, params martini.Params, enc encoding.Encoder, dtx *apicontext.DataContext) string {
var err error
var topic forum.Topic
if topic.ID, err = strconv.Atoi(params["id"]); err != nil {
apierror.GenerateError("Trouble getting forum topic ID", err, rw, req)
}
if err = topic.Get(dtx); err != nil {
apierror.GenerateError("Trouble getting forum topic", err, rw, req)
}
if req.FormValue("groupID") != "" {
if topic.GroupID, err = strconv.Atoi(req.FormValue("groupID")); err != nil {
apierror.GenerateError("Trouble updating forum topic -- invalid forum group ID", err, rw, req)
}
}
if req.FormValue("closed") != "" {
if topic.Closed, err = strconv.ParseBool(req.FormValue("closed")); err != nil {
apierror.GenerateError("Trouble updating forum topic -- boolean closed parameter is invalid", err, rw, req)
}
}
if req.FormValue("active") != "" {
if topic.Active, err = strconv.ParseBool(req.FormValue("active")); err != nil {
apierror.GenerateError("Trouble updating forum topic -- boolean active parameter is invalid", err, rw, req)
}
}
if req.FormValue("name") != "" {
topic.Name = req.FormValue("name")
}
if req.FormValue("description") != "" {
topic.Description = req.FormValue("description")
}
if req.FormValue("image") != "" {
topic.Image = req.FormValue("image")
}
if err = topic.Update(); err != nil {
apierror.GenerateError("Trouble updating forum topic", err, rw, req)
}
return encoding.Must(enc.Encode(topic))
}
