func (c *appContext) deletearticleHandler(w http.ResponseWriter, r *http.Request) {
params := context.Get(r, "params").(httprouter.Params)
repo := articlesModel.ArticleRepo{c.db.C("articles")}
err := repo.Delete(params.ByName("id"))
if err != nil {
log.Fatal(err)
}
w.WriteHeader(204)
w.Write([]byte("\n"))
}
