func (c *appContext) articleHandler(w http.ResponseWriter, r *http.Request) {
params := context.Get(r, "params").(httprouter.Params)
repo := articlesModel.ArticleRepo{c.db.C("articles")}
article, err := repo.Find(params.ByName("id"))
if err != nil {
log.Fatal(err)
}
w.Header().Set("Content-Type", "application/vnd.api+json")
json.NewEncoder(w).Encode(article)
}
