om-next-ident.cljs

(def app-state (atom {:user/role :admin
                      :links/by-id {"1" {:_id "1" :url "" :title "" :favicon "" :likes 0}}
                      :links/all [[:links/by-id "1"]}))

(defui Link
  static om/Ident
  (ident [this {:keys [_id]}]
    [:links/by-id _id])
  static om/IQuery
  (query [this]
    [:_id :title :url :favicon :likes])
  Object
  (render [this]
    ;; NOTE: In addition to link's properties, this component needs user/role
    (let [{:keys [_id title url favicon likes user/role] :as props} (om/props this)]
       ...)))

(defui Main
  static om/IQuery
  (query [this]
    (let [subquery (om/get-query Link)]
      `[:user/role {:links/all ~subquery}]))
  Object
  (render [this]
    (let [{:keys [links/all user/role]} (om/props this)]
      ;; I can access user/role here but how to pass it to Link components?
      (html
        [:ul (for [x all]
          (link x))]))))