try changing your table component to this ->
(defn table [app owner]
(reify
om/IRender
(f [data owner]
(let [cols (select-keys app [:cols])]
(dom/table nil
(dom/thead nil
(om/build (row-builder {} {}) app {:fn
extract-header-row}))
(apply dom/tbody nil
(for [index (range (count (:data app)))]
(om/build (row-builder {}) app {:fn (partial
extract-row index)}))))))))
On Friday, July 18, 2014 9:54:16 PM UTC-7, Justin Reed wrote:
> I'm having a problem with Om getting shared to propagate to child components.
> The shared map gets passed to the root, but children of the root get nil on a
> call to om/get-shared. I've tried a number of things, but have concluded it
> must be the way I'm calling build on the children.
>
> Seems like a long shot given the google results I (haven't) found, but I'm
> curious if anyone else has had this problem.
>
> Here's the code (it's my experiments with building up a table):
>
> (defn- cell-builder [cell-props]
> (fn [data owner]
> (let [c (om/get-shared owner :click)]
> (reify
> om/IRender
> (render [_] (dom/td (clj->js {:onClick #(put! c {:topic :click :text
> (str data)})}) (str data)))))))
>
> (defn- row-builder
> ([row-props] (row-builder row-props {}))
> ([row-props cell-props]
> (fn [row-data owner]
> (reify
> om/IRender
> (render [_]
> (let [cols (:cols row-data)
> data (map #(get (:data row-data) %) cols)]
> (apply dom/tr (clj->js row-props)
> (map #(om/build (cell-builder cell-props) %) data))))))))
>
> (defn- extract-row [index cursor]
> {:cols (mapv :key (:cols cursor))
> :data (get-in cursor [:data index])})
>
> (defn- extract-header-row [cursor]
> (let [cols (:cols cursor)
> col-keys (mapv :key cols)
> display-names (mapv :display-name cols)]
> {:cols col-keys
> :data (zipmap col-keys display-names)}))
>
> (defn table [app owner]
> (let [cols (select-keys app [:cols])]
> (dom/table nil
> (dom/thead nil
> (om/build (row-builder {} {}) app {:fn extract-header-row}))
> (apply dom/tbody nil
> (for [index (range (count (:data app)))]
> (om/build (row-builder {}) app {:fn (partial extract-row
> index)}))))))
>
> Here's the root call from another namespace (some vars not listed here):
>
> (om/root
> tbl/table
> state
> {:target (. js/document (getElementById "table"))
> :shared {:click click-pub-chan}})
>
> The call to table has the shared state. The calls to both row-builder and
> cell-builder don't.
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