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cljfx 2020-03-29
Hi @vlaaad, I have a subscription that looks like this:
(defn sub-current-page
[context]
(println "fire!")
(let [db (fx/sub context :db)
eid (fx/sub context :eid)]
(d/entity db eid))):dbkey contains the latest value of a https://github.com/replikativ/datahike/ database, which I swap! to the latest db value every time a transaction occurs. (Based on your example of the datascript db). However, the subscription only fires when :eid changes, not when :db changes. Any ideas why this could be happening?
Also let me know if you’d rather get these questions as GH issues 🙂
vlaaad 2020-03-29T13:30:35.008600Z
Either way to ask is fine 🙂
vlaaad 2020-03-29T13:31:18.009400Z
Could it be that datahike returns true for (= old-db new-db) ?
vlaaad 2020-03-29T13:31:39.009900Z
At least I know it has these kinds of problems in it's entity API
vlaaad 2020-03-29T13:32:09.010500Z
which defines equality only based on id, but not db, which is very very wrong...
vlaaad 2020-03-29T13:33:32.011400Z
@jlmr ^
Thanks, will look at that. You’re probably right
Hm:
(defn transact
[conn tx-data]
(let [report (d/transact conn tx-data)]
(swap! *context fx/swap-context assoc-in [:db] (:db-after report))
(= (:db-before report) (:db-after report))))false for any transactionOk changing the subscription to this:
(defn sub-current-page
[context]
(let [db (fx/sub context :db)
eid (fx/sub context :eid)]
(d/pull db '[*] eid)))👍 1