I went digging and the code where I set local state to cursor data was actually old code and I was missremembering it :-) All of my new code does actually strictly separate the two mechanisms so that app state refers to the domain data (the what) and local state refers to the state of widgets (the how). So there actually isn't any natural overlap.
As for Alans question, I've reread it a few times and I'm not sure I understand what you're trying to achieve. make-animations should be able to work with (:circles cursor) without knowing or caring if it gets given a cursor or not - cursors are quite transparent. Are you trying to detect if the cursor has changed from one update to the next? If yes then you can compare your current cursor to the previous one in will-receive-props by doing (when-not (= (om.core/get-props owner) next-props) (cursor-has-changed)) or in did-update using (when-not (= next-props data) (cursor-has-changed)) where data is your cursor. Use the former if you want to do this before render and the latter if after. Note that if you modify local state in did-update you will trigger a rerender potentially causing a render loop (but if you only do this when your cursor data has changed, it's not a problem because the second time the conditional will be false). Hope that helps. Alan, if you haven't read this page, it's very helpful: https://github.com/swannodette/om/wiki/Cursors Jamie On Sep 3, 2014, at 3:21 PM, Alan Shaw <[email protected]> wrote: Ahhhhhh thanks! 2014/9/3 上午11:48 於 "David Nolen" <[email protected]> 寫道： > It is not. Use om.core/value > > On Wed, Sep 3, 2014 at 2:29 PM, Alan Shaw <[email protected]> wrote: > > So it is OK to take (.-value cursor) in render-state? > > > > -- > > Note that posts from new members are moderated - please be patient with > your > > first post. > > --- > > You received this message because you are subscribed to the Google Groups > > "ClojureScript" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to [email protected]. > > To post to this group, send email to [email protected]. > > Visit this group at http://groups.google.com/group/clojurescript. > > -- > Note that posts from new members are moderated - please be patient with > your first post. > --- > You received this message because you are subscribed to the Google Groups > "ClojureScript" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/clojurescript. > -- Note that posts from new members are moderated - please be patient with your first post. --- You received this message because you are subscribed to the Google Groups "ClojureScript" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/clojurescript. -- Note that posts from new members are moderated - please be patient with your first post. --- You received this message because you are subscribed to the Google Groups "ClojureScript" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/clojurescript. -- Note that posts from new members are moderated - please be patient with your first post. --- You received this message because you are subscribed to the Google Groups "ClojureScript" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/clojurescript.
