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mike-thompson-day8 2015-04-27 07:38:48 +10:00
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src/re_frame/middleware.cljs
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@ -190,10 +190,11 @@
(on-changes my-f [:c] [:a] [:b])
Put the middlware above on the right handlers (ones which might change :a or :b.
Put the middlware above on the right handlers (ones which might change :a or :b).
It will:
- run 'f' each time the value at path [:a] or [:b] changes
- put the return value from f into the path [:c]
- call 'f' each time the value at path [:a] or [:b] changes
- call 'f' with the values extracted from [:a] [:b]
- assoc the return value from 'f' into the path [:c]
"
[f out-path & in-paths]
(fn on-changed-middleware