Debug change detector

Asked May 16 '17 at 04:35

Active May 16 '17 at 04:37

Viewed 388 times

I ran into this very known Angular issue, where my view is not updating when the data model changes.

My problem is that previously it actually worked, but I can't figure out what change in my code caused it to stop working.

I know there are a some good answers for fixing these kind of issues. But they all seem to me like work arounds, that just make it work without a deep understanding of the problem cause.

My questions then are:

Is there any way to debug this kind of issue properly?

Can anyone explain how the Change Detector works and give clear rules for when the change detection should and shouldn't work?

edited May 23 '17 at 12:34

Community

asked May 16 '17 at 04:35

naomi

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Can you provide more information about error problem? – yurzui May 16 '17 at 04:38
The point of the question is generally how to debug these kind of issues, not solve my specific problem... – naomi May 16 '17 at 04:42
Open browser put breakpoint and debug it – yurzui May 16 '17 at 04:42
Which version angular are you using? – yurzui May 16 '17 at 04:43
Yes I know, I debug, I see my data change, but the view is not updating. What next? – naomi May 16 '17 at 04:43
First you need to check current zone by writing `console.log(Zone.current.name)` – yurzui May 16 '17 at 04:44

Debug change detector

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