Flutter Provider: what is the best way to dispatch the action properly?

Asked Jun 23 '20 at 16:52

Active Jun 23 '20 at 16:58

Viewed 856 times

The question is related to my previous question: Why can't I use context.read in build(), but I can use Provider.of with listen: false? You said that an old Provider.of<X>(context, listen: false) syntax is unsafe. However, it works.

I believe fetchTransactions() method won't change, so there's no need to watch it.

I can't use context.read because it's not in the closure and will throw the "don't use context.read in a build method" error.

I can't use context.watch or context.select with FutureBuilder, because it will cause an infinite rebuild loop.

edited Jun 23 '20 at 16:58

asked Jun 23 '20 at 16:52

See https://stackoverflow.com/questions/52249578/how-to-deal-with-unwanted-widget-build. You have a bug but you're not aware of it – Rémi Rousselet Jun 23 '20 at 17:33
@RémiRousselet so, is the correct way to do `context.read().fetchTransactions()` in the InitState() and to save it to the state variable, and to use this variable inside of FutureBuilder? – Sergey Molchanovsky Jun 23 '20 at 20:21
Yes that is correct – Rémi Rousselet Jun 23 '20 at 22:10
@RémiRousselet how can I force FutureBuilder to refresh? It used to be updated with new server data on each widget rebuild, but now it makes API call in InitState() once and never refetch anymore. – Sergey Molchanovsky Jul 20 '20 at 11:04
Change the Future passed to FutureBuilder with a setState or something similar – Rémi Rousselet Jul 20 '20 at 16:31

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