英文:
Passing dynamic initial value to riverpod provider
问题
我有一个如下的用例：一个带有初始筛选对象的屏幕，这个屏幕多次使用不同的筛选配置，我需要实现的是从这个屏幕传递一个不同的初始筛选对象给 riverpod 通知提供程序，然后我可以使用提供程序更改此筛选的状态，我该如何做？
我尝试将筛选对象传递给 build 方法，但这并没有起作用。
英文:
I have a usecase as follow: a screen with initial filter object, this screen is used multiple times with different filter configuration, what I need to achieve is to pass an initial different filter object for each instance from this screen to riverpod notifier provider then I can change the state of this filter using the provider, how I can do that?
I have tried to pass a filter object to the build method but this didn't work.
答案1
得分: 1
你需要决定是每次只想要一个过滤器提供者，还是想要许多拥有自己过滤器的提供者。如果是后者，请将关于过滤器的信息作为一个家庭键传递进去。如果是前者，那么提供者的构建方法可以消耗（ref.watch）另一个持有过滤器的提供者。该过滤器持有者可以通过其通知器上的变异方法进行更新。
英文:
You need to decide whether you want only one filter for that provider at a time, or whether you want many providers with their own filters. If the latter, pass something about the filter in as a family key. If the first, then have the build method of the provider consume (ref.watch) another provider that holds the filter. That filter-holder can then be updated via mutate methods on its notifier.
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