从built_value中更新BuiltList

Question

如果满足某些条件，我想更新状态中的BuiltList。这是我的减速器

TravelDeductionsStateBuilder _travelDeductionBreakfastToggled(
TravelDeductionsStateBuilder state,
TravelDeductionBreakfastToggledAction action) =>
state
..days = state.days.build().rebuild((d) {
if (d[action.key].deductions.contains(TravelDeductionType.BREAKFAST)) {
d[action.key]
.deductions
.rebuild((p0) => p0.remove(TravelDeductionType.BREAKFAST));
} else {
d[action.key]
.deductions
.rebuild((p0) => p0.add(TravelDeductionType.BREAKFAST));
}
}).toBuilder();

我需要在deductions中添加/删除ENUM条目，但似乎忽略了此更新，我无法相应地更新此列表。有什么提示吗?

Answer 1

如果有人想知道这是解决方案

TravelDeductionsStateBuilder _travelDeductionBreakfastToggled(
TravelDeductionsStateBuilder state,
TravelDeductionBreakfastToggledAction action) =>
state
..days = state.days.build().rebuild((d) {
if (d[action.index]
.deductions
.contains(TravelDeductionType.BREAKFAST)) {
d[action.index] = d[action.index].rebuild(
(b) => b.deductions.remove(TravelDeductionType.BREAKFAST));
} else {
d[action.index] = d[action.index]
.rebuild((b) => b.deductions.add(TravelDeductionType.BREAKFAST));
}
}).toBuilder();

你可以在这里找到解释https://github.com/google/built_collection.dart/issues/259#issuecomment-1122390601