我觉得我的减速器应该工作,但它一直坚持我在改变状态。更新减速器中的对象属性,无突变
Uncaught Error: A state mutation was detected inside a dispatch, in the path:
output.outputList.0.composition
. Take a look at the reducer(s) handling the action {"type":"SET_OUTPUT_COMPOSITION",
我几个小时前发布了类似的答案,但没有答案,但我认为我的redux状态太复杂了。这是我的简化版本,我仍然得到mutate错误..我做错了什么?我是否应该在我的redux状态下使用班级?我应该使用某种不可变的库吗?请帮帮我。
我最初的终极版国家
output: {
outputList: [], //composed of Output class objects
position: 0
}
输出类
class Output {
constructor(output) {
this.id = output.id;
this.composition = output.getComposition();
this.outputObj = output;
this.name = output.name;
this.url = output.getUrl();
}
}
export default Output;
减速更新财产
case types.SET_OUTPUT_COMPOSITION: {
let outputListCopy = Object.assign([], [...state.outputList]);
outputListCopy[state.position].composition = action.composition;
return Object.assign({}, state, {outputList: outputListCopy});
行动
export function setOutputComposition(comp) {
return { type: types.SET_OUTPUT_COMPOSITION, composition: comp}
}
你可以包括你的动作加入 –
@DavidBradshaw行动,你将ty – user1189352
我发现我需要这里的答案http://stackoverflow.com/questions/35362460/replace-array-item-with-another-one-without- mutating-state – user1189352