[英]Update property value in nested array (redux state)
How do you update a certain nested property in redux state? 如何在Redux状态下更新某个嵌套属性?
Let's say I only want to update the "value" property in the object below. 假设我只想更新下面对象中的“ value”属性。 I know you shouldn't deep copy the previous state but how do i only change the property of an object in an array in an object of an array?
我知道您不应该深深复制以前的状态,但是如何仅更改数组对象中数组对象的属性?
Thanks in advance! 提前致谢!
market { shops: [ { name: 'abc', items: [ { name: 'item1', value: 40, id: '234rfds32' }, {} ] }, {}, {} ] }
Something like the following: 类似于以下内容:
state = { ...state, shops: [ ...state.shops, shops[index].items = [ ...shops[index].items, ] ] };
Something like this would work. 这样的事情会起作用。 (code looks ugly, didn't test though)
(代码看起来很丑,虽然没有测试)
var shop = state.shops[index];
var items = [...shop.items];
items[<index>].value = 'your value';
shop.items = items;
var shops = [...state.shops];
shops[index] = shop;
state = {
...state,
shops
};
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