如何为嵌套对象设置setState？ [英] How do I setState for nested object?

问题描述

对于我正在使用的插件，我必须有一个如下所示的状态：

For a plugin I'm using I have to have a state that looks like this:

getInitialState() {
  return {
    invalid: true,
    access: {
      access_code: '',
      zipcode: '',
      password: '',
      confirm: '',
      hospital_id: '',
    },
  }
},

如何在不设置剩余访问权限的情况下设置hospital_id的状态？

How would I set the state of hospital_id without setting the rest of access?

这似乎除了hospital_id之外的一切：

This seems to remove everything but hospital_id:

this.setState({access: {hospital_id: 1}})

推荐答案

您可以使用Object.assign或对象传播提议来创建具有更新属性的对象的副本。

You can use Object.assign or the object spread proposal to create copies of objects with updated properties.

this.setState({
  access: {
    ...this.state.access,
    hospital_id: 1,
  },
});

this.setState({
  access: Object.assign({}, this.state.access, {
    hospital_id: 1,
  }),
});

或者最短版本和原子更新：

Or for the shortest version and atomic update:

this.setState(({access}) => ({access: {
  ...access,
  hospital_id: 1,
}});

还有一个选项是更新插件：

And one more option is the updates addon:

var update = require('react-addons-update');
this.setState({
  access: update(this.state.access, {
    hospital_id: {$set: 1},
  })
});

我会使用第一个。

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