具有动态键值的Reactjs @setState

Question

I have a dynamic object in props, which I want to send in state

@setState
  key: val
  values:
    another_key: value
    @props.data.option: @props.data.value

But this way does not work, I found this solution:

  newState = {}
  newState[@props.data.option] = @props.data.value
  this.setState(newState);

But this way sets the value of the right in state

Answer 1

The issue here is that you are dealing with nested objects in state, and the entire object values is replaced when it seems you only want to update a subset of the keys in the values object. The best way to do this is to use React's immutability helpers via the set operation. ( https://facebook.github.io/react/docs/update.html ).

using es6, you can set a dynamic key:

var update = require('react-addons-update');

var newState = update(this.state, {
  values:  {[dynamic_key]: {$set: dynamic_value}}
});

this.setState(newState);