How to fetch data when a React component prop changes?

Question

My TranslationDetail component is passed an id upon opening, and based on this an external api call is triggered in the class constructor, receiving data to the state, and t

Answer 1

From React 16.3 and onwards componentWillMount, componentWillUpdate and componentWillReceiveProps are deprecated.

You can use static getDerivedStateFromProps and return a new state based on changes on props.

You don't have access to your this objects like props, so you cannot compare nextProps with your current props by nextProps.sth !== this.props.sth. You can compare you prevState value with nextProps and return new value of state.

Make sue you add UNSAFE_ to your current componentWillMount and the other deprecated lifecyle methods for now.