Along with componentDidMount, You also need to implement the componentWillReceiveProps or use getDerivedStateFromProps(from v16.3.0 onwards) in Products page since the same component is re-rendered with updated params and not re-mounted when you change the route params, this is because params are passed as props to the component and on props change, React components re-render and not re-mounted.
EDIT: from v16.3.0 use getDerivedStateFromProps to set/update state based on props(no need to specify it in two different lifecyle methods)
static getDerivedStateFromProps(nextProps, prevState) {
if (nextProps.match.params.product !== prevState.currentProductId){
const currentProductId = nextProps.match.params.product
const result = productlist.products.filter(obj => {
return obj.id === currentProductId;
})
return {
product: result[0],
currentId: currentProductId,
result
}
}
return null;
}
Prior v16.3.0, you would use componentWillReceiveProps
componentWillReceiveProps(nextProps) {
if (nextProps.match.params.product !== this.props.match.params.product) {
const currentProductId = nextProps.match.params.product
const result = productlist.products.filter(obj => {
return obj.id === currentProductId;
})
this.setState({
product: result[0],
currentId: currentProductId,
result
})
}
}