I need to setState with an object that I'm getting from a redux store. The problem is when I call setState in my component I am getting undefined. Any idea on how to set a default value of state with fetched data?
Here is my component:
import React, { useEffect, Fragment, useState } from 'react';
import { useSelector, useDispatch } from 'react-redux';
const contactDetails = useSelector((state) => state.contactDetails)
const upFields = contactDetails?.contact?.data?.fields
const [contact, setContact] = useState({
fields: upFields <---- this is returning undefined.. The name is correct, but maybe setState is running too fast?
})
console.log(contact) <---- this shows {fields: undefined}
console.log(upFields) <---- this console.logs just fine
you use useEffect() and trigger it using the object
useEffect(()=>{
setContact(fetched_data)
}, [fetched_data]) // <-- data array will trigger every time this data change
you can trigger it on first component mount with
useEffect(()=>{
setContact(fetched_data)
}, []) // <-- empty array will only trigger once
So, I ended up setting my state one component higher, and passing the "upFields" to the child component that needed this state. Once in the child component I just ran a useEffect and setState with the data I needed