I need help with managing react states, I can’t seem to wrap my head around it.
I have a component that receives the id of a database entry from another page via useLocation, I then use that id with an axios get request to pull the rest of the data into an array. However, when I am trying to use the data from the get request as a defaultValue for an MUI TextField it doesn’t render the data naturally, the states returns as undefined after the page loads. I have to set the TextField’s key to the get request data (a work around I found in the web) to render. Then when I try to submit the form, the value from the Textfield displays as undefined though the Texfield contains the data from the get request.
const location = useLocation();
const [info, setInfo] = useState([]);
useEffect(()=>{
axios
.get("//localhost:3001/Info/" + location.state.id)
.then((response)=>{
setInfo(response.data);
})
});
const validationSchema = Yup.object().shape({});
const formik = useFormik({
initialValues: {
name: info.name
},
validationSchema: validationSchema,
onSubmit: (values) => {
console.log(values) // displays {name: undefined, .....}
}
});
return(
<>
<Container>
<form onSubmit = {formik.handeSubmit}>
<TextField
id = "name"
label = "Name"
name = "name"
onChange = {formik.handleChange}
onBlur = {formik.handleBlur}
key = {info.name} //Textfield blank without setting key
defaultValue = {info.name}
/>
<Button type = "Submit"> Submit </Button>
</form>
</Container>
</>
);
I am expecting the TextFields default values to render correctly without declaring a key as a work around. Also, I expect the values of the textfields to contain the initialvalues from the formik declaration on submit.