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React Hook useEffect async fetch data not passing to tooltip material ui component

I want passing data after fetching that with use effect into my component, after a while i found the problem

Here some of my code

userData Types (UPDATED)

export interface IUser {

display_name:  string;
  id:            string;
  images:        Image[];
}

export interface Image {
  url:    string;
}

UseState (UPDATED)

const [userData, setUser] = React.useState<IUser[]>([{
display_name: '',
id: '',
images: [{
  url: ''
}]

}]);

const token = useSelector((state: RootStateOrAny) => state.token.value);

GetCurrentUser function

const getCurrentUser = async (token: string) => {
try {
  const response = await axios.get("https://api.spotify.com/v1/me", {
    headers: {
      Authorization: `Bearer ${token}`
    }

  })
  return response.data
}
catch (e) {

  console.error(e)
}


}

useEffect function

i use async

React.useEffect(() => {
const get = async()=>{
  const data = await getCurrentUser(token);
  setUser(data)
}
get();

},[])

My main component

im using app bar component template from material ui and the problem come from tooltip child component that show avatar

here my code

...
<Box sx={{ flexGrow: 1, justifyContent: 'end' }}>
        {console.log(userData)} //this line working and can pass the data
        <Tooltip title={userData.images[0].url}> // this line didnt working so if i pass to another child like avatar it cant work too, but if i delete the data code it will work properly
          <IconButton onClick={handleOpenUserMenu} sx={{ p: 0 }}>
            {/* {console.log(userData.images[0].url)} */}
            <Avatar alt="Remy Sharp" src='{}' />
          </IconButton>
        </Tooltip>
...
</Box>
...

The Error

i think the problem come from rendering react, because in the outside of tooltips component it can work but when enter the tooltip component it will render tooltips component first before the useEffect so the data is unavailable

Im stuck for my final project to show profile data in app bar because i cant resolve this problem :V so can anyone help me for this ?? big thanks!

about 4 years ago · Santiago Trujillo

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Answer 1 · 2022-06-30T13:51:47.389Z

From what I can tell, you've declared userData to be an array.

export interface IUser {
  display_name: string;
  id: string;
  images: Image[];
}

export interface Image {
  url: string;
}

...

const [userData, setUser] = React.useState<IUser[]>([{
  display_name: '',
  id: '',
  images: [{ url: '' }],
}]);

In the render return the code is accessing the userData state as though it was an object. console.log(userData) is ok since it's just the entire state value, but userData.images is undefined. Accessing userData.images alone is ok though, it's when the code then attempts to access the 0th index of this undefined value that the error is thrown.

I suspect you meant to access userData[0].images first, then userData[0].images[0].

code

console.log(userData);

...
<Box sx={{ flexGrow: 1, justifyContent: 'end' }}>
  <Tooltip title={userData[0].images[0].url}>
    <IconButton onClick={handleOpenUserMenu} sx={{ p: 0 }}>
      <Avatar alt="Remy Sharp" src='{}' />
    </IconButton>
  </Tooltip>
  ...
</Box>
...

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