TypeError: Content.get is not a function

Moralis General
#1 
 useEffect( () => {
     
   
    const fetchData =  async () => {
      await Moralis.start({ serverUrl, appId, masterKey })
      const Content = Moralis.Object.extend("Tweets");
      setTweets(Content?.get('username'));
      setEthAddress(Content?.get('ethAddress'));
      setUserName(Content?.get('username'));
    //  Content.get("username");
     
    
    };
  

  fetchData();
}, [Moralis, tweets]);
#2

You can look into this https://docs.moralis.io/moralis-dapp/database/queries#basic-queries

#3

Since you wrraped your application with MoralisProvider, you don’t need Moralis.start anymore. Here’s a little fix

useEffect(() => {
  const fetchData = async () => {
    const Content = Moralis.Object.extend("Tweets");
    const query = new Moralis.Query(Content);
    const content = await query.find(); // Array of Tweets

    // setTweets(Content?.get("username"));
    // setEthAddress(Content?.get("ethAddress"));
    // setUserName(Content?.get("username"));
    //  Content.get("username");
  };

  isInitialized && fetchData();
}, [isInitialized, tweets]);

Because content will be an array, you should access the elements with index, that’s why other parts are commented out

#4

but it was telling me that i need moralis.start, so please how do i know get the username

#5

If you have isInitialized as your dependencies and you check If isInitialized before running the fiction, it ought not to

#6 
const [profileData, setProfileData]= useState<any|null>(null);


 useEffect(() => {
    const fetchData = async () => {
      const Content = Moralis.Object.extend("Tweets");
      const query = new Moralis.Query(Content);
      const content = await query.find(); // Array of Tweets
      setProfileData(content as any)
    };
  
    isInitialized && fetchData();
  }, [Moralis.Object, Moralis.Query, isInitialized]);
  


  if (isInitializing) {
    return <CircularProgress/>;
  }

{profileData?.get(‘username’)}

TypeError: profileData.get is not a function

type or paste code here
#7

you can use some debugging from time to time, it works with console.log(JSON.stringify(variable_name)) in react

2 Likes
#8

A little thing to note here, content is an array, so to use .get on any of it’s element, you need to access it through index such like profileData[0]?.get(‘username’) which should return that of the first element

1 Like
#9 
TypeError: Cannot read properties of null (reading '0')
#10

Try console.log profileData and profileData[0] to see if you got something