BeforeSave save pointer

Moralis General
#1

If the user does not have a collection while saving to the nft table, I want to create an automatic collection beforesave and save it to the nft table, but it saves undefined. Where am I going wrong, can you help?

// cloud code

Moralis.Cloud.beforeSave("Nfts", async function(request) {
    const userCollection = request.object.get("collections");
    if (userCollection) {
      logger.info("success");
    } else {
        logger.info("fail");
        const UserCollection = Moralis.Object.extend("UserCollections");
        const collection = new UserCollection();
        collection.set("userId", request.object.get("userId"));
        collection.set("title", "UntitledCollection");
        collection.set("description", "My first collection");
        collection.save(null, { useMasterKey: true }).then((usercollection) => {
           request.object.set("collections",usercollection);
    });
}
  });

// react

const Nfts = Moralis.Object.extend("Nfts");
const nft = new Nfts();
nft.set("category", category);     
nft.set("properties", propertyData);
nft.set("collections", collection); // collection is "" in frontend. i want to set on cloud before save
.......
nft.save().then((nft) => {
	toast.success('Created successfully!',options);
	}, (error) => {
		toast.error('Unsuccessful!',options);
		 alert('Failed to create new object, with error code: ' + error.message);
});

it returns; schema mismatch for Nfts.collections; expected Pointer but got String

#2

Try adding a logger.info of the collection which, so you can verify if you are able to read it through the request.object.get.

1 Like
#3

What are you trying to do here?

You got access to request.user: The Moralis.User that is making the request. This will not be set if there was no logged-in user, and also request.params: The parameters object is sent to the function by the client.
You can try log JSON.stringify(request) to see if you got object property on the returned object.

#4

If the user does not have a collection while creating nft, I want to create an automatic collection just before saving and save this collection as a pointer to the collection field in the nft table.

#5

I can see returned object in logs but saving already done before ‘request.object.set’

#6

Try to use await here, instead of .then, as beforeSave function could finish before that then is executed.

#7

Thank you @cryptokid, it worked the way you said.

1 Like