How to simply replace this code form the “Rarity Ranking App example” which is in Moralis v1 to a MongoDB query using their free tier.
Code excerpt:
const dbNFTs = Moralis.Object.extend(col);
const query = new Moralis.Query(dbNFTs);
Here the link to the example github: https://github.com/IAmJaysWay/Rarity-Ranking-NFT
Thanks for any support in advance !
Hello, can you give more context about what you mean with migrating to MongoDB?
where from you want to make the queries? (front end, backend, what stack/programming language)
The “Rarity Ranking App example” is using Moralis v1 and is a frontend app (see github link).
This example is a fork of Ethereum Boilerplate and demonstrates how you can build your own NFT Rarity Ranker.
But the app is basically only using the discontinued backend database of Moralis v1.
Now I want to replace the SKD calls like the two listed in the post with calls to MongoDB (the free cloud tier), so I can keep the code as untouched as possible (even without Moralis v1).
Hope this helps to clarify a bit 
If you are planning to do mongo db queries in front end you will need a backend component to handle the connection to mongo db as you probably don’t want to hardcode mongo db credentials in front end.
Other than that you should’ve able to use a library/sdk specific to mongo db for making the queries.
Ok. Thanks for the feedback !