Convert Nodejs API to MongoDB - node.js

I have created a NodeJS project where I have saved the data in a file data.js. It is saved in a server in a local host and I can use it as an API call.
Now I would like to convert this project using MongoDB as the backend to make it more dynamic. I have fetched data using React Hooks in the HomeScreen Page.
Do I need to change the React Hook and Fetching data(axios) Code??

You do not need to change your React code if you ensure your Nodejs API still provides same data in same format as before. Just need to update backend nodejs code to store and fetch details from mongodb instead of the data.js file.

Just Use MongoDB Queries to fetch details and send it in the response like as you were sending before from data.js. The difference would be now is you will be storing your data in MongoDB collections and read it from collections according to your requirements.

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But I am having issue using the already made DB connection inside components (for example using insert function) because Node.js code can be used only in /pages directory and it doesn't work in /components directory.
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I am working on an app where firestore is used as a database, so I have to fetch inserted data on an insert query using hooks in reactjs.
How can this be done?
Take a look on useEffect() hook. This hook is used for making asynchronous calls. So, you have to put the fetch inside this hook.

Resources