How do you get data from firestore using reactjs hooks?
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.
Related
The architecture of our app uses NodeJS and Django together.
I need to post a JSON data from NodeJS to Django without receiving any request before that from Django. Because, there is a function in NodeJS that generates and returns JSON data such that whenever this data returned, NodeJS must post it to Django.
I don't know any thing about that and have not any idea for that.
What should I do? What APIs/modules do I need to use and how should I work with NodeJS and Django to fulfill it?
api can be created in django with necessary permissions & authentication, then can continue with function call in nodejs (any medium to trigger code to submit data in django api).
I have a NodeJS server and mongoDB where I have get and post API for the data. And I was wondering if I want to change something for example in my Users collection and have the changes directly send to my frontend react project. I was reading about socket-io, and can't find how to send the data as I am sending it in the API.
Is there any resources or examples on this ?
I have a backend application built with node.js. Every time there is a change in the database I want to reflect it in my ReactJs interface. (Like listing products or updating posts). I use mongodb as database and mongoose as ORM. How can I do that?
You need to use something that's call WebHook. Webhook Article
How does fetching records from mongoose find() and updating records with updateOne work exactly.
I am unable to find it on social media..
When a GET request arrived to route handler. Will data fetch from db and maps to schema or will it get records directly from db?
Please explain the proper workflow. What happen when request arrives and how the mapping from db to schema works in CRUD?
Making the assumption that you are also using a framework like expressjs, a GET request does not go directly to mongodb
within a framework like express, you write a handler to handle GET/POST/PATCH/DELETE/PUT etc. within each of those routes you would write your code to interact with mongoose (mongodb)
for reference here is a
basic entry level NODEJS app
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.