useMany and REST API
Hello,
I would like to add the logic to my backend to make the useMany hook work.
Here is my Controller:
And here is my Mongo service:
Here is the useMany hook that needs to be working:
What is wrong with the code?
5 Replies
Hi @Steve.l. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:
----------------------
To make the
useMany
hook work with your backend, you need to ensure that your backend is correctly handling the request and returning the expected data format. Based on the provided code, it looks like your backend logic is mostly correct, but there are a few things to check and adjust.
Backend Controller
Your getMany
controller looks fine, but ensure that the ids
are being correctly parsed and passed to the crud
service. Here is your controller for reference:
Mongo Service
Your Mongo service's getMany
method is also correctly implemented. It converts the string IDs to ObjectId
and queries the MongoDB collection. Here is the relevant part of your Mongo service:
Frontend useMany
Hook
Your useMany
hook usage seems correct. Here is the relevant part of your frontend code:
Potential Issues and Fixes
1. Ensure Correct Query Parameter Parsing: Make sure that the ids
query parameter is being correctly parsed as an array. If the ids
are being sent as a comma-separated string, you might need to split them.
2. Check Data Format: Ensure that the data returned from your backend matches the expected format by useMany
. The useMany
hook expects the data to be in the format { data: [...] }
.
3. Verify ObjectId Conversion: Ensure that the ObjectId
conversion is correct and that the IDs being passed are valid MongoDB ObjectIds.
Example Adjustments
Here is an example of how you might adjust your controller to ensure the ids
are correctly parsed:
Conclusion
Ensure that your backend correctly parses the ids
query parameter and returns the data in the expected format. Your frontend useMany
hook usage seems correct, so the main focus should be on verifying the backend logic.
For more information on the useMany
hook, you can refer to the official documentation (https://refine.dev/docs/data/hooks/use-many/#usage).
----------------------
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
----------------------<@195478867811500033> kapa.ai is still learning and improving, please let us know how it did by reacting below
sensitive-blue•2w ago
can you create me a backend router @kapa.ai ?
Let me check the knowledge base for you. One moment! :books:
----------------------
Sure! Below is an example of how you can create a backend router to handle the
getMany
request for your leagues
resource. This example assumes you are using Express.js for your backend.
Backend Router
First, ensure you have Express.js installed in your project. If not, you can install it using:
Then, create a router file, for example, leaguesRouter.js
:
Controller
Here is your leaguesController.js
with the getMany
function:
Mongo Service
Ensure your Mongo service is correctly set up. Here is the relevant part of your mongoService.js
:
Main Server File
Finally, make sure to use the router in your main server file, for example, server.js
:
Summary
This setup includes:
- A router file (leaguesRouter.js
) to handle the /api/leagues/many
endpoint.
- A controller file (leaguesController.js
) with the getMany
function.
- A Mongo service file (mongoService.js
) to interact with your MongoDB database.
- A main server file (server.js
) to set up and run your Express.js server.
Make sure to adjust the paths as necessary based on your project structure. This should provide a complete backend setup to handle the useMany
hook in your frontend.
----------------------
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
----------------------<@195478867811500033> kapa.ai is still learning and improving, please let us know how it did by reacting below