Handle relational data using useMany with the foreign key field
How can I handle relational data using useMany with the foreign key field like 'product_id'?
4 Replies
Hi @Thanh Ho. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:
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You can handle relational data using the
useMany
hook in Refine. This hook is used to fetch multiple records from the API. It uses the getMany
method from the dataProvider
as the query function. If your data provider does not have a getMany
method, useMany
will use the getOne
method instead, but this is not recommended as it will make requests one by one for each id. It's better to implement the getMany
method in the data provider.
Here is an example of how you can use the useMany
hook to fetch relational data using a foreign key field like 'product_id':
In this example, useMany
is used to fetch the products and categories of a product category. The ids
property is an array of product ids or category ids that you want to fetch. The queryOptions
property is used to enable or disable the query based on whether there are any product categories.
For more information, you can refer to the Refine documentation on useMany (https://refine.dev/docs/data/hooks/use-many/).
Please note that the actual implementation may vary based on your specific requirements and the structure of your data.
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evident-indigo•6mo ago
@kapa.ai I have 2 tables: products and product_images, each product can have zero to many images with the foreign key product_id. I use useList to get products, and useMany to get related images for the product results. In this case, useMany needs to query product_images with product_id, not id. How can I do that?
evident-indigo•6mo ago
This code is helpful. Thanks.
https://refine.dev/docs/data/packages/supabase/#idcolumnname---using-custom-primary-key
Supabase | Refine
Introduction