sensitive-blue•10mo ago

How does DataProvider manage field types?

I am working on a custom data provider, but for some reason, default template I got from refine playground, is showing custom fields as a dropdown and querying APIs for fetching values. I want to understand how its taking the data type for these fields.

4 Replies

kapa.ai•10mo ago

Hi @lostnobody. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- Refine uses the meta fields to infer the data types of the fields in your data provider's response. This is particularly useful when you're working with GraphQL data providers. You'll need to provide some meta values beforehand, and then the Inferencer will use these values to infer the fields of the data provider's response, generate a code, and a preview. For example, if you're working with a Hasura GraphQL Data Provider, by default, the data provider assumes that your ID type is uuid. You can change this behavior by using the idType option. You can pass Int or uuid as the value of idType option or use a function to determine the idType based on the resource name.

const myDataProvider = dataProvider(client, {  
 idType: "Int",  
});

const myDataProvider = dataProvider(client, {  
 idType: "Int",  
});

Or, you can pass a function to idType to determine the idType based on the resource name.

const idTypeMap: Record<string, "Int" | "uuid"> = {  
 users: "Int",  
 posts: "uuid",  
};  
  
const myDataProvider = dataProvider(client, {  
 idType: (resource) => idTypeMap[resource] ?? "uuid",  
});

const idTypeMap: Record<string, "Int" | "uuid"> = {  
 users: "Int",  
 posts: "uuid",  
};  
  
const myDataProvider = dataProvider(client, {  
 idType: (resource) => idTypeMap[resource] ?? "uuid",  
});

For more information, you can refer to the Refine Documentation (https://refine.dev/docs/packages/documentation/data-providers/graphql/) and the Hasura Data Provider Example (https://refine.dev/docs/examples/data-provider/hasura/). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•10mo ago

<@727080333387890738> kapa.ai is still learning and improving, please let us know how it did by reacting below

sensitive-blue•10mo ago

I am looking for fields like description, excerpt and slug. Which are defined within document as strings but for some reason, its showing selection dropdown.

sunny-green•10mo ago

Hello @lostnobody, you can check this documentation: https://refine.dev/docs/packages/documentation/inferencer/#how-the-fields-are-inferred Inferencer is doing that, and I want to emphasize that it doesn't give you complete code, it just tries to infer some data and generate code for you. You can copy/paste the generated code and modify as you need. Inferencer just gives you a starting point.

Inferencer | refine

@refinedev/inferencer is a package that provides a way to automatically generate views for resources based on the data structure. The aim is to reduce the amount of time spent on creating views for resources by generating the code automatically that can be customized easily.