rich-copper•4mo ago

useCustom call function directly

I am wanting to call the function that useCustom would call to fetch reason being I have some components for filters that need to call this function async and i cant use the hook

7 Replies

kapa.ai•4mo ago

Hi @Joe Gaffney. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- The useCustom hook in Refine is designed to send custom query requests and it uses the custom method as the query function from the dataProvider which is passed to <Refine>. It expects the url and method properties, which will be passed to the custom method from the dataProvider as parameters. When properties are changed, the useCustom hook will trigger a new request. However, useCustom is a hook and hooks in React can't be called directly or conditionally, they must be used at the top level of a React function component or within a custom hook. If you need to call a function directly, you might need to create a custom function that uses the custom method from the dataProvider directly, outside of a hook. This would involve interacting with your dataProvider directly, which might require a deeper understanding of how your dataProvider is set up. Here's an example of how useCustom is used:

import { useCustom, useApiUrl } from "@refinedev/core";  
  
interface PostUniqueCheckResponse {  
 isAvailable: boolean;  
}  
  
const apiUrl = useApiUrl();  
  
const { data, isLoading } = useCustom<PostUniqueCheckResponse>({  
 url: `${apiUrl}/posts-unique-check`,  
 method: "get",  
 config: {  
 headers: {  
 "x-custom-header": "foo-bar",  
 },  
 query: {  
 title: "Foo bar",  
 },  
 },  
});

import { useCustom, useApiUrl } from "@refinedev/core";  
  
interface PostUniqueCheckResponse {  
 isAvailable: boolean;  
}  
  
const apiUrl = useApiUrl();  
  
const { data, isLoading } = useCustom<PostUniqueCheckResponse>({  
 url: `${apiUrl}/posts-unique-check`,  
 method: "get",  
 config: {  
 headers: {  
 "x-custom-header": "foo-bar",  
 },  
 query: {  
 title: "Foo bar",  
 },  
 },  
});

In this example, useCustom is used to send a GET request to the posts-unique-check endpoint of the API. The url and method properties are passed to the custom method from the dataProvider as parameters. For more information, you can refer to the useCustom documentation (https://refine.dev/docs/data/hooks/use-custom). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•4mo ago

<@422289470487003153> kapa.ai is still learning and improving, please let us know how it did by reacting below

rich-copper•4mo ago

@kapa.ai But how would i call this function directly not from the hook is there a way to get the function call from the hook but not call it so i can call it later

kapa.ai•4mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- In React, hooks are designed to be used directly in the component or inside other hooks. They cannot be called or stored for later use outside of these contexts. This is due to the way hooks maintain and manage state and side effects within the React component lifecycle. If you need to perform an asynchronous operation based on an event (like a button click or a form submission), you could consider using a callback function or an event handler inside your component. This function can then use the hook and perform the necessary operations. However, if you need to call a function directly and not from a hook, you might need to interact with your data provider directly. This would involve using the custom method from your data provider, which is what the useCustom hook uses under the hood. This would require a deeper understanding of your data provider and how it's set up. Unfortunately, without more specific information about your data provider and your use case, it's difficult to provide a more detailed answer. I would recommend checking the documentation for your specific data provider for more information on how to use it directly. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•4mo ago

<@422289470487003153> kapa.ai is still learning and improving, please let us know how it did by reacting below

rich-copper•4mo ago

@kapa.ai how can i call the custom method on the data provider without using the hook

kapa.ai•4mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- To call the custom method on the data provider directly without using the useCustom hook, you would need to interact with your data provider directly. This would involve creating an instance of your data provider and then calling the custom method on that instance. Here's a general example of how you might do this:

import dataProvider from "@refinedev/simple-rest";  

const myDataProvider = dataProvider("API_URL");  

const customMethod = async () => {
  const response = await myDataProvider.custom({ 
    url: "your_custom_url", 
    method: "your_http_method", 
    // other parameters as needed
  });
  return response;
};

// Call the function
customMethod();

import dataProvider from "@refinedev/simple-rest";  

const myDataProvider = dataProvider("API_URL");  

const customMethod = async () => {
  const response = await myDataProvider.custom({ 
    url: "your_custom_url", 
    method: "your_http_method", 
    // other parameters as needed
  });
  return response;
};

// Call the function
customMethod();

In this example, dataProvider is imported from @refinedev/simple-rest, which is one of the data providers supported by Refine. An instance of the data provider is created with dataProvider("API_URL"), and then the custom method is called on that instance. Please replace "API_URL", "your_custom_url", and "your_http_method" with your actual API URL, the custom URL, and the HTTP method you want to use, respectively. Remember that this is a general example and the actual implementation might vary depending on the specifics of your data provider and your use case. Always refer to the documentation of your specific data provider for more accurate information. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------