flat-fuchsia•16mo ago

Is there any way to prevent hook from calling api if variable is still undefined?

Is there any way to prevent hook from calling api if variable is still undefined in a single component? for example useOne will retrieve an ID that will be used on another useOne

3 Replies

kapa.ai•16mo ago

Hi @ganuzaz. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- Yes, you can prevent a hook from calling the API if a variable is still undefined. In the case of the useOne hook, you can use the queryOptions property to control when the hook should fetch data. By setting the enabled option to false, the hook will not fetch data until enabled is set to true. Here is an example of how you can use it:

const { data: firstData, isLoading: firstLoading } = useOne({
  resource: "firstResource",
  id: "firstId",
});

const { data: secondData, isLoading: secondLoading } = useOne({
  resource: "secondResource",
  id: firstData?.id,
  queryOptions: {
    enabled: !!firstData?.id,
  },
});

const { data: firstData, isLoading: firstLoading } = useOne({
  resource: "firstResource",
  id: "firstId",
});

const { data: secondData, isLoading: secondLoading } = useOne({
  resource: "secondResource",
  id: firstData?.id,
  queryOptions: {
    enabled: !!firstData?.id,
  },
});

In this example, the second useOne hook will not fetch data until firstData?.id is defined. For more information, refer to the useOne documentation (https://refine.dev/docs/api-reference/core/hooks/data/useOne/). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•16mo ago

<@149140198213550080> kapa.ai is still learning and improving, please let us know how it did by reacting below

flat-fuchsiaOP•16mo ago

nice