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

K

kapa.ai•9/26/23, 6:18 AM

Hi @ganuzaz. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base.

K

kapa.ai•9/26/23, 6:18 AM

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Yes, you can prevent a hook from calling the API if a variable is still undefined. In the case of the

useOne

useOne

useOne

useOne hook, you can use the

queryOptions

queryOptions

property to control when the hook should fetch data. By setting the

enabled

enabled

enabled

enabled option to

false

false

, the hook will not fetch data until

enabled

enabled

enabled

enabled is set to

true

true

true

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,
  },
});

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

useOne

useOne

useOne hook will not fetch data until

firstData?.id

firstData?.id

firstData?.id

firstData?.id is defined.

For more information, refer to the useOne
useOne
useOne
useOne documentation (https://refine.dev/docs/api-reference/core/hooks/data/useOne/).
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K

kapa.ai•9/26/23, 6:18 AM

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

C

constitutional-coralOP•9/26/23, 6:19 AM

nice