wehub-resource-sync
88 lines
2.7 KiB
Plaintext
88 lines
2.7 KiB
Plaintext
---
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title: SWR hooks
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sidebarTitle: SWR
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description: Fetch and cache data using SWR-based hooks
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---
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SWR hooks use the [swr](https://swr.vercel.app/) library to fetch data once and cache it. These hooks are useful when you need to fetch data without real-time updates.
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<Note>
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While SWR can be configured to poll for updates, we recommend using our other [Realtime
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hooks](/realtime/react-hooks/) for most use-cases due to rate-limits and the way the Trigger.dev
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API works.
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</Note>
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## useRun
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The `useRun` hook allows you to fetch a run by its ID.
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```tsx
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"use client"; // This is needed for Next.js App Router or other RSC frameworks
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import { useRun } from "@trigger.dev/react-hooks";
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export function MyComponent({ runId }: { runId: string }) {
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const { run, error, isLoading } = useRun(runId);
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if (isLoading) return <div>Loading...</div>;
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if (error) return <div>Error: {error.message}</div>;
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return <div>Run: {run.id}</div>;
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}
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```
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The `run` object returned is the same as the [run object](/management/runs/retrieve) returned by the Trigger.dev API. To correctly type the run's payload and output, you can provide the type of your task to the `useRun` hook:
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```tsx
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import { useRun } from "@trigger.dev/react-hooks";
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import type { myTask } from "@/trigger/myTask";
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export function MyComponent({ runId }: { runId: string }) {
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const { run, error, isLoading } = useRun<typeof myTask>(runId, {
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refreshInterval: 0, // Disable polling
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});
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if (isLoading) return <div>Loading...</div>;
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if (error) return <div>Error: {error.message}</div>;
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// Now run.payload and run.output are correctly typed
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return <div>Run: {run.id}</div>;
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}
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```
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## Common SWR options
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You can pass the following options to the all SWR hooks:
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<ParamField path="revalidateOnFocus" type="boolean">
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Revalidate the data when the window regains focus.
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</ParamField>
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<ParamField path="revalidateOnReconnect" type="boolean">
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Revalidate the data when the browser regains a network connection.
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</ParamField>
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<ParamField path="refreshInterval" type="number">
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Poll for updates at the specified interval (in milliseconds). Polling is not recommended for most
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use-cases. Use the Realtime hooks instead.
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</ParamField>
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## Common SWR return values
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<ResponseField name="error" type="Error">
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An error object if an error occurred while fetching the data.
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</ResponseField>
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<ResponseField name="isLoading" type="boolean">
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A boolean indicating if the data is currently being fetched.
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</ResponseField>
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<ResponseField name="isValidating" type="boolean">
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A boolean indicating if the data is currently being revalidated.
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</ResponseField>
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<ResponseField name="isError" type="boolean">
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A boolean indicating if an error occurred while fetching the data.
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</ResponseField>{" "}
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