Disabling/Pausing Queries

If you ever want to disable a query from automatically running, you can use the enabled = false option.

When enabled is false:

If the query has cached data
- The query will be initialized in the status === 'success' or isSuccess state.
If the query does not have cached data
- The query will start in the status === 'idle' or isIdle state.
The query will not automatically fetch on mount.
The query will not automatically refetch in the background when new instances mount or new instances appearing
The query will ignore query client invalidateQueries and refetchQueries calls that would normally result in the query refetching.
refetch can be used to manually trigger the query to fetch.

function Todos() {
  const {
    isIdle,
    isLoading,
    isError,
    data,
    error,
    refetch,
    isFetching,
  } = useQuery('todos', fetchTodoList, {
    enabled: false,
  })

  return (
    <>
      <button onClick={() => refetch()}>Fetch Todos</button>

      {isIdle ? (
        'Not ready...'
      ) : isLoading ? (
        <span>Loading...</span>
      ) : isError ? (
        <span>Error: {error.message}</span>
      ) : (
        <>
          <ul>
            {data.map(todo => (
              <li key={todo.id}>{todo.title}</li>
            ))}
          </ul>
          <div>{isFetching ? 'Fetching...' : null}</div>
        </>
      )}
    </>
  )
}

function Todos() {
  const {
    isIdle,
    isLoading,
    isError,
    data,
    error,
    refetch,
    isFetching,
  } = useQuery('todos', fetchTodoList, {
    enabled: false,
  })

  return (
    <>
      <button onClick={() => refetch()}>Fetch Todos</button>

      {isIdle ? (
        'Not ready...'
      ) : isLoading ? (
        <span>Loading...</span>
      ) : isError ? (
        <span>Error: {error.message}</span>
      ) : (
        <>
          <ul>
            {data.map(todo => (
              <li key={todo.id}>{todo.title}</li>
            ))}
          </ul>
          <div>{isFetching ? 'Fetching...' : null}</div>
        </>
      )}
    </>
  )
}

Disabling/Pausing Queries

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