useError

Returns the error message if the previous attempt to refresh data failed. Otherwise returns null

Whenever the data object succeeds in refreshing data, this will be reset to null.

Example

import { useData, useError, useLoading } from "@olenbetong/appframe-react";

function MyComponent() {
  let data = useData(dsMyDataObject);
  let error = useError(dsMyDataObject);
  let isLoading = useLoading(dsMyDataObject);

  return (
    <div>
      {error && <Alert severity="error">{error}</Alert>}
      {isLoading && <LinearProgress />}
      <ul>
        {data.map((record) => (
          <li key={record.PrimKey}>{record.Title}</li>
        ))}
      </ul>
    </div>
  );
}

API

export declare function useError(dataObject: DataObject<any>): string | null;