React HOC used to give a React component data from an Appframe data object

Usage no npm install needed!

<script type="module">
  import olenbetongReactDataObjectConnect from 'https://cdn.skypack.dev/@olenbetong/react-data-object-connect';


React Data Object Connect

Hooks to connect AppframeWeb data objects to React components.

Getting Started


Install using npm

npm install @olenbetong/react-data-object-connect

or include the IIFE build in a script

<script src="https://unpkg.com/@olenbetong/react-data-object-connect@latest/dist/iife/dataObjectHooks.min.js"></script>


If using a React with hooks, there are also data object hooks available.

  • useCurrentIndex(dataObject) - Returns only the current index
  • useCurrentRow(dataObject) - Returns the current record
  • useData(dataObject, options) - Returns an array with all records currently in the data object
  • useDataLength(dataObject) - Returns the current number of records in the data object
  • useDataWithFilter(dataObject, filter, type) - Like useData, but loads data with the given filter.
  • useDirty(dataObject) - Returns a boolean indicating if the current row is dirty or not
  • useError(dataObject) - Returns any loading error message
  • useFilter(dataObject, filter, type) - Refreshes data object whenever the filter changes
  • useLoading(dataObject) - Returns a boolean indicating if the data object is loading or not
  • useStatus(dataObject) - Returns booleans indicating if the data object is saving or deleting records
  • usePaging(dataObject) - Returns page, page count and a method to change the page
  • useParameter(dataObject, parameter) - Returns the current value of parameter
  • usePermissions(dataObject) - Returns booleans indicating if the user can delete, insert or update records

The above hooks uses the data objects internal state to pass data to the components. If you do not want to depend on the data objects current row or data storage, you can use the following hooks. They return data from the data object's data handler directly, and will not affect the data objects internal state.

  • useFetchData(dataObject, filter) - Returns data matching the filter. If the filter is set to false, data will not be loaded.
  • useFetchRecord(dataObject, filter) - Use if the filter is expected to only return a single row. If multiple rows are returned from the server, only the first record will be returned to the component.

One hook is also available for procedures.

  • useProcedure(procedure, parameters, options) - Returns an object containing data, execute, isExecuting and error properties. Executes whenever the procedure or parameters arguments change. execute can be used to manually execute the procedure again

useData options

useData accepts a second options argument. Available options are:

  • includeDirty (default true) - Includes currently dirty data in the dataset. Disable this to optimize if the data is used many places.


Getting all state from the data object

This will list all reacords in the data object, and create an editor for the current row.

import {
} from "@olenbetong/react-data-object-connect";

function MyFunctionComponent(props) {
  const currentIndex = useCurrentIndex(dsMyDataObject);
  const myRecord = useCurrentRow(dsMyDataObject);
  const myRecords = useData(dsMyDataObject);
  const count = useDataLength(dsMyDataObject);
  const isDirty = useDirty(dsMyDataObject);
  const error = useError(dsMyDataObject);
  const isLoading = useLoading(dsMyDataObject);
  const { isDeleting, isSaving } = useStatus(dsMyDataObject);
  const { allowDelete, allowInsert, allowUpdate } = usePermissions(dsMyDataObject);
  const filter = useParameter(dsMyDataObject, "filterString");

  return (
      {isLoading && <i className="fa fa-spin fa-spinner" />}
      {error && <Error message={error} />}
      <MyEditor {...myRecord} isDirty={isDirty} />
      {myRecords.map(record => (
        <ListItem {...item} />
      There are {count} records matching {filter}

Automatically getting data with a given filter.

If you want to conditionally load data, you may set the filter to false.

import { useDataWithFilter, useLoading } from "@olenbetong/react-data-object-connect";

function MyComponent({ someId }) {
  const isLoading = useLoading(dsMyDataObject);
  const data = useDataWithFilter(dsMyDataObject, `[SomeID] = ${someId}`);

  return (
      {isLoading && <i className="fa fa-spin fa-spinner" />}
      {data.map(record => (
        <ListItem {...record} />

Getting data from the data source without affecting the data object

If you want to conditionally load data, you may set the filter to false.

The refreshRows method can be used to update only a subset of the current data. The first parameter is the filter that will be used to fetch data. The second parameter is the field that will be used to compare fetched data with current data (defaults to PrimKey). If the refreshRows fetches records that are not in the current set, they will not be added.

import { useFetchData, useFetchRecord } from "@olenbetong/react-data-object-connect";

function MyFunctionComponent(props) {
  const { isLoading, data, refresh, refreshRows } = useFetchData(dsMyDataObject, `[EntityCategory] = 1`);

  return (
      {isLoading && <i className="fa fa-spin fa-spinner" />}
      {data.map(data => (
        <ListItem {...item} onRefresh={refreshRows(`[PrimKey] = '${item.PrimKey}'`, "PrimKey")} />

function MyRecordComponent(props) {
  const { isLoading, record, refresh } = useFetchRecord(dsMyDataObject, `[EntityID] = ${props.id}`);

  return (
      {isLoading && <Spinner />}
      <button onClick={refresh}>
        <i className="fa fa-refresh" /> Refresh
      <MyEditor {...record} />

Executing a stored procedure

If 'Parameter', 'OtherParam', 'ThirdParam' are not valid parameters for 'procMyProcedure', they will be removed before executing the procedure. This way the procedure can be executed even if the actual parameters haven't changed. If 'removeInvalidParameters' isn't set to true, an error will occur instead.

import { useProcedure } from "@olenbetong/react-data-object-connect";

function MyComponent() {
  const { data, execute, error, isExecuting } = useProcedure(
      Parameter: "value",
      OtherParam: 52,
      ThirdParam: "Oh, hai!",
    { removeInvalidParameters: true }

  return (
      <button onClick={execute}>Refresh data</button>
      {error && <div className="alert alert-danger">{error}</div>}
      {isExecuting && <Spinner />}
      {data && data.length > 0 && data[0].map(record => <RecordComponent key={record.IdentityField} {...record} />)}

Paging component

import { usePaging } from "@olenbetong/react-data-object-connect";

function PagingComponent() {
  const { changePage, page, pagecount } = usePaging(dsMyDataObject);

  return (
      <button onClick={() => changePage(page - 1)} disabled={page <= 0}>
      Page {page + 1} of {pageCount}
      <button onClick={() => changePage(page + 1)} disabled={page + 1 >= pageCount}>


See the GitHub releases page