blah.jsx

let DocumentConnector = connect((state, ownProps) => {
  return {
    document: lookupDocument(state, ownProps.documentId),
  }
}, (dispatch) => {
  // Note: this is actually the default behavior if mapPropsToDispatch is null
  // I'm just including it here for clarity
  return {dispatch}
}, ({document}, {dispatch}, {documentId}) => {
  return {
    children: <ViewComponent document={document} />,
    sidebar: <Sidebar document={document} />,
    title: document.title,
    onDocumentUpdate(event) {
      dispatch(updateDocument(documentId, event))
    },
    documentId,
  };
})


<Route path="/document/:id" render={({id}) => <DocumentConnector(LayoutComponent) documentId={id} />} />