Prevent Editing of a Field

If you have some fields that need to be imported but you don't want the user to edit the field, you can use a Data Hook like this to prevent editing. The following Data Hook is formatted for Portal 2.0 - if you are using Portal 3.0 or Workspaces and would like a similar Data Hook, please reach out to support@flatfile.com. 

// container for values of firstName field that shouldn't be edited
let fnameNoEdit = [];

importer.registerRecordHook(async (record, index, mode) => {
  let out = {};

  // store every value of field as it's loaded into Flatfile and
  // show user that it shouldn't be edited
  if (record.firstName && mode === "init") {
    out.firstName = {
      value: record.firstName,
      info: [{ message: "This field can not be edited", level: "info" }]
    };
    fnameNoEdit[index] = out.firstName;
  }

  // If user does change the field, reset the value to what it was
  if (record.firstName && mode === "change") {
    if (record.firstName !== fnameNoEdit[index].value) {
      out.firstName = {
        value: fnameNoEdit[index].value,
        info: [{ message: "This field can not be edited", level: "warning" }]
      };
    }
  }

  return out;
});