preSavePage hook in Celigo

The preSavePage hook is invoked on a page of records before the page is sent to subsequent steps in your flow. This hook can be used to add, update or delete records. This hook is a great place to execute logic on batches of records at the same time. For example:

• Filter or group records in batches
• Apply calculations in batches
• Perform complex data transformations in batches
• Validate data and return errors for records

Example: This preSavePage hook function replaces a potentially large sub-object with an error message if its size exceeds 500,000 characters (approximately 1 MB) in each data record.

function swapHugeSubObjectWithInlineErrorMsg (options) {
  options.data.forEach(function(d) {
    let size = JSON.stringify(d.potentiallyBigSubObject).length
    if (size > 500000) {
      d.potentiallyBigSubObject = {
        errorMessage: "potentiallyBigSubObject  1MB"
      }
    }
  })
  return {
    data: options.data,
    errors: options.errors,
    abort: false
  }
}