Option ->merge('field-to-match')

[FrodeMMeling]

If the importfile contains a record that already exist and a column has the unique constraint. it crashes.. It would have been nice to have an option like the required(), where you state mergeEqualsBasedOn('field').

Then if the column in excel matches a record you merge changes instead of failing.

Then also a "ignoreEqualsBasedOn" can maybe also be a feature?

[frankyso]

That's great idea, ill try to cover it when im available, or you can free to create a PR for the feature 😊