Ability to have multiple names for each column about active_importer

[gnapse]

Interesting suggestion. Let me give it a thought about the implementation and the possible consequences.

At first, it comes to mind the fact that the column names need to be unique. It cannot happen something like:

column %w(unit units), :unit
column %w(units), :units

Also, we have to consider the possibility that, in an example like yours (column ['unit', 'units'], :unit), what if the spreadsheet file comes with a column header 'unit' and another column with header 'units'?

As a side note, this suggestion also relates to a feature I've been thinking about, that the column names should be matched disregarding case, so a column named 'first name' would match a spreadsheet column with a header like 'First Name'.

[gnapse]

@khelal I'm working on a fairly large rewrite of the gem, that includes this possibility. Stay tuned.