ruby-on-railsloggingactiondispatch

How to filter nested parameters from Rails logs

I see that I can filter keys from Rails logs here, but it's not entirely clear how I can filter a key that is nested inside the parameter hash.

My params hash looks like this:

{"download"=>{"attachment_id"=>"54039", "data"=>"data:image/png;base64,iVBORw0..."}}

Where params[:download][:data] is a base64 string. It is a large amount of data and I would like to remove it from my logs.

Is this possible?

I'm using Rails 4.0.4

Solution

  • Simply put this in application.rb:

    config.filter_parameters += [:data]

    This would filter nested [:data] keys also.

    In rails 5, you can define hierarchy of the key:

    config.filter_parameters += ["download.data"]

    This would filter all the [:data] keys which have [:download] as the immediate parent.