Make blank params[] nil

Question

When a user submits a form and leaves certain fields blank, they get saved as blank in the DB. I would like to iterate through the params[:user] collection (for example) an

Answer 1

Here is how I did it.

def remove_empty_params(param, key)
  param[key] = param[key].reject { |c| c.empty? }
end

and call it with

remove_empty_params(params[:shipments], :included_clients)

No need to get super tricky in the model. And this way you can control which params get cleaned up.

params = {
      "shipments"=>{
        "included_clients" => ["", "4"]
      }
    }

will turn into

>> params["shipments"]
=> {"included_clients" => ["4"] }