How to convert array of ActiveRecord models to CSV?

Question

I got an array of ActiveRecord models that I wish to convert to a CSV. I tried researching gems like FasterCSV, but they just seem to work with strings and arrays, not Activ

Answer 1

with julia_builder you can configure a csv export pretty easily.

class UserCsv < Julia::Builder
  # specify column's header and value
  column 'Birthday', :dob
  # header equals 'Birthday' and the value will be on `user.dbo`

  # when header and value are the same, no need to duplicate it.
  column :name
  # header equals 'name', value will be `user.name`

  # when you need to do some extra work on the value you can pass a proc.
  column 'Full name', -> { "#{ name.capitalize } #{ last_name.capitalize }" }

  # or you can pass a block
  column 'Type' do |user|
    user.class.name
  end
end

and then

users = User.all
UserCsv.build(users)