comma use example

comma_example.rb

class CommaModel < ActiveRecord::Base
  # =======
  # = CSV =
  # =======
  comma do
    some_column
    native_column
    association  :to_s => 'Custom Label'
    column_with_lambda 'Custom Header' do |p| p && Money.new(p) end
    association_2 { |s| "'#{s.to_s(:csv)}" }
  end
end

#Specs

it 'collection should respond to #to_comma' do
  CommaModel.first(2).should respond_to(:to_comma)
end

it 'should respond to #to_comma' do
  CommaModel.first.should respond_to(:to_comma)
end

    it 'should export all rows to csv format' do
      @model = CommaModel.first

      expected = <<-EOF
Column Header, Another Column Header, Some more
123, 355.93, 1930.09
EOF
      @model.to_comma.should == expected
    end
  end