Module: ActiveModel::Serializers::CSV

Includes:
ActiveModel::Serialization
Defined in:
lib/cloudxls-rails/activemodel.rb

Instance Method Summary collapse

Instance Method Details

#as_csv(options = nil) ⇒ Object

Returns an array representing the model. Some configuration can be passed through options.

Without any options, the returned Array will include all the model’s attributes.

user = User.find(1)
user.as_csv
# => [1, "Konata Izumi", 16, "2006-08-01", true]

The :only and :except options can be used to limit the attributes included, and work similar to the attributes method.

user.as_csv(only: [:id, :name])
# => [1, "Konata Izumi"]

user.as_csv(except: [:id, :created_at, :age])
# => ["Konata Izumi", true]

To include the result of some method calls on the model use :methods:

user.as_csv(methods: :permalink)
# => [1, "Konata Izumi", 16, "2006-08-01", true, "1-konata-izumi"]



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# File 'lib/cloudxls-rails/activemodel.rb', line 32

def as_csv(options = nil)
  options ||= {}

  attribute_names = attributes.keys
  if only = options[:only]
    attribute_names = Array(only).map(&:to_s).select do |key|
      attribute_names.include?(key)
    end
  elsif except = options[:except]
    attribute_names -= Array(except).map(&:to_s)
  end

  arr = []
  attribute_names.each do |n|
    arr.push(read_attribute_for_serialization(n).as_csv)
  end

  Array(options[:methods]).each do |m|
    if respond_to?(m)
      val = send(m)
      if idx = attribute_names.index(m.to_s)
        arr[idx] = val
      else
        arr.push(val)
      end
    end
  end

  arr
end