Module: Utility

Defined in:
lib/generators/leolay/templates/lib/utility.rb

Overview

Utility for general purpose

Class Method Summary collapse

Class Method Details

.export(params = {}) ⇒ Object

Exports data from a collection using fastercsv gem



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# File 'lib/generators/leolay/templates/lib/utility.rb', line 4

def self.export(params={})
  require 'fastercsv'

  return "" unless params[:collection] && params[:collection].size>0
  collection = add_collection params[:collection]

  head = params[:head]
  head = collection.first.keys if !head && collection && collection.first
  head = [] unless head

  p18n = params[:i18n]
  p18n = "activerecord.attributes.#{params[:collection].first.class.to_s.downcase.to_sym}" if p18n == true #only if boolean and equal true
  p18n_generic = "activerecord.attributes.generic"

  str = FasterCSV.generate(:col_sep => params[:col_sep] || ";") do |csv|
    generic_fields = %w(id created_at updated_at)
    head.map!{|e| generic_fields.include?(e) ? I18n.t("#{p18n_generic}.#{e}") : I18n.t("#{p18n}.#{e}")} if p18n
    csv << head

    collection.each do |record|
      #each record is an hash
      csv << record.values.map do |v|
        case v.class.to_s
        when 'Time', 'Date'
          v.strftime "%d/%m/%Y"
        else
          v
        end
      end
    end
  end
  str
end