Using MailChimp API to send email campaigns to a dynamic set of email addresses

gistfile1.rb

# Sample code for sending MailChimp Email Campaigns from a Rails App using Gibbon API wrapper v0.3.5
# All recipients must already be on the associated MailChimp list (list_id), for this app we add those via another
# API call every few minutes.
#
# Member function of EmailCampaign.rb model
# See http://labs.saidigital.co/using-mailchimp-api-to-send-email-campaigns-to-a-dynamic-set-of-email-addresses-425/
# for explanation.
def send_campaign(api_key, gb, list_id, template_id, from_name, from_email)
  self.reset_unique_id
  segment_id = gb.list_static_segment_add(:id => list_id, :name => self.safe_name)
  logger.info "Segment ID: #{segment_id}"

  recipients = self.get_recipients
  segmented_emails = recipients.collect{ |e| e.email }.uniq
  logger.info "####### SENDING TO: #######"
  logger.info segmented_emails
  logger.info "###########################"
  if segmented_emails.blank?
    logger.debug "No email addresses found."
    self.mailchimp_campaign_id = 'NO RECIPIENTS'
    self.save(:validate => false)
  else
    emails_added = gb.list_static_segment_members_add( :id => list_id,
                                                       :seg_id => segment_id,
                                                       :batch => segmented_emails )

    logger.info "Email Added: #{emails_added}"
    content_section = AppSetting.where(:name => 'MailChimp Main Content Section').first.value

    conditions = [:field => :static_segment, :value => segment_id,  p => 'eq']
    campaign_id = gb.campaign_create(
                           :type => 'regular',
                            ptions => { :list_id => list_id,
                                         :subject => self.subject,
                                         :from_email => from_email,
                                         :from_name => from_name,
                                         :title => self.safe_name,
                                         :template_id => template_id},
                           :content => { ('html_' + content_section).to_sym => self.get_body,
                                         :text => self.body },
                           :segment_opts => { :match => 'all', :conditions => conditions }
                        )

    puts "\n"
    puts "Campaign ID: #{campaign_id}"
    puts "\n"

    sent = gb.campaign_send_now( :cid => campaign_id )
    self.mailchimp_campaign_id = campaign_id
    self.prospect_forms << recipients
    self.save(:validate => false)
  end
rescue
  logger.info "Crashed on scheduling email_campaign ID: #{self.id}"
end