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# lifted from http://readlist.com/lists/lists.rubyonrails.org/rails/7/38240.html
# originally by Derek Neighbors
# see http://vpim.rubyforge.org/ for more info

# This allows us to get a contact back as html, xml or vcard.
def show
	respond_to do |format|
		format.html
		format.xml { render :xml => @contact.to_xml }

		format.vcf do
			send_data @contact.to_vcard, :filename => "#{@contact.id}.vcf",
			:type => 'text/directory'
		end
	end
end

# Then in the contact model you can add something like:

def to_vcard
	card = Vpim::Vcard::Maker.make2 do |maker|
		maker.add_name do |name|
			name.prefix = prefix unless self.prefix.blank?
			name.given = first_name
			name.family = last_name
			name.suffix = suffix unless self.suffix.blank?
		end

		if preferred_location
			maker.add_addr do |addr|
				addr.preferred = true
				addr.location = 'work'
				addr.street = preferred_location.address_line_1 	unless preferred_location.address_line_1.blank?
				addr.locality = preferred_location.city 					unless preferred_location.city.blank?
				addr.postalcode = preferred_location.postal_code	unless preferred_location.postal_code.blank?
				addr.country = preferred_location.country 				unless preferred_location.country.blank?
			end

			maker.add_tel(preferred_location.voice_number) do |tel|
				tel.location = 'work'
				tel.preferred = true
			end unless preferred_location.voice_number.blank?

			maker.add_tel(preferred_location.fax_number) do |tel|
				tel.location = 'work'
				tel.capability = 'fax'
			end unless preferred_location.fax_number.blank?

			maker.add_email(preferred_location.email) do |e|
				e.location = 'work'
				e.preferred = 'yes'
			end unless preferred_location.email.blank?
		end
	end

	card.to_s
end