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# = Address Logic
#
# This is a simple module that you can include into any classm as long as it has a street1, street2, city, state, zip, and country (optional)
# methods. Just include it into your class like so:
#
# class Address
# apply_addresslogic :fields => [:street1, :street2, :city, [:state, :zip], :country]
# end
#
# The above will return:
# ["Street1", "Street2", "City", "State Zip", "Country"]
#
# This adds a sigle method: address_parts. More on this method below...
module Addresslogic
def self.included(base)
base.extend ClassMethods
end
module ClassMethods
attr_accessor :address_parts_fields
def apply_addresslogic(args = {})
self.address_parts_fields = args[:fields] || [:street1, :street2, [:city, [:state, :zip]], :country]
include Addresslogic::InstanceMethods
end
end
module InstanceMethods
# Returns the parts of an address in an array. Example:
#
# ["Street1", "Street2", "City", "State Zip", "Country"]
#
# This makes displaying addresses on your view pretty simple:
#
# address.address_parts.join("<br />")
#
# === Options
#
# * <tt>only:</tt> fields you want included in the result
# * <tt>except:</tt> any fields you want excluded from the result
def address_parts(*args)
options = args.last.is_a?(Hash) ? args.pop : {}
options[:only] = [options[:only]] if options[:only] && !options[:only].is_a?(Array)
options[:except] = [options[:except]] if options[:except] && !options[:except].is_a?(Array)
fields = args[0] || address_parts_fields
level = args[1] || 0
parts = []
fields.each do |field|
if field.is_a?(Array)
has_sub_array = field.find { |item| item.is_a?(Array) }
separator = has_sub_array ? ", " : " "
sub_parts = address_parts(field, level + 1, options).join(separator)
next if sub_parts.empty?
parts << sub_parts
else
next if !respond_to?(field)
value = send(field)
next if value.to_s.strip == "" || (options[:only] && !options[:only].include?(field)) || (options[:except] && options[:except].include?(field))
parts << value
end
end
parts
end
private
def address_parts_fields
self.class.address_parts_fields
end
end
end
Object.send(:include, Addresslogic)
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