@@ -116,6 +116,16 @@ end And of course, you could pass all options at once. I've just shown them separately to focus on each point. Enjoy. +h4. Multiple Fields + +Let's say you have 'first_name' and 'last_name' columns in your users table. You may want to display the full name in the selection box. Well, if you pass an array to the @acts_as_lookup@ helper, it will automatically construct the selection text. It also validates that each of the attrs exist, so make sure they do :-) + +<pre></code> +class Category < ActiveRecord::Base + acts_as_lookup [:first_name, :last_name] +end +</pre></code> + h2. License Copyright (c) 2008 Ryan Heath, released under the MIT license \ No newline at end of file README.textile @@ -1,5 +1,20 @@ module RPH module ActsAsLookup + module Error + class CustomError < RuntimeError + def self.message(msg=nil); msg.nil? ? @message : self.message = msg; end + def self.message=(msg); @message = msg; end + end + + # custom error classes + class InvalidAttr < CustomError + message "attr passed to `acts_as_lookup' does not exist"; end + class InvalidLookup < CustomError + message "model passed to `lookup_for' does not have the `act_as_lookup' declaration"; end + class InvalidModel < CustomError + message "model passed to `lookup_for' does not seem to exist"; end + end + def self.included(base) base.extend ActMethods end @@ -9,19 +24,24 @@ module RPH # class Category < ActiveRecord::Base # acts_as_lookup :title # end + # + # class User < ActiveRecord::Base + # acts_as_lookup [:first_name, :last_name] + # end def acts_as_lookup(field_to_select, optionz={}) - raise(Error::InvalidAttr, Error::InvalidAttr.message) unless self.new.respond_to?(field_to_select) + valid_attributes = [field_to_select].flatten.all? { |attr| self.new.respond_to?(attr) } + raise(Error::InvalidAttr, Error::InvalidAttr.message) unless valid_attributes options = { :default_text => '--', - :order => "#{field_to_select.to_s}" + :order => [field_to_select].flatten.compact.join(',') }.merge!(optionz) - class_inheritable_accessor :options, :field_to_select + class_inheritable_accessor :options, :field_to_select, :selection_text extend ClassMethods self.options = options - self.field_to_select = field_to_select.to_sym + self.field_to_select = field_to_select end end @@ -34,7 +54,14 @@ module RPH def options_for_select rows = self.find(:all, :conditions => (options[:conditions] || {}), :order => options[:order]) default_selection = (options[:default_text] == :first ? [] : [[options[:default_text], nil]]) - default_selection + rows.collect { |r| [r.send(field_to_select), r.id] } + default_selection + rows.collect do |r| + [ + field_to_select.is_a?(Array) ? + field_to_select.inject([]) { |attrs, attr| attrs << r.send(attr) }.compact.join(' ') : + r.send(field_to_select), + r.id + ] + end end end @@ -71,7 +98,7 @@ module RPH rescue NameError raise(Error::InvalidModel, Error::InvalidModel.message) end - raise(Error::InvalidLookup, Error::InvalidLookup.message) unless klass && klass.respond_to?(:field_to_select) && klass.respond_to?(:options_for_select) + raise(Error::InvalidLookup, Error::InvalidLookup.message) unless klass && klass.respond_to?(:options_for_select) select(obj.to_sym, f_key.to_sym, klass.options_for_select, options, html_options) end @@ -88,21 +115,5 @@ module RPH end end end - - # error module to raise plugin specific errors - module Error - class CustomError < RuntimeError - def self.message(msg=nil); msg.nil? ? @message : self.message = msg; end - def self.message=(msg); @message = msg; end - end - - # custom error classes - class InvalidAttr < CustomError - message "attr passed to `acts_as_lookup' does not exist"; end - class InvalidLookup < CustomError - message "model passed to `lookup_for' does not have the `act_as_lookup' declaration"; end - class InvalidModel < CustomError - message "model passed to `lookup_for' does not seem to exist"; end - end end end \ No newline at end of file lib/acts_as_lookup.rb 8981071a11aaff2d584d5fcc16d5f0505d57f08f rpheath rpheath@gmail.com http://github.com/rpheath/acts_as_lookup/commit/ffea0659a2e527288f24721aa68829a8fdf1f5f7 ffea0659a2e527288f24721aa68829a8fdf1f5f7 2009-03-19T11:10:55-07:00 2009-03-19T11:10:55-07:00 added ability to pass multiple fields for selection text in drop downs (e.g. acts_as_lookup [:first_name, :last_name]) f683f046d225c05b0e3e2e3700ff0430e23fd432 rpheath rpheath@gmail.com