From 9323fb60572815fc63fa618a5bd17b68cf8c8e35 Mon Sep 17 00:00:00 2001
From: Carlos Antonio da Silva <carlosantoniodasilva@gmail.com>
Date: Tue, 31 Jan 2012 15:45:59 -0200
Subject: Create collection_radio_buttons helper
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[Carlos Antonio da Silva + Rafael Mendonça França]
---
 .../lib/action_view/helpers/form_options_helper.rb |  4 +
 actionpack/lib/action_view/helpers/tags.rb         | 31 ++++----
 .../helpers/tags/collection_radio_buttons.rb       | 85 ++++++++++++++++++++++
 3 files changed, 105 insertions(+), 15 deletions(-)
 create mode 100644 actionpack/lib/action_view/helpers/tags/collection_radio_buttons.rb

(limited to 'actionpack/lib')

diff --git a/actionpack/lib/action_view/helpers/form_options_helper.rb b/actionpack/lib/action_view/helpers/form_options_helper.rb
index c4cdfef4a2..5ca2f2abdc 100644
--- a/actionpack/lib/action_view/helpers/form_options_helper.rb
+++ b/actionpack/lib/action_view/helpers/form_options_helper.rb
@@ -191,6 +191,10 @@ module ActionView
         Tags::CollectionSelect.new(object, method, self, collection, value_method, text_method, options, html_options).render
       end
 
+      def collection_radio_buttons(object, method, collection, value_method, text_method, options = {}, html_options = {}, &block)
+        Tags::CollectionRadioButtons.new(object, method, self, collection, value_method, text_method, options, html_options).render(&block)
+      end
+
       # Returns <tt><select></tt>, <tt><optgroup></tt> and <tt><option></tt> tags for the collection of existing return values of
       # +method+ for +object+'s class. The value returned from calling +method+ on the instance +object+ will
       # be selected. If calling +method+ returns +nil+, no selection is made without including <tt>:prompt</tt>
diff --git a/actionpack/lib/action_view/helpers/tags.rb b/actionpack/lib/action_view/helpers/tags.rb
index e874d4ca42..fa19cf2dba 100644
--- a/actionpack/lib/action_view/helpers/tags.rb
+++ b/actionpack/lib/action_view/helpers/tags.rb
@@ -4,27 +4,28 @@ module ActionView
       extend ActiveSupport::Autoload
 
       autoload :Base
+      autoload :CheckBox
+      autoload :CollectionRadioButtons
+      autoload :CollectionSelect
+      autoload :DateSelect
+      autoload :DatetimeSelect
+      autoload :EmailField
+      autoload :FileField
+      autoload :GroupedCollectionSelect
+      autoload :HiddenField
       autoload :Label
-      autoload :TextField
+      autoload :NumberField
       autoload :PasswordField
-      autoload :HiddenField
-      autoload :FileField
+      autoload :RadioButton
+      autoload :RangeField
       autoload :SearchField
+      autoload :Select
       autoload :TelField
-      autoload :UrlField
-      autoload :EmailField
-      autoload :NumberField
-      autoload :RangeField
       autoload :TextArea
-      autoload :CheckBox
-      autoload :RadioButton
-      autoload :Select
-      autoload :CollectionSelect
-      autoload :GroupedCollectionSelect
-      autoload :TimeZoneSelect
-      autoload :DateSelect
+      autoload :TextField
       autoload :TimeSelect
-      autoload :DatetimeSelect
+      autoload :TimeZoneSelect
+      autoload :UrlField
     end
   end
 end
diff --git a/actionpack/lib/action_view/helpers/tags/collection_radio_buttons.rb b/actionpack/lib/action_view/helpers/tags/collection_radio_buttons.rb
new file mode 100644
index 0000000000..eea8c41dc0
--- /dev/null
+++ b/actionpack/lib/action_view/helpers/tags/collection_radio_buttons.rb
@@ -0,0 +1,85 @@
+module ActionView
+  module Helpers
+    module Tags
+      class CollectionRadioButtons < CollectionSelect
+        delegate :radio_button, :label, :to => :@template_object
+
+        def render
+          rendered_collection = render_collection(
+            @method_name, @collection, @value_method, @text_method, @options, @html_options
+          ) do |value, text, default_html_options|
+            if block_given?
+              yield sanitize_attribute_name(@method_name, value), text, value, default_html_options
+            else
+              radio_button(@object_name, @method_name, value, default_html_options) +
+                label(@object_name, sanitize_attribute_name(@method_name, value), text, :class => "collection_radio_buttons")
+            end
+          end
+
+          wrap_rendered_collection(rendered_collection, @options)
+        end
+
+        private
+
+        # Generate default options for collection helpers, such as :checked and
+        # :disabled.
+        def default_html_options_for_collection(item, value, options, html_options) #:nodoc:
+          html_options = html_options.dup
+
+          [:checked, :selected, :disabled].each do |option|
+            next unless options[option]
+
+
+            accept = if options[option].respond_to?(:call)
+                       options[option].call(item)
+                     else
+                       Array(options[option]).include?(value)
+                     end
+
+            if accept
+              html_options[option] = true
+            elsif option == :checked
+              html_options[option] = false
+            end
+          end
+
+          html_options
+        end
+
+        def sanitize_attribute_name(attribute, value) #:nodoc:
+          "#{attribute}_#{value.to_s.gsub(/\s/, "_").gsub(/[^-\w]/, "").downcase}"
+        end
+
+        def render_collection(attribute, collection, value_method, text_method, options={}, html_options={}) #:nodoc:
+          item_wrapper_tag   = options.fetch(:item_wrapper_tag, :span)
+          item_wrapper_class = options[:item_wrapper_class]
+
+          collection.map do |item|
+            value = value_for_collection(item, value_method)
+            text  = value_for_collection(item, text_method)
+            default_html_options = default_html_options_for_collection(item, value, options, html_options)
+
+            rendered_item = yield value, text, default_html_options
+
+            item_wrapper_tag ? @template_object.content_tag(item_wrapper_tag, rendered_item, :class => item_wrapper_class) : rendered_item
+          end.join.html_safe
+        end
+
+        def value_for_collection(item, value) #:nodoc:
+          value.respond_to?(:call) ? value.call(item) : item.send(value)
+        end
+
+        def wrap_rendered_collection(collection, options)
+          wrapper_tag = options[:collection_wrapper_tag]
+
+          if wrapper_tag
+            wrapper_class = options[:collection_wrapper_class]
+            @template_object.content_tag(wrapper_tag, collection, :class => wrapper_class)
+          else
+            collection
+          end
+        end
+      end
+    end
+  end
+end
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