From 6c062054cdb236fead5d09679985ebb70d8b053a Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@loudthinking.com>
Date: Mon, 23 Oct 2006 22:57:59 +0000
Subject: Added block-usage to TagHelper#content_tag [DHH]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5344 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
---
 actionpack/lib/action_view/helpers/tag_helper.rb | 28 ++++++++++++++++++++----
 1 file changed, 24 insertions(+), 4 deletions(-)

(limited to 'actionpack/lib')

diff --git a/actionpack/lib/action_view/helpers/tag_helper.rb b/actionpack/lib/action_view/helpers/tag_helper.rb
index f913c99abb..8b8c7b491c 100644
--- a/actionpack/lib/action_view/helpers/tag_helper.rb
+++ b/actionpack/lib/action_view/helpers/tag_helper.rb
@@ -15,11 +15,26 @@ module ActionView
       end
 
       # Examples:
-      # * <tt>content_tag("p", "Hello world!") => <p>Hello world!</p></tt>
-      # * <tt>content_tag("div", content_tag("p", "Hello world!"), "class" => "strong") => </tt>
+      # * <tt>content_tag(:p, "Hello world!") => <p>Hello world!</p></tt>
+      # * <tt>content_tag(:div, content_tag(:p, "Hello world!"), :class => "strong") => </tt>
       #   <tt><div class="strong"><p>Hello world!</p></div></tt>
-      def content_tag(name, content, options = nil)
-        "<#{name}#{tag_options(options.stringify_keys) if options}>#{content}</#{name}>"
+      #
+      # ERb example:
+      #  <% content_tag :div, :class => "strong" %>
+      #    Hello world!
+      #  <% end %>
+      #
+      # Will output:
+      #   <div class="strong"><p>Hello world!</p></div>
+      def content_tag(name, content_or_options_with_block = nil, options = nil, &block)
+        if block_given?
+          options = content_or_options_with_block if content_or_options_with_block.is_a?(Hash)
+          content = capture(&block)
+          concat(content_tag_string(name, content, options), block.binding)
+        else
+          content = content_or_options_with_block
+          content_tag_string(name, content, options)
+        end
       end
 
       # Returns a CDATA section for the given +content+.  CDATA sections
@@ -41,6 +56,11 @@ module ActionView
       end
 
       private
+        def content_tag_string(name, content, options)
+          tag_options = options ? tag_options(options.stringify_keys) : ""
+          "<#{name}#{tag_options}>#{content}</#{name}>"
+        end
+      
         def tag_options(options)
           cleaned_options = convert_booleans(options.stringify_keys.reject {|key, value| value.nil?})
           ' ' + cleaned_options.map {|key, value| %(#{key}="#{escape_once(value)}")}.sort * ' ' unless cleaned_options.empty?
-- 
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