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-rw-r--r--actionpack/lib/action_view/helpers/record_tag_helper.rb56
1 files changed, 51 insertions, 5 deletions
diff --git a/actionpack/lib/action_view/helpers/record_tag_helper.rb b/actionpack/lib/action_view/helpers/record_tag_helper.rb
index 142a25f118..ad8896a2fd 100644
--- a/actionpack/lib/action_view/helpers/record_tag_helper.rb
+++ b/actionpack/lib/action_view/helpers/record_tag_helper.rb
@@ -17,6 +17,19 @@ module ActionView
#
# <div id="person_123" class="person foo"> Joe Bloggs </div>
#
+ # You can also pass an array of Active Record objects, which will then
+ # get iterates over and yield each record as an argument for the block.
+ # For example:
+ #
+ # <%= div_for(@people, :class => "foo") do |person| %>
+ # <%= person.name %>
+ # <% end %>
+ #
+ # produces:
+ #
+ # <div id="person_123" class="person foo"> Joe Bloggs </div>
+ # <div id="person_124" class="person foo"> Jane Bloggs </div>
+ #
def div_for(record, *args, &block)
content_tag_for(:div, record, *args, &block)
end
@@ -42,6 +55,21 @@ module ActionView
#
# <tr id="foo_person_123" class="person">...
#
+ # You can also pass an array of objects which this method will loop through
+ # and yield the current object to the supplied block, reduce the need for
+ # having to iterate through the object (using <tt>each</tt>) beforehand.
+ # For example (assuming @people is an array of Person objects):
+ #
+ # <%= content_tag_for(:tr, @people) do |person| %>
+ # <td><%= person.first_name %></td>
+ # <td><%= person.last_name %></td>
+ # <% end %>
+ #
+ # produces:
+ #
+ # <tr id="person_123" class="person">...</tr>
+ # <tr id="person_124" class="person">...</tr>
+ #
# content_tag_for also accepts a hash of options, which will be converted to
# additional HTML attributes. If you specify a <tt>:class</tt> value, it will be combined
# with the default class name for your object. For example:
@@ -52,12 +80,30 @@ module ActionView
#
# <li id="person_123" class="person bar">...
#
- def content_tag_for(tag_name, record, prefix = nil, options = nil, &block)
- options, prefix = prefix, nil if prefix.is_a?(Hash)
- options ||= {}
- options.merge!({ :class => "#{dom_class(record, prefix)} #{options[:class]}".strip, :id => dom_id(record, prefix) })
- content_tag(tag_name, options, &block)
+ def content_tag_for(tag_name, single_or_multiple_records, prefix = nil, options = nil, &block)
+ if single_or_multiple_records.respond_to?(:to_ary)
+ single_or_multiple_records.to_ary.map do |single_record|
+ capture { content_tag_for_single_record(tag_name, single_record, prefix, options, &block) }
+ end.join("\n")
+ else
+ content_tag_for_single_record(tag_name, single_or_multiple_records, prefix, options, &block)
+ end
end
+
+ private
+
+ # Called by <tt>content_tag_for</tt> internally to render a content tag
+ # for each record.
+ def content_tag_for_single_record(tag_name, record, prefix, options, &block)
+ options, prefix = prefix, nil if prefix.is_a?(Hash)
+ options ||= {}
+ options.merge!({ :class => "#{dom_class(record, prefix)} #{options[:class]}".strip, :id => dom_id(record, prefix) })
+ if block.arity == 0
+ content_tag(tag_name, capture(&block), options)
+ else
+ content_tag(tag_name, capture(record, &block), options)
+ end
+ end
end
end
end