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-rw-r--r--actionpack/lib/action_controller/layout.rb4
1 files changed, 3 insertions, 1 deletions
diff --git a/actionpack/lib/action_controller/layout.rb b/actionpack/lib/action_controller/layout.rb
index 0c1513c9a1..f12b3f9b80 100644
--- a/actionpack/lib/action_controller/layout.rb
+++ b/actionpack/lib/action_controller/layout.rb
@@ -234,7 +234,9 @@ module ActionController #:nodoc:
protected
def render_with_a_layout(options = nil, &block) #:nodoc:
- template_with_options = options.is_a?(Hash)
+ if template_with_options = options.is_a?(Hash)
+ response.template.template_format = options[:content_type].to_sym if options[:content_type]
+ end
if apply_layout?(template_with_options, options) && (layout = pick_layout(template_with_options, options))
assert_existence_of_template_file(layout)