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-rw-r--r--actionview/lib/action_view/rendering.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/actionview/lib/action_view/rendering.rb b/actionview/lib/action_view/rendering.rb
index ac861c44d4..5a06bd9da6 100644
--- a/actionview/lib/action_view/rendering.rb
+++ b/actionview/lib/action_view/rendering.rb
@@ -127,7 +127,7 @@ module ActionView
# Assign the rendered format to look up context.
def _process_format(format)
super
- lookup_context.formats = [format.to_sym]
+ lookup_context.formats = [format.to_sym] if format.to_sym
end
# Normalize args by converting render "foo" to render :action => "foo" and