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-rwxr-xr-xactionpack/lib/action_controller/base.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/actionpack/lib/action_controller/base.rb b/actionpack/lib/action_controller/base.rb
index 9a3ab651ac..4630103119 100755
--- a/actionpack/lib/action_controller/base.rb
+++ b/actionpack/lib/action_controller/base.rb
@@ -826,6 +826,7 @@ module ActionController #:nodoc:
render_for_text(xml.respond_to?(:to_xml) ? xml.to_xml : xml, options[:status])
elsif json = options[:json]
+ json = json.to_json unless json.is_a?(String)
json = "#{options[:callback]}(#{json})" unless options[:callback].blank?
response.content_type = Mime::JSON
render_for_text(json, options[:status])