How do I render a partial of a different format in Rails?

Question

I\'m trying to generate a JSON response that includes some HTML. Thus, I have /app/views/foo/bar.json.erb:

{
  someKey: \'some value\',
  someH         


        

Answer 1

Beginning with Rails 3.2.3, when calling render :partial (only works outside of the respond_to block).

render formats: [ :html ]

instead of

render format: 'html'