I'm trying to generate a JSON response that includes some HTML. Thus, I have /app/views/foo/bar.json.erb:
{
someKey: 'some value',
someHTML: "<%= h render(:partial => '/foo/baz') -%>"
}
I want it to render /app/views/foo/_baz.html.erb, but it will only render /app/views/foo/_baz.json.erb. Passing :format => 'html' doesn't help.
In Rails 3, the View has a formats array, which means you can set it to look for [:mobile, :html]. Setting that will default to looking for :mobile templates, but fall back to :html templates. The effects of setting this will cascade down into inner partials.
The best, but still flawed way, that I could find to set this was to put this line at the top of each full mobile template (but not partials).
<% self.formats = [:mobile, :html] %>
The flaw is that you have to add that line to multiple templates. If anyone knows a way to set this once, from application_controller.rb, I'd love to know it. Unfortunately, it doesn't work to add that line to your mobile layout, because the templates are rendered before the layout.
Just elaborating on what zgchurch wrote:
Thought it might be useful.
def with_format(format)
old_formats = formats
self.formats = [format]
yield
ensure
self.formats = old_formats
end