Methods
U
Instance Public methods
use_renderer(*args)
use_renderers(*args)
Also aliased as: use_renderer

Source: show 

# File actionpack/lib/action_controller/metal/renderers.rb, line 19
def use_renderers(*args)
  new = _renderers.dup
  args.each do |key|
    new[key] = RENDERERS[key]
  end
  self._renderers = new.freeze
end