class ActionView::MissingTemplate

def initialize(paths, path, details, partial)
  @path = path
  display_paths = paths.compact.map{ |p| p.to_s.inspect }.join(", ")
  template_type = if partial
    "partial"
  elsif path =~ /layouts/i
    'layout'
  else
    'template'
  end
  super("Missing #{template_type} #{path} with #{details.inspect} in view paths #{display_paths}")
end