Class: RuboCop::Cop::Rails::UnusedRenderContent

Inherits:
Base
  • Object
show all
Includes:
RangeHelp
Defined in:
lib/rubocop/cop/rails/unused_render_content.rb

Overview

If you try to render content along with a non-content status code (100-199, 204, 205, or 304), it will be dropped from the response.

This cop checks for uses of ‘render` which specify both body content and a non-content status.

Examples:

# bad
render 'foo', status: :continue
render status: 100, plain: 'Ruby!'

# good
head :continue
head 100

Constant Summary collapse

MSG = 
'Do not specify body content for a response with a non-content status code'
RESTRICT_ON_SEND = 
%i[render].freeze
NON_CONTENT_STATUS_CODES = 
Set[*100..199, 204, 205, 304] & ::Rack::Utils::SYMBOL_TO_STATUS_CODE.values
NON_CONTENT_STATUSES = 
Set[
  *::Rack::Utils::SYMBOL_TO_STATUS_CODE.invert.fetch_values(*NON_CONTENT_STATUS_CODES)
]
BODY_OPTIONS = 
Set[
  :action,
  :body,
  :content_type,
  :file,
  :html,
  :inline,
  :json,
  :js,
  :layout,
  :plain,
  :raw,
  :template,
  :text,
  :xml
]

Instance Method Summary collapse

Instance Method Details

#on_send(node) ⇒ Object 



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# File 'lib/rubocop/cop/rails/unused_render_content.rb', line 59

def on_send(node)
  unused_render_content?(node) do |unused_content_node|
    add_offense(unused_content_node)
  end
end