Class: RuboCop::Cop::Rails::HttpPositionalArguments

Inherits:
RuboCop::Cop
  • Object
show all
Extended by:
TargetRailsVersion
Defined in:
lib/rubocop/cop/rails/http_positional_arguments.rb

Overview

This cop is used to identify usages of http methods like ‘get`, `post`, `put`, `patch` without the usage of keyword arguments in your tests and change them to use keyword args. This cop only applies to Rails >= 5. If you are running Rails < 5 you should disable the Rails/HttpPositionalArguments cop or set your TargetRailsVersion in your .rubocop.yml file to 4.2.

Examples:

# bad
get :new, { user_id: 1}

# good
get :new, params: { user_id: 1 }

Constant Summary collapse

MSG = 
'Use keyword arguments instead of ' \
'positional arguments for http call: `%<verb>s`.'
KEYWORD_ARGS = 
%i[
  method params session body flash xhr as headers env to
].freeze
HTTP_METHODS = 
%i[get post put patch delete head].freeze

Instance Method Summary collapse

Methods included from TargetRailsVersion

minimum_target_rails_version, support_target_rails_version?

Instance Method Details

#autocorrect(node) ⇒ Object

given a pre Rails 5 method: get :new, @user.id, {}

the result should look like:

get :new, params: { user_id: @user.id }, session: {}

the http_method is the method used to call the controller the controller node can be a symbol, method, object or string that represents the path/action on the Rails controller the data is the http parameters and environment sent in the Rails 5 http call

Returns:

  • lambda of auto correct procedure



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# File 'lib/rubocop/cop/rails/http_positional_arguments.rb', line 54

def autocorrect(node)
  lambda do |corrector|
    corrector.replace(node.loc.expression, correction(node))
  end
end

#on_send(node) ⇒ Object 



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# File 'lib/rubocop/cop/rails/http_positional_arguments.rb', line 35

def on_send(node)
  http_request?(node) do |data|
    return unless needs_conversion?(data)

    add_offense(node, location: :selector,
                      message: format(MSG, verb: node.method_name))
  end
end