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Versions: 46
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Contents
# frozen_string_literal: true
require "rubocop"
module RuboCop
module Cop
module AnyCable
# Checks for instance variable usage inside subscriptions.
#
# @example
# # bad
# class MyChannel < ApplicationCable::Channel
# def subscribed
# @post = Post.find(params[:id])
# stream_from @post
# end
# end
#
# # good
# class MyChannel < ApplicationCable::Channel
# def subscribed
# post = Post.find(params[:id])
# stream_from post
# end
# end
#
class InstanceVars < RuboCop::Cop::Cop
MSG = "Channel instance variables are not supported in AnyCable. Use `state_attr_accessor` instead"
def on_class(node)
find_nested_ivars(node) do |nested_ivar|
add_offense(nested_ivar)
end
end
private
def find_nested_ivars(node, &block)
node.each_child_node do |child|
if child.ivasgn_type? || child.ivar_type?
yield(child)
elsif child.children.any?
find_nested_ivars(child, &block)
end
end
end
end
end
end
end
Version data entries
46 entries across 46 versions & 2 rubygems