Find dependencies that need to be bumped for a Rails upgrade: check_rails_dependancies.rb -v 6.1.0

check_rails_dependencies.rb

#!/usr/bin/env ruby
require 'bundler/setup'
require 'optparse'
require 'rainbow'
require 'set'

class RailsBumpHelper
  RAILS_DEPENDENCIES = ["actioncable", "actionmailbox", "actionmailer", "actionpack", "actiontext", "actionview", "activejob", "activemodel", "activerecord", "activestorage", "activesupport", "railties", "rails"]

  def initialize(verbose: false, version:)
    @target_version = ::Gem::Version.create(version)
    @verbose = verbose
    @gems_using_rails = Set.new
    @application_dependencies = Bundler.locked_gems.dependencies
  end

  def run!
    @gems_using_rails = Set.new
    application_dependencies.each do |name, dependency|
      puts "Gem: #{name}" if verbose?
      dependency.to_spec.traverse do |current_spec, dep, dep_spec, trail|
        # If this gem uses something that's part of rails then add it (and its parents) to the list
        puts "Tree: #{trail.map(&:name)}" if verbose?
        if dep_spec.runtime_dependencies.map(&:name).any? { |dep_name| part_of_rails?(dep_name) }
          trail.each { |d| gems_using_rails << d unless part_of_rails?(d.name) }
        end
      end
    end
    self
  end

  def what_needs_upgrading?
    gems_with_runtime_rails_dependencies = {}

    gems_using_rails.sort.each do |gem|
      rails_deps = gem.runtime_dependencies.select { |dep| part_of_rails?(dep.name) }
      gems_with_runtime_rails_dependencies[gem] = rails_deps if rails_deps.any?
    end

    puts "-"*30
    puts "#{gems_with_runtime_rails_dependencies.size} dependencies using Rails"
    puts "-"*30

    gems_with_runtime_rails_dependencies.each do |gem, rails_deps|
      puts Rainbow("#{gem.name} v#{gem.version}").white.bold
      rails_deps.each do |dep|
        if dep.requirement.satisfied_by?(target_version)
          puts Rainbow("\t\u2713 #{dep.name}").green
        else
          puts Rainbow("\t\u2717 #{dep.name}").red
        end
      end
    end
  end

  private

  attr_reader :application_dependencies, :gems_using_rails, :target_version

  def part_of_rails?(name)
    RAILS_DEPENDENCIES.include?(name)
  end

  def verbose?
    @verbose
  end
end
options = {}
OptionParser.new do |opts|
  opts.banner = "Usage: check_all_dependencies.rb [options]"

  opts.on("--verbose", "Run verbosely") do |v|
    options[:verbose] = v
  end

  opts.on("-v", "--version [VERSION]", "Verify dependencies satisfy given Rails version") do |version|
    options[:version] = version
  end
end.parse!

RailsBumpHelper.new(options).run!.what_needs_upgrading?

Rails dependency finder

# Example usage
$ ./check_rails_dependencies.rb --version 6.1.0
------------------------------
93 dependencies using Rails
------------------------------
action_mailer-logged_smtp_delivery v2.1.0
    ✗ actionmailer
actionpack-action_caching v1.2.0
    ✓ actionpack
    ✓ activerecord
actionpack-page_caching v1.1.0
    ✓ actionpack
actionpack-xml_parser v1.0.2
    ✗ actionpack
active_hash v1.5.2
    ✓ activesupport
active_model_serializers v0.9.3
    ✓ activemodel
    ✓ rails
active_record-comments v0.1.3
    ✓ activerecord
active_record_host_pool v0.10.1
    ✗ activerecord
active_record_inherit_assoc v2.5.0
    ✗ activerecord
    ✓ rails
active_record_shards v3.14.0
    ✓ activerecord
    ✓ activesupport
activerecord-delay_touching v1.0.1
    ✓ activerecord
activeresource v4.0.0
    ✗ activesupport
    ✗ activemodel
...