Detect invalid activerecord models in your app

model_cleanup.rb

# Disable logging
ActiveRecord::Base.logger = Logger.new(nil)

# Make sure all models are loaded
Dir.glob("app/models/*.rb").each do |f|
  begin
    require File.basename(f).sub(".rb", "")
  rescue
    puts "could not require #{f}"
  end
end

# It's a good idea to review this list and remove models that does not need to be checked for validation errors. Especially if you have a couple of huge tables.
# subjects = ActiveRecord::Base.descendants.select {|c| c.superclass == ActiveRecord::Base}
subjects = []
data = Hash.new() { [] }

subjects.each do |klass|
  klass.find_each do |p|
    data[klass] << p.id unless p.valid?
  end

  print "#{klass.name.ljust(28)} #{data[klass].size}/#{klass.count}"
  print " (#{data[klass].join(",")})" if data[klass].size > 0
  puts
end;nil