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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Rails
# Makes sure that each migration file defines a migration class
# whose name matches the file name.
# (e.g. `20220224111111_create_users.rb` should define `CreateUsers` class.)
#
# @example
# # db/migrate/20220224111111_create_users.rb
#
# # bad
# class SellBooks < ActiveRecord::Migration[7.0]
# end
#
# # good
# class CreateUsers < ActiveRecord::Migration[7.0]
# end
#
class MigrationClassName < Base
extend AutoCorrector
include MigrationsHelper
MSG = 'Replace with `%<camelized_basename>s` that matches the file name.'
def on_class(node)
return unless migration_class?(node)
basename = basename_without_timestamp_and_suffix(processed_source.file_path)
class_identifier = node.identifier.location.name
camelized_basename = camelize(basename)
return if class_identifier.source.casecmp(camelized_basename).zero?
message = format(MSG, camelized_basename: camelized_basename)
add_offense(class_identifier, message: message) do |corrector|
corrector.replace(class_identifier, camelized_basename)
end
end
private
def basename_without_timestamp_and_suffix(filepath)
basename = File.basename(filepath, '.rb')
basename = remove_gem_suffix(basename)
basename.sub(/\A\d+_/, '')
end
# e.g.: from `add_blobs.active_storage` to `add_blobs`.
def remove_gem_suffix(file_name)
file_name.sub(/\..+\z/, '')
end
def camelize(word)
word.split('_').map(&:capitalize).join
end
end
end
end
end
Version data entries
33 entries across 32 versions & 6 rubygems