46 lines
1.2 KiB
Ruby
46 lines
1.2 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require_relative '../../migration_helpers'
|
|
|
|
module RuboCop
|
|
module Cop
|
|
module Migration
|
|
# Cop that prevents adding columns to wide tables.
|
|
class AddColumnsToWideTables < RuboCop::Cop::Base
|
|
include MigrationHelpers
|
|
|
|
MSG = '`%s` is a wide table with several columns, adding more should be avoided unless absolutely necessary.' \
|
|
' Consider storing the column in a different table or creating a new one.'
|
|
|
|
BLACKLISTED_METHODS = %i[
|
|
add_column
|
|
add_reference
|
|
add_timestamps_with_timezone
|
|
].freeze
|
|
|
|
def on_send(node)
|
|
return unless in_migration?(node)
|
|
|
|
method_name = node.children[1]
|
|
table_name = node.children[2]
|
|
|
|
return unless offense?(method_name, table_name)
|
|
|
|
add_offense(node.loc.selector, message: format(MSG, table_name.value))
|
|
end
|
|
|
|
private
|
|
|
|
def offense?(method_name, table_name)
|
|
wide_table?(table_name) &&
|
|
BLACKLISTED_METHODS.include?(method_name)
|
|
end
|
|
|
|
def wide_table?(table_name)
|
|
table_name && table_name.type == :sym &&
|
|
WIDE_TABLES.include?(table_name.value)
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|