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require 'active_record/scoping/default'
require 'active_record/scoping/named'
require 'active_record/base'
module ActiveRecord
class SchemaMigration < ActiveRecord::Base
def self.table_name
"#{Base.table_name_prefix}schema_migrations#{Base.table_name_suffix}"
end
def self.index_name
"#{Base.table_name_prefix}unique_schema_migrations#{Base.table_name_suffix}"
end
def self.create_table(limit=nil)
unless connection.table_exists?(table_name)
version_options = {null: false}
version_options[:limit] = limit if limit
connection.create_table(table_name, id: false) do |t|
t.column :version, :string, version_options
end
connection.add_index table_name, :version, unique: true, name: index_name
end
end
def self.drop_table
if connection.table_exists?(table_name)
connection.remove_index table_name, name: index_name
connection.drop_table(table_name)
end
end
def version
super.to_i
end
end
end
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