+++ /dev/null
-module ActiveRecord
- # Allows programmers to programmatically define a schema in a portable
- # DSL. This means you can define tables, indexes, etc. without using SQL
- # directly, so your applications can more easily support multiple
- # databases.
- #
- # Usage:
- #
- # ActiveRecord::Schema.define do
- # create_table :authors do |t|
- # t.string :name, :null => false
- # end
- #
- # add_index :authors, :name, :unique
- #
- # create_table :posts do |t|
- # t.integer :author_id, :null => false
- # t.string :subject
- # t.text :body
- # t.boolean :private, :default => false
- # end
- #
- # add_index :posts, :author_id
- # end
- #
- # ActiveRecord::Schema is only supported by database adapters that also
- # support migrations, the two features being very similar.
- class Schema < Migration
- private_class_method :new
-
- # Eval the given block. All methods available to the current connection
- # adapter are available within the block, so you can easily use the
- # database definition DSL to build up your schema (+create_table+,
- # +add_index+, etc.).
- #
- # The +info+ hash is optional, and if given is used to define metadata
- # about the current schema (currently, only the schema's version):
- #
- # ActiveRecord::Schema.define(:version => 20380119000001) do
- # ...
- # end
- def self.define(info={}, &block)
- instance_eval(&block)
-
- unless info[:version].blank?
- initialize_schema_migrations_table
- assume_migrated_upto_version info[:version]
- end
- end
- end
-end