tests mostly pass

adjust to work with instance-based migations
migrated_at can't be null
why must people have last names? it's killing me!

activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb

@@ -464,7 +464,7 @@ module ActiveRecord
         end
 
         unless migrated.include?(version)
-          execute "INSERT INTO #{sm_table} (version) VALUES ('#{version}')"
+          execute "INSERT INTO #{sm_table} (version,migrated_at) VALUES ('#{version}','#{Time.now.to_s(:db)}')"
         end
 
         inserted = Set.new
@@ -472,7 +472,7 @@ module ActiveRecord
           if inserted.include?(v)
             raise "Duplicate migration #{v}. Please renumber your migrations to resolve the conflict."
           elsif v < version
-            execute "INSERT INTO #{sm_table} (version) VALUES ('#{v}')"
+            execute "INSERT INTO #{sm_table} (version,migrated_at) VALUES ('#{v}','#{Time.now.to_s(:db)}')"
             inserted << v
           end
         end

activerecord/lib/active_record/schema.rb

@@ -55,7 +55,7 @@ module ActiveRecord
       assume_migrated_upto_version(info[:version], schema.migrations_path) unless info[:version].blank?
     end
 
-    def self.migration(version, name="", options={})
+    def migration(version, name="", options={})
       name, options = "", name if name.is_a?(Hash)
 
       table = Arel::Table.new(ActiveRecord::Migrator.schema_migrations_table_name)

activerecord/test/cases/ar_schema_test.rb

@@ -47,8 +47,9 @@ if ActiveRecord::Base.connection.supports_migrations?
     end
 
     def test_migration_adds_row_to_migrations_table
-      ActiveRecord::Schema.migration("123001")
-      ActiveRecord::Schema.migration("123002", "add_magic_power_to_unicorns")
+      schema = ActiveRecord::Schema.new
+      schema.migration("123001")
+      schema.migration("123002", "add_magic_power_to_unicorns")
       rows = @connection.select_all("SELECT * FROM #{@connection.quote_table_name(@sm_table)}")
       assert_equal 2, rows.length