class ActiveRecord::ConnectionAdapters::Table

def column(column_name, type, options = {})

t.column(:name, :string)
====== Creating a simple column
===== Example
See TableDefinition#column for details of the options you can use.
Adds a new column to the named table. 
def column(column_name, type, options = {})
  @base.add_column(@table_name, column_name, type, options)
end