Method: ActiveRecord::Acts::Versioned::Behaviors::ClassMethods#create_versioned_table

Defined in:
lib/acts_as_versioned/lib/acts_as_versioned.rb

#create_versioned_table(create_table_options = {}) ⇒ Object

Rake migration task to create the versioned table using options passed to acts_as_versioned



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# File 'lib/acts_as_versioned/lib/acts_as_versioned.rb', line 415

def create_versioned_table(create_table_options = {})
  # create version column in main table if it does not exist
  if !self.content_columns.find { |c| [version_column.to_s, 'lock_version'].include? c.name }
    self.connection.add_column table_name, version_column, :integer
    self.reset_column_information
  end

  return if connection.table_exists?(versioned_table_name)

  self.connection.create_table(versioned_table_name, create_table_options) do |t|
    t.column versioned_foreign_key, :integer
    t.column version_column, :integer
  end

  self.versioned_columns.each do |col|
    self.connection.add_column versioned_table_name, col.name, col.type,
                               :limit     => col.limit,
                               :default   => col.default,
                               :scale     => col.scale,
                               :precision => col.precision
  end

  if type_col = self.columns_hash[inheritance_column]
    self.connection.add_column versioned_table_name, versioned_inheritance_column, type_col.type,
                               :limit     => type_col.limit,
                               :default   => type_col.default,
                               :scale     => type_col.scale,
                               :precision => type_col.precision
  end

  self.connection.add_index versioned_table_name, versioned_foreign_key
end