You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: 20171209004800_add_content_filter_caches.rb
    path of file: ./repos/mushroom-observer/db/migrate
    
    the code of the file until where you have to start completion: class AddContentFilterCaches < ActiveRecord::Migration
  def up
    add_column :observations, :lifeform, :string, limit: 1024
    add_column :observations, :text_name, :string, limit: 100
    add_column :observations, :classification, :text

    Name.connection.execute(%(
      UPDATE observations o, names n
      SET o.lifeform = n.lifeform,
          o.text_name = n.te
    
  def up
    add_column :observations, :lifeform, :string, limit: 1024
    add_column :observations, :text_name, :string, limit: 100
    add_column :observations, :classification, :text

    Name.connection.execute(%(
      UPDATE observations o, names n
      SET o.lifeform = n.lifeform,
          o.text_name = n.text_name,
          o.classification = n.classification
      WHERE o.name_id = n.id
    ))

    Name.connection.execute(%(
      UPDATE observations o, locations l
      SET o.where = l.name
      WHERE o.location_id = l.id
    ))
  end