Method: ActiveRecord::ModelSchema::ClassMethods#reset_column_information

Defined in:

lib/active_record/model_schema.rb

#reset_column_information ⇒ Object

Resets all the cached information about columns, which will cause them to be reloaded on the next request.

The most common usage pattern for this method is probably in a migration, when just after creating a table you want to populate it with some default values, e.g.:

class CreateJobLevels < ActiveRecord::Migration[8.1]
  def up
    create_table :job_levels do |t|
      t.integer :id
      t.string :name

      t.timestamps
    end

    JobLevel.reset_column_information
    %w{assistant executive manager director}.each do |type|
      JobLevel.create(name: type)
    end
  end

  def down
    drop_table :job_levels
  end
end

# File 'lib/active_record/model_schema.rb', line 539

def reset_column_information
  connection_pool.active_connection&.clear_cache!
  ([self] + descendants).each(&:undefine_attribute_methods)
  schema_cache.clear_data_source_cache!(table_name)

  reload_schema_from_cache
  initialize_find_by_cache
end