# File lib/active_record/model_schema.rb, line 297 def reset_column_information connection.clear_cache! undefine_attribute_methods connection.schema_cache.clear_table_cache!(table_name) if table_exists? @column_names = @content_columns = @column_defaults = @columns = @columns_hash = nil @dynamic_methods_hash = @inheritance_column = nil @arel_engine = @relation = nil end