method
    
    prefetch_primary_key?
 
  prefetch_primary_key?(table_name = nil)
  public
  Should primary key values be selected from their corresponding sequence before the insert statement? If true, next_sequence_value is called before each insert to set the record’s primary key.

 RSpec
RSpec Ruby on Rails
Ruby on Rails Ruby
Ruby 
   
   
    
     
    
    
     
  