method
    
    add_timestamps
 
  add_timestamps(table_name, options = {})
  public
  Adds timestamps (created_at and updated_at) columns to table_name. Additional options (like null: false) are forwarded to #add_column.
add_timestamps(:suppliers, null: false)

 RSpec
RSpec Ruby on Rails
Ruby on Rails Ruby
Ruby 
   
   
   
    
     
   
    
    
 
   
  