Add timestamps to an existing table

Question

I need to add timestamps (created_at & updated_at) to an existing table. I tried the following code but it didn\'t work.

class          


        

Answer 1

I personally used the following, and it updated all previous records with the current time/date:

add_column :, :created_at, :datetime, default: Time.zone.now, null: false
add_column :, :updated_at, :datetime, default: Time.zone.now, null: false

                                                        

              
                
                0
              
                   
                
               讨论(0)
              
                                                  
              
              

                          
             
       
          
              
                                       

     查看其它21个回答


            

                    



               
            

    发布评论:
    

         
                        
    
    
提交评论 
  
  

                    
                    

                    

                        

                        
                         加载中...
                        
                    
                

          

            
            

              
              

            
    


                                 
              
            
                          
    

        
         

                验证码
                

                  
                
                

                   看不清?
                
              
                                  

                    
   
                 
             
              
提交回复
            
          
        

          
 
     
 

        
热议问题