Rails - Add default value after rake db:migrate












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I added new migration that add a new column to a table. I ran the command 'rake db:migrate' Then I realize that I forgot to add a default value. How can I add default value after the rake db:migrate? (I'm storing the server on heroku service)










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    1















    I added new migration that add a new column to a table. I ran the command 'rake db:migrate' Then I realize that I forgot to add a default value. How can I add default value after the rake db:migrate? (I'm storing the server on heroku service)










    share|improve this question



























      1












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      1








      I added new migration that add a new column to a table. I ran the command 'rake db:migrate' Then I realize that I forgot to add a default value. How can I add default value after the rake db:migrate? (I'm storing the server on heroku service)










      share|improve this question
















      I added new migration that add a new column to a table. I ran the command 'rake db:migrate' Then I realize that I forgot to add a default value. How can I add default value after the rake db:migrate? (I'm storing the server on heroku service)







      ruby-on-rails postgresql ruby-on-rails-4






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      edited Nov 28 '18 at 10:24









      Cœur

      19k9113155




      19k9113155










      asked Jul 9 '16 at 15:15









      R.BarR.Bar

      1259




      1259
























          2 Answers
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          You can run rake db:rollback, then adjust your migration with default value, commit and push to heroku, and then run db:migrate again.



          Another option is to create a new migration and use change_column_default:



            change_column_default :table_name, :column_name, "Default value"





          share|improve this answer































            2














            Create another migration



            change_column :users, :admin, :boolean, :default => false


            Same question as Add a default value to a column through a migration






            share|improve this answer

























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              2 Answers
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              active

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              2 Answers
              2






              active

              oldest

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              oldest

              votes






              active

              oldest

              votes









              2














              You can run rake db:rollback, then adjust your migration with default value, commit and push to heroku, and then run db:migrate again.



              Another option is to create a new migration and use change_column_default:



                change_column_default :table_name, :column_name, "Default value"





              share|improve this answer




























                2














                You can run rake db:rollback, then adjust your migration with default value, commit and push to heroku, and then run db:migrate again.



                Another option is to create a new migration and use change_column_default:



                  change_column_default :table_name, :column_name, "Default value"





                share|improve this answer


























                  2












                  2








                  2







                  You can run rake db:rollback, then adjust your migration with default value, commit and push to heroku, and then run db:migrate again.



                  Another option is to create a new migration and use change_column_default:



                    change_column_default :table_name, :column_name, "Default value"





                  share|improve this answer













                  You can run rake db:rollback, then adjust your migration with default value, commit and push to heroku, and then run db:migrate again.



                  Another option is to create a new migration and use change_column_default:



                    change_column_default :table_name, :column_name, "Default value"






                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Jul 9 '16 at 15:23







                  user4776684
































                      2














                      Create another migration



                      change_column :users, :admin, :boolean, :default => false


                      Same question as Add a default value to a column through a migration






                      share|improve this answer






























                        2














                        Create another migration



                        change_column :users, :admin, :boolean, :default => false


                        Same question as Add a default value to a column through a migration






                        share|improve this answer




























                          2












                          2








                          2







                          Create another migration



                          change_column :users, :admin, :boolean, :default => false


                          Same question as Add a default value to a column through a migration






                          share|improve this answer















                          Create another migration



                          change_column :users, :admin, :boolean, :default => false


                          Same question as Add a default value to a column through a migration







                          share|improve this answer














                          share|improve this answer



                          share|improve this answer








                          edited May 23 '17 at 11:44









                          Community

                          11




                          11










                          answered Jul 9 '16 at 15:19









                          Steve WilhelmSteve Wilhelm

                          5,20212436




                          5,20212436






























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