You have two options for rolling back (reverting) a changeset in Team Foundation Server 2010 Version Control. First option is using the User Interface (if you have the latest version of the TFS 2010 Power Tools installed). The other option is using the TFS 2010 version control command-line application: tf.exe rollback I have information about … Read more
Query ChangeTracker of DbContext for dirty items. Set deleted items state to unchanged and added items to detached. For modified items, use original values and set current values of the entry. Finally set state of modified entry to unchanged: public void RollBack() { var context = DataContextFactory.GetDataContext(); var changedEntries = context.ChangeTracker.Entries() .Where(x => x.State != … Read more
You can update to an older revision: svn update -r 666 file Or you can just view the file directly: svn cat -r 666 file | less
Note: You CANNOT UNDO this. Try git checkout -f this will discard any local changes which are not committed in ALL branches and master.
You have 2 options: You can take the Down from the bad migration and put it in a new migration (you will also need to make the subsequent changes to the model). This is effectively rolling up to a better version. I use this option on things that have gone to multiple environments. The other … Read more
You won’t always be able to simply generate the migration to already have the code you want. You can create an empty migration and then populate it with the code you need. You can find information about how to accomplish different tasks in a migration here: http://api.rubyonrails.org/classes/ActiveRecord/Migration.html More specifically, you can see how to drop … Read more
rake db:rollback STEP=1 Is a way to do this, if the migration you want to rollback is the last one applied. You can substitute 1 for however many migrations you want to go back. For example: rake db:rollback STEP=5 Will also rollback all the migration that happened later (4, 3, 2 and also 1). To … Read more