It works very well. Thanks! On Friday, December 14, 2012 at 5:52 AM, Michael Bayer wrote:
> tricky, perhaps try setting the column to the expression > "sqlalchemy.sql.null()" for now. A None does indicate "fire the default". > > On Thursday, December 13, 2012 12:41:38 PM UTC-5, Hong Minhee wrote: > > Hi, > > > > I have a model class which contains a nullable DateTime column, and its > > default value is now(). Its value is None immediately after it’s > > instantiated with Model(col=None), but it becomes filled to the current > > time after the session gets flushed. (Note: I’m using > > sqlalchemy.ext.declarative with its default constructor.) Does default > > value mean just alternative value to None? > > > > I want to make the column to be set to the current time by default, but > > still possible to be explicitly set to None if needed. Is there any way to > > achieve this? > > > > > > Thanks, > > Hong Minhee > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/sqlalchemy/-/LO99H_UrY1wJ. > To post to this group, send email to sqlalchemy@googlegroups.com > (mailto:sqlalchemy@googlegroups.com). > To unsubscribe from this group, send email to > sqlalchemy+unsubscr...@googlegroups.com > (mailto:sqlalchemy+unsubscr...@googlegroups.com). > For more options, visit this group at > http://groups.google.com/group/sqlalchemy?hl=en. -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
