On 12/8/06, Brad Ediger <[EMAIL PROTECTED]> wrote: > On Dec 8, 2006, at 12:34 PM, Francois Beausoleil wrote: > > 2006/12/8, Michael Schuerig <[EMAIL PROTECTED]>: > >> If I understand your suggestion correctly, it amounts to sorting and > >> applying migrations based on timestamp. I think real time is not the > >> right dimension for this as progress on different branches is not > >> coordinated by time. Rather, I suggest to apply migrations in the > >> order > >> of their corresponding revision numbers. This approach doesn't > >> guarantee that there can be no conflicts when branches are merged, > >> but > >> I think this can't be guaranteed anyway. > > > > You are right, Michael. Sort by time, then apply. So, you suggest > > that we use the revision number instead ? This would tie Rails to one > > or more SCM. Is that advisable ? > > > > Maybe we should sort by time the migration was committed ? But then > > again, we tie Rails AR to SCM. > > > > This is a hard problem. > > The basic problem is endemic to SCM anyways. If SCM is not being > used, there is generally no need for this fix. In my mind, there's > nothing wrong with saying "if you use version control, Rails handles > migration merging for you, but only if you use SVN". Nobody is worse > off under that arrangement than they are now.
You think that tying rails features to specific dependencies of SCM is a good thing? I don't believe this is a hard problem. The timestamp to me feels like "too much", and also, using SCM revisions doesn't necessarily work, particularly where there are a few branches, or where you're using (as what inspired this) something like SVK. The main issue here is, how do you keep track of multiple branches of migrations per DB instance, particularly migrations added in the past. I had thought about storing the migrations which have been run in the schema table, and decided that it was also "too much", however, it could be a good way to maintain the simplicity of numbering with dependencies. We already have the table of schema_info.. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Core" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/rubyonrails-core?hl=en -~----------~----~----~----~------~----~------~--~---
