Dan, does the same thing happen if I call create(attributes)? I'd like to avoid having to use two lines of code where one will do. I had set up the db constraint but not the validation. Didn't think it mattered. I will go ahead and do that.
On Sat, Feb 27, 2010 at 11:21 AM, Dan Kubb (dkubb) <dan.k...@gmail.com> wrote: > Dirkjan, > >> Doesn't this work like you want: >> >> o = SomeObject.new(:attribute => 'value') >> o.save >> >> Resource#save returns true or false here, but you're of course welcome >> to ignore that return value. > > Yeah, that's what I was getting at. This only works if you have > uniqueness validation turned on. If there's no DB constraint, and dm- > validations is off, you'll get an explosion. With no DB constraint > *or* validations, it'll just insert a new record. With uniqueness > constraints turned on DM will not perform the insert at all, because > it'll see the record already exists, and it will return false; which > you are free to ignore. > > However, based on the StackOverflow thread it appears as if Carl found > a work-around using #first_or_create. I forgot to recommend this > because I got caught up on the requirement "silently fail if a record > with the same name already exists", which to me implied that he wanted > to save the record and have the operation be a no-op if the record > already exists. > > -- > > Dan > (dkubb) > > -- > You received this message because you are subscribed to the Google Groups > "DataMapper" group. > To post to this group, send email to datamap...@googlegroups.com. > To unsubscribe from this group, send email to > datamapper+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/datamapper?hl=en. > > -- You received this message because you are subscribed to the Google Groups "DataMapper" group. To post to this group, send email to datamap...@googlegroups.com. To unsubscribe from this group, send email to datamapper+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/datamapper?hl=en.
