Thanks very much for the detailed response. This is very helpful. Did you consider other Ruby ORMs, like Sequel, rather than ActiveRecord? http://sequel.rubyforge.org/ If so, I'd appreciate your thoughts on why you chose to go with ActiveRecord instead.
Best, David On Fri, Apr 5, 2013 at 7:26 AM, Chris Corbyn <ch...@w3style.co.uk> wrote: > Here's my $0.02. We're currently in the middle of the huge refactor to > remove DM1 from our app and switch over to ActiveRecord. We've been using > DM1 for about 18 months at this point. > > - DM1 is not being actively developed. Discussion with the core > contributors on Twitter came to the conclusion that support for it has > ceased and there are no plans to maintain the code any further ( > https://twitter.com/dkubb/status/304315005619273728) > - Even Pull Requests are not being actioned at this point ( > https://github.com/datamapper/dm-core/pulls) > - DM2 is quite different to DM1, and the release date is still > unknown. Either way, moving from DM1 to DM2 is going to be painful in a > large app. > - Because DM1 is not maintained, issues are beginning to crop up with > common dependencies (e.g. multi_json, addressable) that hold back the > entire project (https://github.com/datamapper/dm-core/issues/216). > - You'll run into issues with many Rails gems assuming you're using > ActiveRecord. This hasn't been a huge issue for us, as many gem authors > have begun to support other ORMs, but it does throw some hurdles in front > of you. > - Some things that "should" work in DM1 don't work, and don't work in > fairly serious ways e.g. > * (Model.all( … ) | Model.all( … )).all( … ).destroy (incorrectly > deletes all records from the table) > * Models can fail to save due to validation errors on related > models, which are *extremely* difficult to track down. > - Currently DM1 isn't compatible with Ruby 2.0… in light of the ceased > development, this is a problem for us. > > I think if you're starting a new Rails project, you would do well to just > use ActiveRecord and avoid a world of pain trying to use DM1 as it > currently stands ;) > > > Il giorno 05/apr/2013, alle ore 21:58, david_harri...@brown.edu ha > scritto: > > Hello, > > I'm considering using datamapper 1.2 on a project. > > However, I'm curious what are the "various integration issues" that might > be encountered when using DM 1.2? (See reference below, from December). > Have those issues been resolved? > > On Saturday, December 1, 2012 8:30:28 AM UTC-5, solnic wrote: >> >> >> It's also probably worth to mention that DM1's development is no longer >> very active. We're busy working on the next major version of DM which >> implements Data Mapper pattern and that's probably something you're looking >> for unfortunately it's not finished yet. >> >> DM1, given its stale development, is not really a good choice IMHO. >> ActiveRecord has much better support in Rails and you can face various >> integration issues when using DM1 (no matter how much I hate to admit that >> heh). It is also a big unknown when and even IF we're going to release DM >> 1.3.0. >> >> # solnic >> >> > -- > You received this message because you are subscribed to the Google Groups > "DataMapper" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to datamapper+unsubscr...@googlegroups.com. > > To post to this group, send email to datamapper@googlegroups.com. > Visit this group at http://groups.google.com/group/datamapper?hl=en. > For more options, visit https://groups.google.com/groups/opt_out. > > > > > -- > You received this message because you are subscribed to a topic in the > Google Groups "DataMapper" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/datamapper/UCHC5TF6I0M/unsubscribe?hl=en > . > To unsubscribe from this group and all its topics, send an email to > datamapper+unsubscr...@googlegroups.com. > To post to this group, send email to datamapper@googlegroups.com. > Visit this group at http://groups.google.com/group/datamapper?hl=en. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- David Harrison Lead Developer Analyst Computing & Information Services Brown University 401-863-7455 -- You received this message because you are subscribed to the Google Groups "DataMapper" group. To unsubscribe from this group and stop receiving emails from it, send an email to datamapper+unsubscr...@googlegroups.com. To post to this group, send email to datamapper@googlegroups.com. Visit this group at http://groups.google.com/group/datamapper?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
