On Monday, April 2, 2018 at 2:35:43 AM UTC-7, Андрей Аладьев wrote: > > Hello. I am going to store association created/updated dates. > > class A > # any association with join table > many_to_many :bs, :join_table => :a_with_bs > end > class B > many_to_many :as, :join_table => :a_with_bs > end > class AWithB > plugin :timestamps > end > > a.add_b b > > It will just insert foreign keys > INSERT into a_with_bs (a_id, b_id) ... > > I've found a method *def_many_to_many* in *model/associations.rb*. It > uses: > > def _join_table_dataset(opts) > ds = model.db.from(opts.join_table_source) > opts[:join_table_block] ? opts[:join_table_block].call(ds) : ds > end > > It is not able to call *before_update* or *before_validation* of AWithB. > Do you plan to support timestamps in join table model? Now we can use > postgresql triggers instead. Thank you. >
many_to_many does not use a model for the join table, so it won't do validations, hooks, etc.. You should use one_to_many instead if you want model methods to be called in the association modification methods: A.one_to_many :a_with_bs, :key=>:a_id a.add_a_with_b(:b_id=>b.id) However, if you can use database triggers, that is usually a better way to go. Thanks, Jeremy -- You received this message because you are subscribed to the Google Groups "sequel-talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to sequel-talk+unsubscr...@googlegroups.com. To post to this group, send email to sequel-talk@googlegroups.com. Visit this group at https://groups.google.com/group/sequel-talk. For more options, visit https://groups.google.com/d/optout.
