I even like Person.where.missing(:parent). The key distinguisher is to use modifiers on #where, just like we have with #not, rather than hang these off the root scope.
On Tuesday, December 11, 2018 at 3:38:36 PM UTC-8, Joshua Stowers wrote: > > This reminds me of another recent topic: > https://groups.google.com/forum/?fromgroups#!topic/rubyonrails-core/wAkJbUb3mio > They're discussing the idea of adding a presence scope with > `Person.where.present(:name)` > If this method also checks for the presence of associated records like > `Person.where.present(:parent)` then it would make sense to also have a > method that does the opposite (like you're proposing). > Or perhaps it would simply make more sense to instead use > `Person.where.not.present(:parent)`. > > > On Monday, December 10, 2018 at 7:55:51 PM UTC-6, John Pollard wrote: >> >> I definitely find myself looking for orphans to clean up my database. >> What about adding a method scope as "missing_#{relationship_name}" >> >> Book.missing_author #without a parent >> >> Author.missing_books #without children >> >> >> On Tuesday, November 27, 2018 at 5:41:53 PM UTC-5, Tom Rossi wrote: >>> >>> Its common for me to look for orphans and I typically do it like this: >>> >>> Child.eager_load(:parent).where(parents: { id: nil }) >>> >>> I would like to propose putting together a PR for something like this: >>> >>> Child.missing(:parent) >>> Parent.missing(:children) >>> >>> Please let me know if others are interested in the functionality and I >>> would love to give it a shot! >>> >> -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Core" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-core+unsubscr...@googlegroups.com. To post to this group, send email to rubyonrails-core@googlegroups.com. Visit this group at https://groups.google.com/group/rubyonrails-core. For more options, visit https://groups.google.com/d/optout.
