undefined method `arity'

[nhcfk]

I'm getting: undefined method `arity' for {:class_name=>"Person", :optional=>true, :foreign_key=>"father_id"}:Hash

I'm using Ruby 3.0.0 and Rails 6.1.1. Followed all the install steps and added indexes, still crashing with said message. The entry point for the error is has_parents on person.rb.

Any ideas?

[masciugo]

it's not tested against ruby 3 and rails 6.1. could you try with ruby 2 and rails 6.0?

[nhcfk]

Tested working with Ruby 2.6.3 and Rails 6.0.
Can't really find anything useful online on the error.

[masciugo]

I cannot investigate this currently. However I would try to find out if it's caused by last rails or last ruby firstly. I guess I may be able to debug this not earlier than 2 weeks sorry. Let me know if you find anything

[nhcfk]

So, basically, I'm still stuck, I don't really have much experience debugging.

Currently, I'm stuck in this file active_record/associations/builder/association.rb.

I landed there from genealogy.rb around line 98:

      tracked_relatives.each do |k|
        belongs_to k, belongs_to_options.merge(foreign_key: self.send("#{k}_id_column"))
      end

I ran diffs on both active_record/associations/builder/association.rb and active_record/associations/builder/belongs_to.rb from the working ActiveRecord version 5.2.1 and the one crashing 6.1.1 and there are a few differences but even then I'm not able to spot what might be causing the problem.

on binding.pry at line 53 of association.rb :

    52: def self.build_scope(scope)
 => 53:   binding.pry
    54:   if scope && scope.arity == 0
    55:     proc { instance_exec(&scope) }
    56:   else
    57:     scope
    58:   end
    59: end

The scope being:

[1] pry(ActiveRecord::Associations::Builder::HasOne)> scope
[1] pry(ActiveRecord::Associations::Builder::HasOne)> scope=> #<Proc:0x00007fcbc8373d90 /Users//.rbenv/versions/3.0.0/lib/ruby/gems/3.0.0/gems/activestorage-6.1.1/lib/active_storage/attached/model.rb:70 (lambda)>

I then checked active_storage/attached/model.rb and noticed I get stopped on line 70 where: name is :profile_picture coming from my User model (has_one_attached :profile_picture).

70: has_one :"#{name}_attachment", -> { where(name: name) }, class_name: "ActiveStorage::Attachment", as: :record, inverse_of: :record, dependent: :destroy, strict_loading: strict_loading

This particular file has got quite a bit differences with the 5.2.1 version diff here

I'd really wish I could help some more but I'm afraid I reached my limit in this regard.

Regards,
Nelson

[masciugo]

Thank you for your effort but I would not go so deep right now. First of all I can confirm that the arity problem is related to ruby3 and not to rails 6.1. Is ruby3 a requirement for you?

[nhcfk]

Is ruby3 a requirement for you?

Not really, TBH. I took the whole thing down to 2.7.2
It's working as expected now so I'll stay out of 3 for now.

Regards