Rails 6.1 support

[AlecRust]

My ERB Rake task (the default generated by this gem) is running fine on Rails 6.0.3 but on Rails 6.1 I get:

Loading application environment...
Loading code in search of Active Record models...
Generating Entity-Relationship Diagram for 136 models...
rails aborted!
NoMethodError: undefined method `parent' for MyApplication::Application:Class
Did you mean?  present?
/Users/alec/projects/my-application/bin/rails:12:in `<top (required)>'
/Users/alec/projects/my-application/bin/spring:10:in `require'
/Users/alec/projects/my-application/bin/spring:10:in `block in <top (required)>'
/Users/alec/projects/my-application/bin/spring:7:in `tap'
/Users/alec/projects/my-application/bin/spring:7:in `<top (required)>'
Tasks: TOP => erd => erd:generate
(See full trace by running task with --trace)

[guapolo]

Hello, a possible cause is: domain.rb:52 won't work anymore (Module::parent is deprecated on Rails 6.1 https://edgeguides.rubyonrails.org/6_1_release_notes.html#active-support-removals)

[guapolo]

I needed to finish my Rails version bump fast and continue working, so I just created a quick patch for this issue, at least it should provide a pointer to the maintainers of the project to solve this (I'm sure that they'll do it in a more elegant manner). Cheers 🍻

[guapolo]

Just saw that this is a duplicate of #358, better solution in that thread. Will close my PR.

[0bserver07]

a quick hack here until someone responds to the PR:

mkdir lib/rails_erd/

touch lib/rails_erd/domain.rb

copy the commit content from this file here to below file:

ib/rails_erd/domain.rb

[lulalala]

Can confirm the newly released 1.6.1 fixes this issue

[kerrizor]

@lulalala thanks for the confirmation!
/close