Uninitialized constant after upgrade rails 5.2 to 6.0

Question

After upgrading my RoR app to 6.0, I'm getting this error: NameError: uninitialized constant Sites::NetworkResolver::ExternalApi. This is my app/resolvers/sites/network_resolver.rb file:

module Sites
  class NetworkResolver
    ExternalApi::Graphql
    ...
  end
end

and my app/services/external_api/graphql.rb

module ExternalApi
  module Graphql
   ...
  end 
end

in the app/services folder, I have a settings file with the same name external_api.rb

module ExternalApi
  ...
end

rails zeitwerk:check 
rails aborted!
NameError: uninitialized constant Sites::NetworkResolver::ExternalApi

If I put it at the top of app/resolvers/network_resolver.rb file

require 'external_api/graphql'

I need to update externalApi to externalAPI so that Api is uppercase

app/services/external_api/graphql.rb to define constant ExternalAPI::Graphql, but didn't

so code works but didn't want to update more than 100 files

Answer 1

By default, app/resolvers/network_resolver.rb should define NetworkResolver, rather than Sites:: NetworkResolver, maybe the path is mistaken?

You can force inflection for external_api to not use the acronym this way:

# config/initializers/zeitwerk.rb
Rails.autoloaders.main.inflector.inflect("external_api" => "ExternalApi")