sitemap generation for multi-language websites does not write out correct urls

[rickythefox]

Steps to reproduce

1. Create a multi-language website, let's say the default language is fr and the alternative language is en.
2. Create a few pages in each website.
3. In config/initializers/locale.rb set I18n.default_locale = :fr
4. Check /sitemap.xml
5. In config/initializers/locale.rb set I18n.default_locale = :en
6. Check /sitemap.xml

Expected behavior

Links for the non-default language should be prefixed with the correct language, /en/ or /fr/. The sitemaps should not depend on the setting in locale.rb.

Actual behavior

Depending on the setting in locale.rb no links are prefixed, sitemap points to non-existing pages.

Proposed solution

I think helpers/alchemy/url_helper.rb:28 should call prefix_locale?(page.language_code) instead of just prefix_locale?. Otherwise it ends up using Language.current&.code.

System configuration

• Alchemy Version: 2.0.5
• Rails Version: 6.0.0