store_articles can't handle Middleman::Sitemap::ProxyResource

[Leko]

Hi there.

I have a problem when using middleman-blog(with pagination) and this plugin.

Problem

similar_articles return empty array always.

execute_article not called even if blog article resource proxied.
Maybe, Middleman::Blog::BlogArticle proxied by paginator.
Problem occured in lib/middleman-blog-similar/database.rb

Expected

execute_article should be called even if proxied blog article resource passed.

              # should unwrap if resource was proxied
              if res.is_a?(Middleman::Sitemap::ProxyResource)
                res = res.target_resource
              end
              next unless res.is_a?(Middleman::Blog::BlogArticle)
              execute_article res

Actual

execute_article not called even if proxied blog article was passed.
(Middleman::Sitemap::ProxyResource is not subclass of Middleman::Blog::BlogArticle)

              next unless res.is_a?(Middleman::Blog::BlogArticle)
              execute_article res

My environment

$ gem -v
2.5.1

$ ruby -v
ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-darwin15]

OS

macOS Sierra (10.12.5)

Middleman versions

middleman (4.2.1)
middleman-blog (4.0.2)
middleman-blog-similar (2.0.1)

config.rb

activate :blog do |blog|
  blog.permalink = "post/{title}/index.html"
  blog.sources = "post/{year}-{month}-{day}-{title}.html"
  blog.taglink = "tag/{tag}.html"
  blog.layout = "layouts/article"
  blog.summary_generator = Proc.new do |article, rendered|
    rendered.split('<!--more-->').first
  end
  blog.default_extension = ".md"
  blog.tag_template = "tag.html"

  blog.paginate = true
  blog.per_page = 15
  blog.page_link = "page/{num}"
end

activate :syntax, :line_numbers => false
activate :similar

[Leko]

I'm sorry, I found a mistake. Close this issue.