Moving on from React, a year later(kellysutton.com)

    it "renders my posts" do
      post0 = create(:post, user: current_user, title: "Foo")
      post1 = create(:post, user: current_user, title: "Bar")
    
      response = get "/my-posts"
      document = parse_html response.body
    
      expect(document.css("tr td.title").map(&:text))
        .to match(["Foo", "Bar"])
    end

    <%= render "posts", posts: Post.all %>

    module UserPosts
      extends self
    
      def get_user_posts(user, opts)
        user.posts.with_opts_or_something(opts)
      end
    end

    class UserPostsController < Whatever::Base
      include UserPosts

      def index
        @posts = get_user_posts(current_user, page: params[:page])
      end
    end