Add view for repos with a specific label

Author: avcwisesa

app/controllers/pages_controller.rb

@@ -51,6 +51,38 @@ def index
     end
   end
 
+  def topic
+    topic_name = params['topic']
+
+    set_title("Open Source Project Topic: #{topic_name}")
+    set_description(description)
+
+    label = Label.find_by(name: topic_name)
+
+    @topic_repos = Repo.with_some_issues
+                 .includes(:repo_labels)
+                 .where(repo_labels: {label_id: label.id})
+                 .select(:id, :updated_at, :issues_count, :language, :full_name, :name, :description)
+
+    @repos = @topic_repos.without_user_subscriptions(current_user.id) if user_signed_in?
+    @repos = @repos.order_by_issue_count.page(valid_params[:page]).per_page(valid_params[:per_page] || 50)
+
+    topic_repo_ids = @topic_repos.map { |repo| repo.id }
+
+    if user_signed_in?
+      @repos_subs = current_user.repo_subscriptions.page(valid_params[:page]).per_page(valid_params[:per_page] || 50).includes(:repo)
+      @repos_subs = @repos_subs.where(repo_id: topic_repo_ids)
+    end
+
+    respond_to do |format|
+      format.html {}
+      format.json do
+        htmlForPage = render_to_string(partial: "repos_with_pagination", locals: { repos: @repos }, formats: ['html'])
+        render json: { html: htmlForPage }.to_json
+      end
+    end
+  end
+
   private
 
   def description

app/views/pages/topic.html.slim

@@ -0,0 +1,22 @@
+.hero
+  h1.hero-title-primary Topic: #{params["topic"]}
+
+  - unless user_signed_in?
+      = link_to user_github_omniauth_authorize_path, class: 'button', method: :post
+        | Sign up with GitHub
+
+hr.section-break
+
+- if @repos_subs.present?
+  .repos-list-wrapper
+    h2.repos-list-title Repos you are currently helping
+    .hero-repo-list-container
+      = render 'repo_subscriptions/list', repos_subs: @repos_subs
+
+  hr.section-break
+
+.repos-list-wrapper
+  h2.repos-list-title Open source projects on GitHub that need your help.
+
+  section.repo-list-with-pagination
+    = render "repos_with_pagination", repos: @repos

config/routes.rb

@@ -28,6 +28,8 @@
 
   root to: "pages#index"
 
+  get "/topics/:topic", to: "pages#topic"
+
   get 'what'    => "pages#what"
   get 'privacy' => "pages#privacy"
   get 'support' => 'pages#support'