Deduplicate shared logic in `TimelineController`

app/controllers/timeline_controller.rb

@@ -4,36 +4,30 @@ class TimelineController < ApplicationController
   before_action :authenticate_user!
 
   def index
-    @timeline = current_user.cursored_timeline(last_id: params[:last_id])
-    @timeline_last_id = @timeline.map(&:id).min
-    @more_data_available = !current_user.cursored_timeline(last_id: @timeline_last_id, size: 1).count.zero?
-
-    respond_to do |format|
-      format.html
-      format.js { render layout: false }
-    end
+    paginate_timeline { |args| current_user.cursored_timeline(**args) }
   end
 
   def list
     @list = current_user.lists.find_by!(name: params[:list_name])
-    @timeline = @list.cursored_timeline(last_id: params[:last_id])
-    @timeline_last_id = @timeline.map(&:id).min
-    @more_data_available = !@list.cursored_timeline(last_id: @timeline_last_id, size: 1).count.zero?
-
-    respond_to do |format|
-      format.html
-      format.js { render layout: false }
-    end
+    @title = list_title(current_user.lists.find_by!(name: params[:list_name]))
+    paginate_timeline { |args| @list.cursored_timeline(**args) }
   end
 
   def public
-    @timeline = Answer.cursored_public_timeline(last_id: params[:last_id])
+    @title = generate_title("Public Timeline")
+    paginate_timeline { |args| Answer.cursored_public_timeline(**args) }
+  end
+
+  private
+
+  def paginate_timeline
+    @timeline = yield(last_id: params[:last_id])
     @timeline_last_id = @timeline.map(&:id).min
-    @more_data_available = !Answer.cursored_public_timeline(last_id: @timeline_last_id, size: 1).count.zero?
+    @more_data_available = !yield(last_id: @timeline_last_id, size: 1).count.zero?
 
     respond_to do |format|
-      format.html
-      format.js { render layout: false }
+      format.html { render "timeline/timeline" }
+      format.js { render "timeline/timeline", layout: false }
     end
   end
 end

app/views/timeline/list.haml

@@ -1,13 +0,0 @@
-#timeline
-  - @timeline.each do |answer|
-    = render 'answerbox', a: answer
-
-= render 'shared/cursored_pagination_dummy', more_data_available: @more_data_available, last_id: @timeline_last_id
-
-- if @more_data_available
-  .d-flex.justify-content-center.justify-content-sm-start
-    %button.btn.btn-light#load-more-btn{ type: :button, data: { last_id: @timeline_last_id } }
-      = t 'views.actions.load'
-
-- provide(:title, list_title(@list))
-- parent_layout 'feed'

app/views/timeline/list.js.erb

@@ -1,8 +0,0 @@
-$('#timeline').append('<% @timeline.each do |answer|
-  %><%= j render 'answerbox', a: answer
-%><% end %>');
-<% if @more_data_available %>
-  $('#pagination').html('<%= j render 'shared/cursored_pagination_dummy', more_data_available: @more_data_available, last_id: @timeline_last_id %>');
-<% else %>
-  $('#pagination, #load-more-btn').remove();
-<% end %>

app/views/timeline/public.haml

@@ -1,13 +0,0 @@
-#timeline
-  - @timeline.each do |answer|
-    = render 'answerbox', a: answer
-
-= render 'shared/cursored_pagination_dummy', more_data_available: @more_data_available, last_id: @timeline_last_id
-
-- if @more_data_available
-  .d-flex.justify-content-center.justify-content-sm-start
-    %button.btn.btn-light#load-more-btn{ type: :button, data: { last_id: @timeline_last_id } }
-      = t 'views.actions.load'
-
-- provide(:title, generate_title('Public Timeline'))
-- parent_layout 'feed'

app/views/timeline/public.js.erb

@@ -1,8 +0,0 @@
-$('#timeline').append('<% @timeline.each do |answer|
-  %><%= j render 'answerbox', a: answer
-%><% end %>');
-<% if @more_data_available %>
-  $('#pagination').html('<%= j render 'shared/cursored_pagination_dummy', more_data_available: @more_data_available, last_id: @timeline_last_id %>');
-<% else %>
-  $('#pagination, #load-more-btn').remove();
-<% end %>

app/views/timeline/timeline.haml

@@ -1,13 +1,13 @@
 #timeline
   - @timeline.each do |answer|
-    = render 'answerbox', a: answer
+    = render "answerbox", a: answer
 
-= render 'shared/cursored_pagination_dummy', more_data_available: @more_data_available, last_id: @timeline_last_id
+= render "shared/cursored_pagination_dummy", more_data_available: @more_data_available, last_id: @timeline_last_id
 
 - if @more_data_available
   .d-flex.justify-content-center.justify-content-sm-start
     %button.btn.btn-light#load-more-btn{ type: :button, data: { last_id: @timeline_last_id } }
       = t 'views.actions.load'
 
-- provide(:title, APP_CONFIG['site_name'])
+- provide(:title, @title ||= APP_CONFIG["site_name"])
 - parent_layout 'feed'