Filter out selected list from lists dropdown

app/controllers/timeline_controller.rb

@@ -2,14 +2,15 @@
 
 class TimelineController < ApplicationController
   before_action :authenticate_user!
+  before_action :set_list, only: %i[list]
+  before_action :set_lists
 
   def index
     paginate_timeline { |args| current_user.cursored_timeline(**args) }
   end
 
   def list
-    @list = current_user.lists.find_by!(name: params[:list_name])
-    @title = list_title(current_user.lists.find_by!(name: params[:list_name]))
+    @title = list_title(@list)
     paginate_timeline { |args| @list.cursored_timeline(**args) }
   end
 
@@ -20,6 +21,15 @@ class TimelineController < ApplicationController
 
   private
 
+  def set_list
+    @list = current_user.lists.find_by!(name: params[:list_name]) if params[:list_name].present?
+  end
+
+  def set_lists
+    @lists = current_user.lists
+    @lists = @lists.where.not(id: @list.id) if @list.present?
+  end
+
   def paginate_timeline
     @timeline = yield(last_id: params[:last_id])
     @timeline_last_id = @timeline.map(&:id).min

app/views/layouts/feed.haml

@@ -2,6 +2,6 @@
   .row
     .col-sm-10.col-md-10.col-lg-9.mx-auto
       = render 'layouts/messages'
-      = render 'tabs/feed', list: @list
+      = render 'tabs/feed', lists: @lists, list: @list
       = yield
   .d-block.d-sm-none= render 'shared/links'

app/views/tabs/_feed.haml

@@ -15,12 +15,11 @@
         - if list.members.empty?
           %p.text-muted= t(".list.members.none")
         - else
-          %p.px-4
+          %p.px-4.pb-2
             - list.members.each do |member|
               %a{ href: user_path(member.user), title: member.user.screen_name, data: { toggle: :tooltip, placement: :top } }
                 %img.avatar-xs{ src: member.user.profile_picture.url(:small), loading: :lazy }
-        %li.dropdown-divider
-      - if current_user.lists.empty?
+      - if !list && lists.empty?
         .p-3= t(".lists.notice_html")
-      - current_user.lists.each do |list|
+      - lists.each do |list|
         %a.dropdown-item{ href: list_timeline_path(list.name) }= list.display_name