exception for view

app/views/exceptions/_not_found_topics.html.erb

@@ -0,0 +1,24 @@
+<div class="row page-not-found-topics">
+  <% if @top_viewed.count > 0 %>
+    <div class="popular-topics">
+      <h2 class="popular-topics-title"><%= t 'page_not_found.popular_topics' %></h2>
+      <% @top_viewed.each do |t| %>
+        <div class='not-found-topic'>
+          <%= link_to emoji_codes_to_img(t.fancy_title), t.relative_url %><%= category_badge(t.category) %>
+        </div>
+      <% end %>
+      <a href="<%= path "/top" %>" class="btn btn-default"><%= t 'page_not_found.see_more' %>&hellip;</a>
+    </div>
+  <% end %>
+  <% if @recent.count > 0 %>
+    <div class="recent-topics">
+      <h2 class="recent-topics-title"><%= t 'page_not_found.recent_topics' %></h2>
+      <% @recent.each do |t| %>
+        <div class='not-found-topic'>
+          <%= link_to t.title, t.relative_url %><%= category_badge(t.category) %>
+        </div>
+      <% end %>
+      <a href="<%= path "/latest" %>" class="btn btn-default"><%= t 'page_not_found.see_more' %>&hellip;</a>
+    </div>
+  <% end %>
+</div>

app/views/exceptions/not_found.html.erb

@@ -0,0 +1,35 @@
+<% content_for :title do %><%= @page_title %> - <%= SiteSetting.title %><% end %>
+
+<div class="page-not-found">
+  <h1 class="title"><%= @title %></h1>
+
+  <%- if !@current_user %>
+    <a href="<%= path "/login" %>" class='btn btn-primary'><%= SvgSprite.raw_svg('fa-user') %><%= I18n.t('log_in') %></a>
+  <%- end %>
+
+  <%- if @group&.allow_membership_requests %>
+    <a href="<%= group_path @group.name %>" class='btn btn-primary'><%= SvgSprite.raw_svg('user-plus') %> <%= I18n.t('not_in_group.request_membership') %></a>
+  <%- elsif @group&.public_admission %>
+    <a href="<%= group_path @group.name %>" class='btn btn-primary'><%= SvgSprite.raw_svg('user-plus') %> <%= I18n.t('not_in_group.join_group') %></a>
+  <%- end %>
+</div>
+
+<%= build_plugin_html 'server:not-found-before-topics' %>
+
+<%= @topics_partial %>
+
+<%- unless @hide_search%>
+  <div class="row">
+    <div class="page-not-found-search">
+      <h2><%= t 'page_not_found.search_title' %></h2>
+      <p>
+        <form action='<%= path "/search" %>' id='discourse-search'>
+          <input type="text" name="q" value="<%= @slug %>">
+          <button class="btn btn-primary"><%= t 'page_not_found.search_button' %></button>
+        </form>
+      </p>
+    </div>
+  </div>
+
+  <%= preload_script('onpopstate-handler') %>
+<%- end %>

app/views/exceptions/read_only.html.erb

@@ -0,0 +1 @@
+<p><%= t('read_only_mode_enabled') %></p>