From a4b4af3373fea3afb48a6a0a4ab47047c64752ba Mon Sep 17 00:00:00 2001
From: MAEDA Go <maeda@farend.jp>
Date: Wed, 27 Aug 2025 15:05:55 +0900
Subject: [PATCH 2/2] Show the 'Delete' item in the context menu only when
 opened from Issues#index, Gantts#show, or Calendars#show.

---
 app/controllers/context_menus_controller.rb | 13 +++++++++++++
 app/views/context_menus/issues.html.erb     |  6 ++++--
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/app/controllers/context_menus_controller.rb b/app/controllers/context_menus_controller.rb
index 1e37f623b..bb9e5d82f 100644
--- a/app/controllers/context_menus_controller.rb
+++ b/app/controllers/context_menus_controller.rb
@@ -46,6 +46,19 @@ class ContextMenusController < ApplicationController
 
     @priorities = IssuePriority.active.reverse
     @back = back_url
+    begin
+      # Recognize the controller and action from the back_url to determine
+      # which view triggered the context menu.
+      route = Rails.application.routes.recognize_path(@back)
+      @include_delete =
+        [
+          {controller: 'issues', action: 'index'},
+          {controller: 'gantts', action: 'show'},
+          {controller: 'calendars', action: 'show'}
+        ].any?(route.slice(:controller, :action))
+    rescue ActionController::RoutingError
+      @include_delete = false
+    end
 
     @columns = params[:c]
 
diff --git a/app/views/context_menus/issues.html.erb b/app/views/context_menus/issues.html.erb
index ee7eaa18c..23b7718f1 100644
--- a/app/views/context_menus/issues.html.erb
+++ b/app/views/context_menus/issues.html.erb
@@ -173,8 +173,10 @@
   <li><%= context_menu_link sprite_icon('copy', l(:button_copy)), bulk_edit_issues_path(:ids => @issue_ids, :copy => '1'),
                             :class => 'icon icon-copy', :disabled => !@can[:copy] %></li>
 <% end %>
-  <li><%= context_menu_link sprite_icon('del', l(:button_delete_object, object_name: (@issue_ids.size > 1 ? l(:label_issue_plural) : l(:label_issue))).capitalize), issues_path(:ids => @issue_ids, :back_url => @back),
-                            :method => :delete, :data => {:confirm => issues_destroy_confirmation_message(@issues)}, :class => 'icon icon-del', :disabled => !@can[:delete] %></li>
+  <% if @include_delete %>
+    <li><%= context_menu_link sprite_icon('del', l(:button_delete_object, object_name: (@issue_ids.size > 1 ? l(:label_issue_plural) : l(:label_issue))).capitalize), issues_path(:ids => @issue_ids, :back_url => @back),
+                              :method => :delete, :data => {:confirm => issues_destroy_confirmation_message(@issues)}, :class => 'icon icon-del', :disabled => !@can[:delete] %></li>
+  <% end %>
 
   <%= call_hook(:view_issues_context_menu_end, {:issues => @issues, :can => @can, :back => @back }) %>
 </ul>
-- 
2.50.1