Add a permission to remove issue watchers (#2450).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2977 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/watchers_controller.rb

@@ -18,7 +18,7 @@
 class WatchersController < ApplicationController
   before_filter :find_project
   before_filter :require_login, :check_project_privacy, :only => [:watch, :unwatch]
-  before_filter :authorize, :only => :new
+  before_filter :authorize, :only => [:new, :destroy]
   
   verify :method => :post,
          :only => [ :watch, :unwatch ],
@@ -48,6 +48,18 @@ class WatchersController < ApplicationController
     render :text => 'Watcher added.', :layout => true
   end
   
+  def destroy
+    @watched.set_watcher(User.find(params[:user_id]), false) if request.post?
+    respond_to do |format|
+      format.html { redirect_to :back }
+      format.js do
+        render :update do |page|
+          page.replace_html 'watchers', :partial => 'watchers/watchers', :locals => {:watched => @watched}
+        end
+      end
+    end
+  end
+  
 private
   def find_project
     klass = Object.const_get(params[:object_type].camelcase)

app/helpers/watchers_helper.rb

@@ -36,6 +36,21 @@ module WatchersHelper
   
   # Returns a comma separated list of users watching the given object
   def watchers_list(object)
-    object.watcher_users.collect {|u| content_tag('span', link_to_user(u), :class => 'user') }.join(",\n")
+    remove_allowed = User.current.allowed_to?("delete_#{object.class.name.underscore}_watchers".to_sym, object.project)
+    object.watcher_users.collect do |user|
+      s = content_tag('span', link_to_user(user), :class => 'user')
+      if remove_allowed
+        url = {:controller => 'watchers',
+               :action => 'destroy',
+               :object_type => object.class.to_s.underscore,
+               :object_id => object.id,
+               :user_id => user}
+        s += ' ' + link_to_remote(image_tag('delete.png'),
+                                  {:url => url},
+                                  :href => url_for(url),
+                                  :style => "vertical-align: middle")
+      end
+      s
+    end.join(",\n")
   end
 end

lib/redmine.rb

@@ -52,6 +52,7 @@ Redmine::AccessControl.map do |map|
     # Watchers
     map.permission :view_issue_watchers, {}
     map.permission :add_issue_watchers, {:watchers => :new}
+    map.permission :delete_issue_watchers, {:watchers => :destroy}
   end
   
   map.project_module :time_tracking do |map|

test/fixtures/roles.yml

@@ -18,6 +18,7 @@ roles_001:
     - :delete_issues
     - :view_issue_watchers
     - :add_issue_watchers
+    - :delete_issue_watchers
     - :manage_public_queries
     - :save_queries
     - :view_gantt

test/functional/watchers_controller_test.rb

@@ -67,4 +67,14 @@ class WatchersControllerTest < ActionController::TestCase
     end
     assert Issue.find(2).watched_by?(User.find(4))
   end
+  
+  def test_remove_watcher
+    @request.session[:user_id] = 2
+    assert_difference('Watcher.count', -1) do
+      xhr :post, :destroy, :object_type => 'issue', :object_id => '2', :user_id => '3'
+      assert_response :success
+      assert_select_rjs :replace_html, 'watchers'
+    end
+    assert !Issue.find(2).watched_by?(User.find(3))
+  end
 end