Disable the close poll functionality if allow_user_locale is enabled.

plugins/poll/README.md

@@ -9,7 +9,7 @@ Allows you to add a poll to the first post of a topic.
 
 ## Closing the poll
 
-Change the start of the topic title from "Poll: " to "Closed Poll: "
+Change the start of the topic title from "Poll: " to "Closed Poll: ". This feature is disabled if the `allow_user_locale` site setting is enabled.
 
 _Note: closing a topic will also close the poll._
 
@@ -21,12 +21,12 @@ list to be used like this:
 
 ```
 Intro Text
-   
+
 - Item one
 - Item two
-   
+
 Here are your choices:
-   
+
 [poll]
 - Option 1
 - Option 2

plugins/poll/assets/javascripts/discourse/templates/poll.js.handlebars

@@ -24,7 +24,7 @@
   {{/if}}
 </button>
 
-{{#if poll.post.topic.details.can_edit}}
+{{#if controller.showToggleClosePoll}}
   <button {{action toggleClosePoll}} class="btn btn-small">
     {{#if poll.closed}}
       <i class="fa fa-unlock-alt"></i>

plugins/poll/assets/javascripts/poll_ui.js

@@ -45,6 +45,9 @@ var PollController = Discourse.Controller.extend({
   poll: null,
   showResults: Em.computed.oneWay('poll.closed'),
   disableRadio: Em.computed.any('poll.closed', 'loading'),
+  showToggleClosePoll: function() {
+    return this.get('poll.post.topic.details.can_edit') && !Discourse.SiteSettings.allow_user_locale;
+  }.property('poll.post.topic.details.can_edit'),
 
   actions: {
     selectOption: function(option) {

plugins/poll/poll.rb

@@ -60,7 +60,7 @@ module ::PollPlugin
     end
 
     def is_closed?
-      @post.topic.closed? || (@post.topic.title =~ /^#{I18n.t('poll.closed_prefix')}/i) === 0
+      @post.topic.closed? || (!SiteSetting.allow_user_locale? && (@post.topic.title =~ /^#{I18n.t('poll.closed_prefix')}/i) === 0)
     end
 
     def options