From ee09df6b75cafa25e1b4b132abacecaf25e5be29 Mon Sep 17 00:00:00 2001
From: Tomas Babej <tomasbabej@gmail.com>
Date: Sun, 21 Sep 2014 17:44:04 +0200
Subject: [PATCH] Support showing comments in reversed order

---
 README.rst                                         | 11 +++++++++++
 fluent_comments/appsettings.py                     |  2 ++
 .../static/fluent_comments/js/ajaxcomments.js      | 14 +++++++++++---
 .../fluent_comments/templatetags/flat_list.html    |  6 +++++-
 fluent_comments/views.py                           |  2 ++
 5 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/README.rst b/README.rst
index d85482e..47e48be 100644
--- a/README.rst
+++ b/README.rst
@@ -173,6 +173,17 @@ It can be enabled using the following settings::
 The templates and admin interface adapt themselves automatically
 to show the threaded comments.
 
+Other settings
+--------------
+
+For reversing the order of the comments (new comments are appended
+at the top of the list, rather than at the end), use the following
+option.
+
+    FLUENT_COMMENTS_ORDER_REVERSED = True
+
+Currently, this supports only simple comments (no threads). This also
+blocks the scrolling for newly posted comments.
 
 Contributing
 ------------
diff --git a/fluent_comments/appsettings.py b/fluent_comments/appsettings.py
index 69b1cc7..da80740 100644
--- a/fluent_comments/appsettings.py
+++ b/fluent_comments/appsettings.py
@@ -19,6 +19,8 @@
 
 FLUENT_COMMENTS_EXCLUDE_FIELDS = getattr(settings, 'FLUENT_COMMENTS_EXCLUDE_FIELDS', ()) or ()
 
+FLUENT_COMMENTS_ORDER_REVERSED = getattr(settings, 'FLUENT_COMMENTS_ORDER_REVERSED', False)
+
 if FLUENT_COMMENTS_AKISMET_ACTION not in ('moderate', 'delete'):
     raise ImproperlyConfigured("FLUENT_COMMENTS_AKISMET_ACTION can be 'moderate' or 'delete'")
 
diff --git a/fluent_comments/static/fluent_comments/js/ajaxcomments.js b/fluent_comments/static/fluent_comments/js/ajaxcomments.js
index 5b727d4..804edc1 100644
--- a/fluent_comments/static/fluent_comments/js/ajaxcomments.js
+++ b/fluent_comments/static/fluent_comments/js/ajaxcomments.js
@@ -112,7 +112,7 @@
 
     function scrollToComment(id, speed)
     {        
-        if( ! ENABLE_COMMENT_SCROLL ) {
+        if( (! ENABLE_COMMENT_SCROLL) || data['order_reversed'] ) {
             return;
         }
         
@@ -133,7 +133,7 @@
 
     function scrollToElement( $element, speed, offset )
     {
-        if( ! ENABLE_COMMENT_SCROLL ) {
+        if( (! ENABLE_COMMENT_SCROLL) || data['order_reversed'] ) {
             return;
         }
         
@@ -287,7 +287,15 @@
     {
         // data contains the server-side response.
         var $newCommentTarget = addCommentWrapper(data, '')
-        $newCommentTarget.append(data['html']).removeClass('empty');
+
+        // prepend or append the comment depending on the settings
+        if (data['order_reversed']) {
+            $newCommentTarget.prepend(data['html']).removeClass('empty');
+        }
+        else {
+            $newCommentTarget.append(data['html']).removeClass('empty');
+        }
+
         return $("#c" + parseInt(data.comment_id));
     }
 
diff --git a/fluent_comments/templates/fluent_comments/templatetags/flat_list.html b/fluent_comments/templates/fluent_comments/templatetags/flat_list.html
index ae8fd3b..551746e 100644
--- a/fluent_comments/templates/fluent_comments/templatetags/flat_list.html
+++ b/fluent_comments/templates/fluent_comments/templatetags/flat_list.html
@@ -8,5 +8,9 @@
 
 {% endcomment %}
 <div id="comments-{{ target_object_id }}" data-object-id="{{ target_object_id }}" class="comments {% if not comment_list %} empty{% endif %}">
-  {% for comment in comment_list %}{% include "comments/comment.html" %}{% endfor %}
+  {% if ORDER_REVERSED %}
+    {% for comment in comment_list reversed %}{% include "comments/comment.html" %}{% endfor %}
+  {% else %}
+    {% for comment in comment_list %}{% include "comments/comment.html" %}{% endfor %}
+  {% endif %}
 </div>
diff --git a/fluent_comments/views.py b/fluent_comments/views.py
index c78c29e..7564dbd 100644
--- a/fluent_comments/views.py
+++ b/fluent_comments/views.py
@@ -130,6 +130,7 @@ def _ajax_result(request, form, action, comment=None, object_id=None):
         'errors': json_errors,
         'object_id': object_id,
         'use_threadedcomments': bool(appsettings.USE_THREADEDCOMMENTS),
+        'order_reversed': bool(appsettings.FLUENT_COMMENTS_ORDER_REVERSED),
     }
 
     if comment is not None:
@@ -138,6 +139,7 @@ def _ajax_result(request, form, action, comment=None, object_id=None):
             'action': action,
             'preview': (action == 'preview'),
             'USE_THREADEDCOMMENTS': appsettings.USE_THREADEDCOMMENTS,
+            'ORDER_REVERSED': appsettings.FLUENT_COMMENTS_ORDER_REVERSED,
         }
         comment_html = render_to_string('comments/comment.html', context, context_instance=RequestContext(request))