prevent new users from downvoting

don't show downvote arrows for logged-out and new users

color comments from new users in green like in the user tree,
and banned users in gray

app/assets/stylesheets/application.css

@@ -391,8 +391,8 @@ div.voters div.score {
 	text-align: center;
 }
 
-div.voters a.upvoter,
-div.voters a.downvoter {
+div.voters .upvoter,
+div.voters .downvoter {
 	border-color: transparent transparent #bbb transparent;
 	border-style: solid;
 	border-width: 6px;
@@ -405,16 +405,16 @@ div.voters a.downvoter {
 	display: block;
 }
 
-div.voters a.upvoter:hover,
-li.upvoted div.voters a.upvoter {
+div.voters .upvoter:hover,
+li.upvoted div.voters .upvoter {
 	border-bottom-color: #ac130d;
 }
 
-div.voters a.upvoter {
+div.voters .upvoter {
 	border-bottom-width: 11px;
 }
 
-div.voters a.downvoter {
+div.voters .downvoter {
 	border-color: #bbb transparent transparent transparent;
 	border-width: 5px;
 	margin-top: 4px;
@@ -422,11 +422,15 @@ div.voters a.downvoter {
 	margin-bottom: -5px;
 	border-top-width: 9px;
 }
-div.voters a.downvoter:hover,
-li.downvoted div.voters a.downvoter {
+div.voters .downvoter:hover,
+li.downvoted div.voters .downvoter {
 	border-top-color: gray;
 }
 
+div.voters .downvoter.downvoter_stub {
+	border-color: transparent;
+}
+
 li.story,
 li.comment {
 	clear: both;
@@ -503,6 +507,16 @@ li .byline a {
 	color: #888;
 	text-decoration: none;
 }
+.new_user,
+li .byline a.new_user {
+	color: green;
+}
+.banned_user,
+li .byline a.banned_user {
+	color: gray;
+	text-decoration: line-through;
+}
+
 
 li.story.expired {
 	opacity: 0.6;

app/controllers/comments_controller.rb

@@ -8,7 +8,8 @@ class CommentsController < ApplicationController
   before_filter :find_user_from_rss_token, :only => [ :index ]
 
   def create
-    if !(story = Story.where(:short_id => params[:story_id]).first) || story.is_gone?
+    if !(story = Story.where(:short_id => params[:story_id]).first) ||
+    story.is_gone?
       return render :text => "can't find story", :status => 400
     end
 
@@ -174,6 +175,10 @@ class CommentsController < ApplicationController
       return render :text => "invalid reason", :status => 400
     end
 
+    if !@user.can_downvote?
+      return render :text => "not permitted to downvote", :status => 400
+    end
+
     Vote.vote_thusly_on_story_or_comment_for_user_because(-1, comment.story_id,
       comment.id, @user.id, params[:reason])
 

app/controllers/stories_controller.rb

@@ -238,6 +238,10 @@ class StoriesController < ApplicationController
       return render :text => "invalid reason", :status => 400
     end
 
+    if !@user.can_downvote?
+      return render :text => "not permitted to downvote", :status => 400
+    end
+
     Vote.vote_thusly_on_story_or_comment_for_user_because(-1, story.id,
       nil, @user.id, params[:reason])
 

app/models/user.rb

@@ -92,8 +92,9 @@ class User < ActiveRecord::Base
     true
   end
 
-  def is_banned?
-    banned_at?
+  def can_downvote?
+    # TODO: maybe change this to require a certain level of karma
+    !is_new?
   end
 
   def check_session_token
@@ -125,6 +126,14 @@ class User < ActiveRecord::Base
     PasswordReset.password_reset_link(self, ip).deliver
   end
 
+  def is_banned?
+    banned_at?
+  end
+
+  def is_new?
+    Time.now - self.created_at <= 7.days
+  end
+
   def linkified_about
     # most users are probably mentioning "@username" to mean a twitter url, not
     # a link to a profile on this site

app/views/comments/_comment.html.erb

@@ -8,11 +8,17 @@ class="comment <%= comment.current_vote ? (comment.current_vote[:vote] == 1 ?
   <%= comment.score <= -7 ? "negative_7" : "" %>">
   <% if !comment.is_gone? %>
     <div class="voters">
-      <a class="upvoter"></a>
-      <div class="score">
-        <%= comment.score %>
-      </div>
-      <a class="downvoter"></a>
+      <% if @user %>
+        <a class="upvoter"></a>
+      <% else %>
+        <%= link_to "", login_url, :class => "upvoter" %>
+      <% end %>
+      <div class="score"><%= comment.score %></div>
+      <% if @user && @user.can_downvote? %>
+        <a class="downvoter"></a>
+      <% else %>
+        <span class="downvoter downvoter_stub"></span>
+      <% end %>
     </div>
   <% end %>
   <div class="details">
@@ -22,8 +28,13 @@ class="comment <%= comment.current_vote ? (comment.current_vote[:vote] == 1 ?
         previewed
         just now
       <% else %>
-        <a href="/u/<%= comment.user.username %>"><%= comment.user.username
-          %></a>
+        <a href="/u/<%= comment.user.username %>"
+        <% if comment.user.is_banned? %>
+          class="banned_user"
+        <% elsif comment.user.is_new? %>
+          class="new_user"
+        <% end %>
+        ><%= comment.user.username %></a>
 
         <%= comment.has_been_edited?? "edited" : "" %>
         <%= raw(time_ago_in_words_label(comment.has_been_edited? ?

app/views/stories/_listdetail.html.erb

@@ -8,10 +8,10 @@ class="story <%= story.vote == 1 ? "upvoted" : (story.vote == -1 ?
       <%= link_to "", login_url, :class => "upvoter" %>
     <% end %>
     <div class="score"><%= story.upvotes - story.downvotes %></div>
-    <% if @user %>
+    <% if @user && @user.can_downvote? %>
       <a class="downvoter"></a>
     <% else %>
-      <%= link_to "", login_url, :class => "downvoter" %>
+      <span class="downvoter downvoter_stub"></span>
     <% end %>
   </div>
   <div class="details">

app/views/users/tree.html.erb

@@ -11,9 +11,9 @@
         <li>
           <a href="/u/<%= user.username %>"
             <% if user.is_banned? %>
-              style="color: gray; text-decoration: line-through;"
-            <% elsif Time.now - user.created_at < 7.days %>
-              style="color: green;"
+              class="banned_user"
+            <% elsif user.is_new? %>
+              class="new_user"
             <% end %>
             ><%= user.username %></a>&nbsp;(<%= user.karma %>)
           <% if user.is_admin? %>