fixes #2822: Post vote API: returns 200 for both success and failure; fixes bug with x-api-limit header

app/controllers/application_controller.rb

@@ -47,7 +47,7 @@ class ApplicationController < ActionController::Base
       end
 
       throttled = CurrentUser.user.token_bucket.throttled?
-      headers["X-Api-Limit"] = CurrentUser.user.token_bucket.token_count
+      headers["X-Api-Limit"] = CurrentUser.user.token_bucket.token_count.to_s
 
       if throttled
         respond_to do |format|

app/controllers/comment_votes_controller.rb

@@ -1,11 +1,14 @@
 class CommentVotesController < ApplicationController
   respond_to :js, :json, :xml
   before_filter :member_only
+  skip_before_filter :api_check
 
   def create
     @comment = Comment.find(params[:comment_id])
     @comment_vote = @comment.vote!(params[:score])
-    respond_with(@comment_vote)
+  rescue CommentVote::Error, ActiveRecord::RecordInvalid => x
+    @error = x
+    render status: 500
   end
 
   def destroy
@@ -13,5 +16,6 @@ class CommentVotesController < ApplicationController
     @comment.unvote!(params[:score])
   rescue CommentVote::Error => x
     @error = x
+    render status: 500
   end
 end

app/controllers/post_votes_controller.rb

@@ -5,8 +5,9 @@ class PostVotesController < ApplicationController
   def create
     @post = Post.find(params[:post_id])
     @post.vote!(params[:score])
-  rescue PostVote::Error => x
+  rescue PostVote::Error, ActiveRecord::RecordInvalid => x
     @error = x
+    render status: 500
   end
 
   def destroy
@@ -14,5 +15,6 @@ class PostVotesController < ApplicationController
     @post.unvote!
   rescue PostVote::Error => x
     @error = x
+    render status: 500
   end
 end

app/models/comment.rb

@@ -109,14 +109,12 @@ class Comment < ActiveRecord::Base
   module VoteMethods
     def vote!(val)
       numerical_score = val == "up" ? 1 : -1
-      vote = votes.create(:score => numerical_score)
+      vote = votes.create!(:score => numerical_score)
 
-      if vote.errors.empty?
-        if vote.is_positive?
-          update_column(:score, score + 1)
-        elsif vote.is_negative?
-          update_column(:score, score - 1)
-        end
+      if vote.is_positive?
+        update_column(:score, score + 1)
+      elsif vote.is_negative?
+        update_column(:score, score - 1)
       end
 
       return vote

app/models/post.rb

@@ -1075,7 +1075,7 @@ class Post < ActiveRecord::Base
         raise PostVote::Error.new("You have already voted for this post")
       end
 
-      PostVote.create(:post_id => id, :score => score)
+      PostVote.create!(:post_id => id, :score => score)
       reload # PostVote.create modifies our score. Reload to get the new score.
     end
 

app/views/comment_votes/create.js.erb

@@ -1,10 +1,13 @@
-<% if @comment_vote.errors.any? %>
+<% if @error %>
+  Danbooru.error("<%= j @error.to_s %>");
+<% elsif @comment_vote.errors.any? %>
   Danbooru.error("<%= j @comment_vote.errors.full_messages.join('; ') %>");
 <% else %>
   <% if @comment_vote.is_negative? %>
     $(".comment[data-comment-id=<%= @comment.id %>]").remove();
   <% end %>
+
+  $("#comment-vote-up-link-for-<%= @comment.id %>").hide();
+  $("#comment-vote-down-link-for-<%= @comment.id %>").hide();
+  $("#comment-unvote-link-for-<%= @comment.id %>").show();
 <% end %>
-$("#comment-vote-up-link-for-<%= @comment.id %>").hide();
-$("#comment-vote-down-link-for-<%= @comment.id %>").hide();
-$("#comment-unvote-link-for-<%= @comment.id %>").show();

app/views/comment_votes/destroy.js.erb

@@ -0,0 +1,7 @@
+<% if @error %>
+  Danbooru.error("<%= j @error.to_s %>");
+<% else %>
+  <% if @comment_vote.is_negative? %>
+    $(".comment[data-comment-id=<%= @comment.id %>]").remove();
+  <% end %>
+<% end %>

app/views/post_votes/create.js.erb

@@ -3,6 +3,6 @@
 <% else %>
   Danbooru.notice("Vote saved");
   $("#score-for-post-<%= @post.id %>").html(<%= @post.score %>);
+  $("#vote-links-for-post-<%= @post.id %>").hide();
+  $("#unvote-link-for-post-<%= @post.id %>").show();
 <% end %>
-$("#vote-links-for-post-<%= @post.id %>").hide();
-$("#unvote-link-for-post-<%= @post.id %>").show();