fixes #1817

app/logical/anonymous_user.rb

@@ -201,6 +201,10 @@ class AnonymousUser
     true
   end
 
+  def custom_style
+    nil
+  end
+
   %w(member banned gold builder platinum contributor janitor moderator admin).each do |name|
     define_method("is_#{name}?") do
       false

app/models/user.rb

@@ -17,7 +17,7 @@ class User < ActiveRecord::Base
   end
 
   attr_accessor :password, :old_password
-  attr_accessible :enable_privacy_mode, :enable_post_navigation, :new_post_navigation_layout, :password, :old_password, :password_confirmation, :password_hash, :email, :last_logged_in_at, :last_forum_read_at, :has_mail, :receive_email_notifications, :comment_threshold, :always_resize_images, :favorite_tags, :blacklisted_tags, :name, :ip_addr, :time_zone, :default_image_size, :enable_sequential_post_navigation, :per_page, :hide_deleted_posts, :style_usernames, :enable_auto_complete, :as => [:moderator, :janitor, :contributor, :gold, :member, :anonymous, :default, :builder, :admin]
+  attr_accessible :enable_privacy_mode, :enable_post_navigation, :new_post_navigation_layout, :password, :old_password, :password_confirmation, :password_hash, :email, :last_logged_in_at, :last_forum_read_at, :has_mail, :receive_email_notifications, :comment_threshold, :always_resize_images, :favorite_tags, :blacklisted_tags, :name, :ip_addr, :time_zone, :default_image_size, :enable_sequential_post_navigation, :per_page, :hide_deleted_posts, :style_usernames, :enable_auto_complete, :custom_style, :as => [:moderator, :janitor, :contributor, :gold, :member, :anonymous, :default, :builder, :admin]
   attr_accessible :level, :as => :admin
   validates_length_of :name, :within => 2..100, :on => :create
   validates_format_of :name, :with => /\A[^\s:]+\Z/, :on => :create, :message => "cannot have whitespace or colons"
@@ -515,7 +515,7 @@ class User < ActiveRecord::Base
 
   module ApiMethods
     def hidden_attributes
-      super + [:password_hash, :bcrypt_password_hash, :email, :email_verification_key, :time_zone, :updated_at, :receive_email_notifications, :last_logged_in_at, :last_forum_read_at, :has_mail, :default_image_size, :comment_threshold, :always_resize_images, :favorite_tags, :blacklisted_tags, :recent_tags, :enable_privacy_mode, :enable_post_navigation, :new_post_navigation_layout, :enable_sequential_post_navigation, :hide_deleted_posts, :per_page, :style_usernames, :enable_auto_complete]
+      super + [:password_hash, :bcrypt_password_hash, :email, :email_verification_key, :time_zone, :updated_at, :receive_email_notifications, :last_logged_in_at, :last_forum_read_at, :has_mail, :default_image_size, :comment_threshold, :always_resize_images, :favorite_tags, :blacklisted_tags, :recent_tags, :enable_privacy_mode, :enable_post_navigation, :new_post_navigation_layout, :enable_sequential_post_navigation, :hide_deleted_posts, :per_page, :style_usernames, :enable_auto_complete, :custom_style]
     end
 
     def serializable_hash(options = {})

app/views/layouts/default.html.erb

@@ -19,6 +19,9 @@
   <meta name="enable-auto-complete" content="<%= CurrentUser.user.enable_auto_complete %>">
   <%= auto_discovery_link_tag :atom, posts_path(:format => "atom", :tags => params[:tags]) %>
   <%= stylesheet_link_tag "application", :media => "screen" %>
+  <style>
+    <%= CurrentUser.user.custom_style %>
+  </style>
   <%= javascript_include_tag "application" %>
   <%= raw Danbooru.config.custom_html_header_content %>
   <%= yield :html_header %>

app/views/users/edit.html.erb

@@ -54,6 +54,7 @@
           <textarea id="user_favorite_tags" class="text optional" rows="5" name="user[favorite_tags]" cols="40"><%= raw @user.favorite_tags %></textarea>
           <span class="hint">A list of tags that you use often. They will appear when using the list of Related Tags.</span>
         </div>
+        <%= f.input :custom_style, :label => "Custom <a href='http://en.wikipedia.org/wiki/Cascading_Style_Sheets'>CSS</a> style" %>
       </fieldset>
 
       <fieldset id="change-password-section">

db/migrate/20130712162600_add_custom_style_to_users.rb

@@ -0,0 +1,5 @@
+class AddCustomStyleToUsers < ActiveRecord::Migration
+  def change
+    add_column :users, :custom_style, :text
+  end
+end