diff --git a/Gemfile b/Gemfile
index dd4ef8f..dd3cfbd 100644
--- a/Gemfile
+++ b/Gemfile
@@ -24,6 +24,9 @@ gem 'cancancan'
 # Haml for templating!
 gem "haml-rails", "~> 0.9"
 
+# Friendly ids!
+gem 'friendly_id', '~> 5.1.0'
+
 # Pure for css
 gem 'purecss-rails'
 # Use datatables
diff --git a/Gemfile.lock b/Gemfile.lock
index 284d8f7..9f81a45 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -107,6 +107,8 @@ GEM
       i18n (~> 0.5)
     faraday (0.9.1)
       multipart-post (>= 1.2, < 3)
+    friendly_id (5.1.0)
+      activerecord (>= 4.0.0)
     globalid (0.3.6)
       activesupport (>= 4.1.0)
     haml (4.0.7)
@@ -299,6 +301,7 @@ DEPENDENCIES
   devise
   factory_girl_rails
   faker
+  friendly_id (~> 5.1.0)
   haml-rails (~> 0.9)
   high_voltage (~> 2.4.0)
   jbuilder (~> 2.0)
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 0b697fd..fa00f9f 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -4,7 +4,10 @@ class ApplicationController < ActionController::Base
   protect_from_forgery with: :exception
 
   rescue_from CanCan::AccessDenied do |exception|
-    redirect_to root_url, alert: exception.message
+    respond_to do |format|
+      format.json { render nothing: true, status: :forbidden }
+      format.html { redirect_to root_url, alert: exception.message }
+    end
   end
 
   def authenticate_user_or_client!
diff --git a/app/controllers/concerns/data_table.rb b/app/controllers/concerns/data_table.rb
index ff2b31c..b98d681 100644
--- a/app/controllers/concerns/data_table.rb
+++ b/app/controllers/concerns/data_table.rb
@@ -86,7 +86,7 @@ class DataTable
       }
       if type == 'number-range'
         h[:lower], h[:upper] = value.split('~').map do |euros|
-          (euros.to_f * 100).to_i rescue nil
+          (Float(euros) * 100).to_i rescue nil
         end
       elsif type == 'date-range'
         h[:lower], h[:upper] = value.split('~').map do |string|
diff --git a/app/models/user.rb b/app/models/user.rb
index c5886cf..54cfebb 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -11,6 +11,8 @@
 #
 
 class User < ActiveRecord::Base
+  include FriendlyId
+  friendly_id :name, use: :finders
   devise :timeoutable, :omniauthable, :omniauth_providers => [:zeuswpi]
   has_many :incoming_transactions,
     class_name: 'Transaction', foreign_key: 'creditor_id'
diff --git a/app/views/users/show.html.haml b/app/views/users/show.html.haml
index 9da573b..9ecf696 100644
--- a/app/views/users/show.html.haml
+++ b/app/views/users/show.html.haml
@@ -76,7 +76,7 @@
         {
           targets: 1,
           render: function(data, type, full, meta) {
-            return data/100;
+            return (data/100).toFixed(2);
           }
         }
       ]