FIX: validate user website

app/models/user_profile.rb

@@ -2,6 +2,7 @@ class UserProfile < ActiveRecord::Base
   belongs_to :user, inverse_of: :user_profile
 
   validates :bio_raw, length: { maximum: 3000 }
+  validates :website, format: { with: /(^$)|(^(http|https):\/\/[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,9}(([0-9]{1,5})?\/.*)?$)/ix }, allow_blank: true
   validates :user, presence: true
   before_save :cook
   after_save :trigger_badges

app/services/user_updater.rb

@@ -104,6 +104,7 @@ class UserUpdater
   attr_reader :user, :guardian
 
   def format_url(website)
+    return nil if website.blank?
     website =~ /^http/ ? website : "http://#{website}"
   end
 end

spec/models/user_profile_spec.rb

@@ -37,6 +37,18 @@ describe UserProfile do
       expect(user_profile).not_to be_valid
     end
 
+    it "doesn't support invalid website" do
+      user_profile = Fabricate.build(:user_profile, website: "http://https://google.com")
+      user_profile.user = Fabricate.build(:user)
+      expect(user_profile).not_to be_valid
+    end
+
+    it "supports valid website" do
+      user_profile = Fabricate.build(:user_profile, website: "https://google.com")
+      user_profile.user = Fabricate.build(:user)
+      expect(user_profile.valid?).to be true
+    end
+
     describe 'after save' do
       let(:user) { Fabricate(:user) }