Make recaptcha optional on signup page.

app/controllers/users_controller.rb

@@ -44,7 +44,7 @@ class UsersController < ApplicationController
   def create
     @user = User.new(params[:user], :as => CurrentUser.role)
     @user.last_ip_addr = request.remote_ip
-    if verify_recaptcha(model: @user)
+    if !Danbooru.config.enable_recaptcha? || verify_recaptcha(model: @user)
       @user.save
       if @user.errors.empty?
         session[:user_id] = @user.id

app/views/users/new.html.erb

@@ -15,7 +15,11 @@
         <%= f.input :password %>
         <%= f.input :password_confirmation %>
 
-        <%= invisible_recaptcha_tags callback: 'submitInvisibleRecaptchaForm', text: 'Sign up' %>
+        <% if Danbooru.config.enable_recaptcha? %>
+          <%= invisible_recaptcha_tags callback: 'submitInvisibleRecaptchaForm', text: 'Sign up' %>
+        <% else %>
+          <%= f.submit "Sign up", :data => { :disable_with => "Signing up..." } %>
+        <% end %>
       <% end %>
     </div>
   </div>

config/danbooru_default_config.rb

@@ -619,6 +619,18 @@ module Danbooru
 
     def aws_sqs_cropper_url
     end
+
+    # Use a recaptcha on the signup page to protect against spambots creating new accounts.
+    # https://developers.google.com/recaptcha/intro
+    def enable_recaptcha?
+      Rails.env.production? && Danbooru.config.recaptcha_site_key.present? && Danbooru.config.recaptcha_secret_key.present?
+    end
+
+    def recaptcha_site_key
+    end
+
+    def recaptcha_secret_key
+    end
   end
 
   class EnvironmentConfiguration

config/initializers/recaptcha.rb

@@ -0,0 +1,5 @@
+Recaptcha.configure do |config|
+  config.site_key   = Danbooru.config.recaptcha_site_key
+  config.secret_key = Danbooru.config.recaptcha_secret_key
+  # config.proxy = "http://example.com"
+end

test/functional/users_controller_test.rb

@@ -76,11 +76,7 @@ class UsersControllerTest < ActionController::TestCase
 
     context "new action" do
       setup do
-        ENV["RECAPTCHA_SITE_KEY"] = "x"
+        Danbooru.config.stubs(:enable_recaptcha?).returns(false)
-      end
-
-      teardown do
-        ENV["RECAPTCHA_SITE_KEY"] = nil
       end
       
       should "render" do