check account create and email is not empty

app/controllers/discourse_donations/charges_controller.rb

@@ -7,7 +7,7 @@ module DiscourseDonations
     skip_before_filter :verify_authenticity_token, only: [:create]
 
     def create
-      if email.nil? || email.empty?
+      if create_account && (email.nil? || email.empty?)
         response = {'message' => 'Please enter your email address'}
       elsif create_account && params[:username].nil?
         response = {'message' => 'Please enter a username'}
@@ -36,7 +36,7 @@ module DiscourseDonations
     private
 
     def create_account
-      params[:create_account]
+      params[:create_account] == 'true'
     end
 
     def email

spec/controllers/discourse_donations/charges_controller_spec.rb

@@ -23,7 +23,7 @@ module DiscourseDonations
     end
 
     it 'responds ok when the email is empty' do
-      post :create, { create_account: 'false' }
+      post :create, { create_account: 'true' }
       expect(body['message']).to eq('Please enter your email address')
       expect(response).to have_http_status(200)
     end
@@ -34,10 +34,10 @@ module DiscourseDonations
       expect(response).to have_http_status(200)
     end
 
-    it 'responds ok for logged in user' do
+    it 'does not expect a username or email if accounts are not being created' do
       current_user = log_in(:coding_horror)
-      post :create
-      expect(body['message']).to eq(body['outcome']['seller_message'])
+      post :create, { create_account: 'false' }
+      expect(body['message']).to eq('Payment complete.')
       expect(response).to have_http_status(200)
     end
   end