More CSS simplification

Edit domain names, updates credentials and virtuals
Model domain tests for length and valid characters

app/controllers/domains_controller.rb

@@ -36,8 +36,21 @@ class DomainsController < ApplicationController
 
   # PATCH/PUT /domains/1 or /domains/1.json
   def update
+    pre_domain_name = @domain.domain
     respond_to do |format|
       if @domain.update(domain_params)
+        # now we need to update the credentials and virtuals
+
+        @domain.credentials.each do |credential|
+          credential.email.sub! pre_domain_name, @domain.domain
+          credential.save
+        end
+
+        @domain.virtuals.each do |virtual|
+          virtual.email.sub! pre_domain_name, @domain.domain
+          virtual.save
+        end
+
         format.html { redirect_to domain_url(@domain), notice: "Domain was successfully updated." }
         format.json { render :show, status: :ok, location: @domain }
       else