#1: Accept only emails in author field

app/models/custom_workflow.rb

@@ -15,6 +15,7 @@ class CustomWorkflow < ActiveRecord::Base
 
   validates_presence_of :name
   validates_uniqueness_of :name, :case_sensitive => false
+  validates_format_of :author, :with => /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i, :allow_blank => true
   validate :validate_syntax
 
   default_scope { order(:position => :asc) }

app/views/custom_workflows/index.html.erb

@@ -24,7 +24,7 @@
     <tr class="<%= cycle("odd", "even") %>">
       <td class="name"><%= link_to(workflow.name, edit_custom_workflow_path(workflow)) %></td>
       <td class="description"><%= textilizable(workflow.description) %></td>
-      <td class="author"><%= workflow.author %></td>
+      <td class="author"><%= mail_to workflow.author if workflow.author.present? %></td>
       <td>
         <% if workflow.is_for_all? %>
           <%= l(:field_enabled_for_all_projects) %>

config/locales/en.yml

@@ -16,7 +16,7 @@ en:
   field_before_save: "Workflow script executable before saving the issue"
   field_is_enabled: "Enabled"
   field_enabled_for_all_projects: "Enabled for all projects"
-  field_custom_workflow_author: "Custom workflow's author"
+  field_custom_workflow_author: "Author's e-mail"
   field_custom_workflow_file: "Select the XML file previously exported process"
   field_custom_workflow:
     script: "Workflow script"

config/locales/ru.yml

@@ -16,7 +16,7 @@ ru:
   field_before_save: "Сценарий выполняемый перед сохранением задачи"
   field_is_enabled: "Разрешено"
   field_enabled_for_all_projects: "Разрешен для всех проектов"
-  field_custom_workflow_author: "Автор рабочего процесса"
+  field_custom_workflow_author: "E-Mail адрес автора"
   field_custom_workflow_file: "Выберите XML файл ранее экспортированного процесса"
   field_custom_workflow:
     script: "Сценарий"