rails user modifies email

modify_emails.html.erb

# gem 'ckeditor_rails' # from https://github.com/tsechingho/ckeditor-rails

# allow modifying existing template
<textarea name="modified_email" class="ckeditor">
  <%= File.read "#{Rails.root.to_s}/app/views/user_mailer/do_email.html.erb"%>
</textarea>

<%= javascript_include_tag "ckeditor-jquery" %>
<script type="text/javascript">
  $('.ckeditor').ckeditor({
    height: "800px",
    allowedContent: true,
    toolbar: [
        { name: 'document',    items : [ 'Source', '-', 'Undo','Redo', '-','SpellChecker'] },
        { name: 'basicstyles', items : [ '-', 'Bold','Italic','Underline'] },
        { name: 'colors',      items : [ '-', 'TextColor','BGColor' ] },
        { name: 'styles',      items : [ '-', 'Styles','Format','Font','FontSize' ] },
        { name: 'tools',       items : [ '-', 'Maximize' ] }
      ]
    });

  setTimeout(function(){
    $("a.cke_button").attr("style", "padding:8px;");
    $(".cke_chrome").attr("style", "width: 76% !important; overflow: hidden;");
  }, 500);
</script>

# in your mailer

  def do_email modified_contents
    body = ActionView::Base.new.render :inline => CGI.unescapeHTML(modified_contents), :locals => { :token => token }
    # you can have assigns as well

    mail :to => recipients,
         :subject => "Do Email",
         :content_type => "text/html",
         :body => body
  end