use templates to render newsletter

newsletter/models.py

@@ -15,8 +15,10 @@ from django.db import models
 from django.core.urlresolvers import reverse
 
 from django.template import loader, Context
+from django.template.loader import render_to_string
 from django.conf import settings
 
+from django.utils.safestring import mark_safe
 from django.utils.translation import ugettext
 from django.utils.translation import ugettext_lazy as _
 from django.core.mail import send_mail
@@ -81,12 +83,13 @@ class Newsletter(models.Model):
 
         h2t = html2text.HTML2Text()
         h2t.unicode_snob = True
-        html = self.text.encode('utf-8')
-        if settings.NEWSLETTER_STYLE:
-            html += '''\n<style type="text/css">\n%s\n</style>''' % settings.NEWSLETTER_STYLE
+        context = {
+            'text_part': mark_safe(h2t.handle(self.text)),
+            'html_part': mark_safe(self.text),
+        }
 
-        part1 = MIMEText(h2t.handle(self.text).encode('utf-8'), 'plain', _charset='utf-8')
-        part2 = MIMEText(html, 'html', _charset='utf-8')
+        part1 = MIMEText(render_to_string('newsletter/email_body.txt', context), 'plain', _charset='utf-8')
+        part2 = MIMEText(render_to_string('newsletter/email_body.html', context), 'html', _charset='utf-8')
 
         msg.attach(part1)
         msg.attach(part2)

newsletter/templates/newsletter/email_body.html

+{{html_part}}

newsletter/templates/newsletter/email_body.txt

+{{text_part}}