Add a "date_sent" field to detect when the mail was sent

Closes #43

Author: sastred

demo/demo.sqlite

@@ -29,8 +29,8 @@ def message_link(self, obj):
     message_link.allow_tags = True
     message_link.short_description = u'Show'
 
-    list_display = ('from_address', 'to_address', 'subject', 'date_created', 'message_link')
-    list_filter = ('date_created',)
+    list_display = ('from_address', 'to_address', 'subject', 'date_created', 'date_sent', 'message_link')
+    list_filter = ('date_created', 'date_sent')
     search_fields = ('to_address', 'subject', 'from_address',
                      'encoded_message',)
     date_hierarchy = 'date_created'

django_yubin/admin.py

@@ -9,6 +9,7 @@
 
 """
 from django.utils.encoding import smart_str
+from django.utils.timezone import now
 from django_yubin import constants, models, settings
 from lockfile import FileLock, AlreadyLocked, LockTimeout
 from socket import error as SocketError
@@ -211,6 +212,8 @@ def send_queued_message(queued_message, smtp_connection=None, blacklist=None,
                 message.from_address,
                 [message.to_address],
                 smart_str(message.encoded_message).encode('utf-8'))
+            queued_message.message.date_sent = now()
+            queued_message.message.save()
             queued_message.delete()
             result = constants.RESULT_SENT
         except (SocketError, smtplib.SMTPSenderRefused,

django_yubin/engine.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.0.6 on 2018-06-27 14:12
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('django_yubin', '0003_auto_20171201_1506'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='message',
+            name='date_sent',
+            field=models.DateTimeField(blank=True, null=True),
+        ),
+    ]

django_yubin/migrations/0004_message_date_sent.py

@@ -41,6 +41,7 @@ class Message(models.Model):
 
     encoded_message = models.TextField()
     date_created = models.DateTimeField(default=now)
+    date_sent = models.DateTimeField(null=True, blank=True)
 
     class Meta:
         ordering = ('date_created',)