#Feat: Add fields groups and default_class to ProfessorMessage model

courses/models.py

@@ -648,8 +648,33 @@ class ProfessorMessage(models.Model):
         verbose_name=_('Course'),
         null=True,
     )
+    groups = models.ManyToManyField(
+        Group,
+        verbose_name=_('groups'),
+        blank=True,
+        help_text=_('The Groups that can have access to this forum. If empty, there are no group restrictions.'),
+        related_name="courses",
+    )
+    default_class = models.ManyToManyField(
+        'Class',
+        models.SET_NULL,
+        verbose_name=_('Default Class'),
+        related_name='default_course',
+        null=True,
+        blank=True,
+    )
+    
 
     def send(self):
+        # bcc = list with all destinataries
+        # batch = bcc.split( constant )
+        # for each batch -> 
+            # send message
+            # save status
+            # if it goes wrong
+            # split batch by 2 and try it again (binary search)
+        # check if everything is sent
+        
         bcc = [u.email for u in self.users.all() if u.is_active and re.match(r"(^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$)", u.email)]
         try:
             et = EmailTemplate.objects.get(name='professor-message')

courses/serializers.py

@@ -123,6 +123,7 @@ class ProfessorMessageSerializer(serializers.ModelSerializer):
     course_slug = serializers.SerializerMethodField(read_only=True)
     course_name = serializers.SerializerMethodField(read_only=True)
     is_read = serializers.SerializerMethodField(read_only=True)
+    groups = self.context['request'].data.get('groups', None)
 
     class Meta:
         model = ProfessorMessage