Save date of last call for membership fee email sent for each member.

And use it to not send new email if last was to recent (3 weeks)

coin/members/admin.py

@@ -59,7 +59,8 @@ class MemberAdmin(UserAdmin):
         ('Authentification', {'fields': (
             ('username', 'password'))}),
         ('Permissions', {'fields': (
-            ('is_active', 'is_staff', 'is_superuser'))})
+            ('is_active', 'is_staff', 'is_superuser'))}),
+        (None, {'fields':('date_last_call_for_membership_fees_email',)})
     )
 
     add_fieldsets = (

coin/members/migrations/0012_member_date_last_call_for_membership_fees_email.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('members', '0011_member_comments'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='member',
+            name='date_last_call_for_membership_fees_email',
+            field=models.DateTimeField(null=True, verbose_name='Date du dernier email de relance de cotisation envoy\xe9', blank=True),
+            preserve_default=True,
+        ),
+    ]

coin/members/models.py

@@ -4,6 +4,7 @@ from __future__ import unicode_literals
 import ldapdb.models
 import unicodedata
 import datetime
+
 from django.db import models
 from django.db.models import Q
 from django.db.models.signals import pre_save
@@ -12,6 +13,7 @@ from django.contrib.auth.models import AbstractUser
 from django.conf import settings
 from django.core.validators import RegexValidator
 from django.core.exceptions import ValidationError
+from django.utils import timezone
 from ldapdb.models.fields import CharField, IntegerField, ListField
 
 from coin.offers.models import OfferSubscription
@@ -70,6 +72,9 @@ class Member(CoinLdapSyncMixin, AbstractUser):
                                 help_text="Commentaires libres (informations"
                                 " spécifiques concernant l'adhésion,"
                                 " raison du départ, etc)")
+    date_last_call_for_membership_fees_email = models.DateTimeField(null=True,
+                        blank=True,
+                        verbose_name="Date du dernier email de relance de cotisation envoyé")
 
     # Following fields are managed by the parent class AbstractUser :
     # username, first_name, last_name, email
@@ -249,20 +254,33 @@ class Member(CoinLdapSyncMixin, AbstractUser):
         from coin.isp_database.models import ISPInfo
 
         utils.send_templated_email(to=self.email,
-                                   subject_template='members/emails/welcome_email_subject.txt',
-                                   body_template='members/emails/welcome_email.html',
-                                   context={'member': self, 'branding':ISPInfo.objects.first()})
+                   subject_template='members/emails/welcome_email_subject.txt',
+                   body_template='members/emails/welcome_email.html',
+                   context={'member': self, 'branding':ISPInfo.objects.first()})
 
     def send_call_for_membership_fees_email(self):
         """ Envoi le courriel d'appel à cotisation du membre """
+        from dateutil.relativedelta import relativedelta
         from coin.isp_database.models import ISPInfo
 
-        utils.send_templated_email(to=self.email,
-                                   subject_template='members/emails/call_for_membership_fees_subject.txt',
-                                   body_template='members/emails/call_for_membership_fees.html',
-                                   context={'member': self, 'branding':ISPInfo.objects.first(),
-                                            'membership_info_url': settings.MEMBER_MEMBERSHIP_INFO_URL,
-                                            'today': datetime.date.today})       
+        # Si le dernier courriel de relance a été envoyé il y a moins de trois
+        # semaines, n'envoi pas un nouveau courriel
+        if (not self.date_last_call_for_membership_fees_email
+            or (self.date_last_call_for_membership_fees_email
+               <= timezone.now() + relativedelta(weeks=-3))):
+            utils.send_templated_email(to=self.email,
+               subject_template='members/emails/call_for_membership_fees_subject.txt',
+               body_template='members/emails/call_for_membership_fees.html',
+               context={'member': self, 'branding':ISPInfo.objects.first(),
+                        'membership_info_url': settings.MEMBER_MEMBERSHIP_INFO_URL,
+                        'today': datetime.date.today})
+            # Sauvegarde en base la date du dernier envoi de mail de relance
+            self.date_last_call_for_membership_fees_email = timezone.now()
+            self.save()
+            return True
+
+        return False
+
 
     class Meta:
         verbose_name = 'membre'