members/admin: make email and phone number links

jdav_web/members/admin.py

@@ -207,7 +207,7 @@ class MemberAdmin(CommonAdminMixin, admin.ModelAdmin):
         ),
     ]
     list_display = ('name_text_or_link', 'birth_date', 'age', 'get_group',
-                    'email', 'phone_number',
+                    'email_mailto_link', 'phone_number_tel_link',
                     'comments', 'activity_score')
     search_fields = ('prename', 'lastname', 'email')
     list_filter = ('group', )

jdav_web/members/models.py

@@ -9,6 +9,7 @@ from django.db.models import TextField, ManyToManyField, ForeignKey, Count,\
     Sum, Case, Q, F, When, Value, IntegerField, Subquery, OuterRef
 from django.utils.translation import gettext_lazy as _
 from django.utils import timezone
+from django.utils.html import format_html
 from django.urls import reverse
 from django.contrib.contenttypes.fields import GenericForeignKey, GenericRelation
 from django.contrib.contenttypes.models import ContentType
@@ -125,6 +126,18 @@ class Contact(CommonModel):
         """Returning whole name (prename + lastname)"""
         return "{0} {1}".format(self.prename, self.lastname)
 
+    def phone_number_tel_link(self):
+        """Returns the phone number as tel link."""
+        return format_html('<a href="tel:{tel}">{tel}</a>'.format(tel=self.phone_number))
+    phone_number_tel_link.short_description = _('phone number')
+    phone_number_tel_link.admin_order_field = 'phone_number'
+
+    def email_mailto_link(self):
+        """Returns the emails as a mailto link."""
+        return format_html('<a href="mailto:{email}">{email}</a>'.format(email=self.email))
+    email_mailto_link.short_description = 'Email'
+    email_mailto_link.admin_order_field = 'email'
+
     @property
     def email_fields(self):
         """Returns all tuples of emails and confirmation data related to this contact.