Small refactor in messaging.

[wolnelektury.git] / src / api / fields.py

diff --git a/src/api/fields.py b/src/api/fields.py
index 4bb44dc..d1f9da4 100644 (file)
--- a/src/api/fields.py
+++ b/src/api/fields.py
@@ -1,5 +1,10 @@
+# This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+#
 from rest_framework import serializers
-from django.core.urlresolvers import reverse
+from sorl.thumbnail import default
+from django.urls import reverse
+from club.models import Membership
 
 
 class AbsoluteURLField(serializers.ReadOnlyField):
@@ -12,7 +17,7 @@ class AbsoluteURLField(serializers.ReadOnlyField):
         if view_args:
             for v in view_args:
                 fields = v.split(':', 1)
-                self.view_args[fields[0]] = fields[1] if len(fields)>1 else fields[0]
+                self.view_args[fields[0]] = fields[1] if len(fields) > 1 else fields[0]
 
     def to_representation(self, value):
         if self.view_name is not None:
@@ -24,7 +29,7 @@ class AbsoluteURLField(serializers.ReadOnlyField):
         return self.context['request'].build_absolute_uri(value)
 
 
-class LegacyMixin(object):
+class LegacyMixin:
     def to_representation(self, value):
         value = super(LegacyMixin, self).to_representation(value)
         non_null_fields = getattr(getattr(self, 'Meta', None), 'legacy_non_null_fields', [])
@@ -32,3 +37,23 @@ class LegacyMixin(object):
             if field in value and value[field] is None:
                 value[field] = ''
         return value
+
+
+class UserPremiumField(serializers.ReadOnlyField):
+    def __init__(self, *args, **kwargs):
+        super(UserPremiumField, self).__init__(*args, source='*', **kwargs)
+
+    def to_representation(self, value):
+        return Membership.is_active_for(value)
+
+
+class ThumbnailField(serializers.FileField):
+    def __init__(self, geometry, *args, **kwargs):
+        self.geometry = geometry
+        super(ThumbnailField, self).__init__(*args, **kwargs)
+
+    def to_representation(self, value):
+        if value:
+            return super(ThumbnailField, self).to_representation(
+                default.backend.get_thumbnail(value, self.geometry)
+            )