profiles: block rework and tests

profiles/serializers/BlockSerializer.py

@@ -0,0 +1,10 @@
+from rest_framework.serializers import ModelSerializer
+
+from ..models import BlockModel
+
+
+class BlockSerializer(ModelSerializer):
+
+    class Meta:
+        model = BlockModel
+        fields = ['blocked']

profiles/serializers/ProfileSerializer.py

@@ -0,0 +1,29 @@
+from django.conf import settings
+from django.utils.translation import gettext as _
+
+from rest_framework import serializers
+
+from ..models import ProfileModel
+
+
+class ProfileSerializer(serializers.ModelSerializer):
+
+    username = serializers.ReadOnlyField(source='user.username')
+    avatar = serializers.ImageField(required=False)
+
+    class Meta:
+        model = ProfileModel
+        fields = ["username", "avatar", "user_id"]
+
+    def validate_avatar(self, value):
+        '''
+        Check that the image is not too large
+        '''
+        if value.size > settings.PROFILE_PICTURE_MAX_SIZE:
+            raise serializers.ValidationError(_('Image is too large.'))
+        return value
+
+    def to_representation(self, instance):
+        data = super().to_representation(instance)
+        data['avatar'] = data['avatar'][data['avatar'].find('/static/'):]
+        return data