from sorl.thumbnail.shortcuts import get_thumbnail


class Matter(ProjectReferenceNumberMixin, RedirectMixin, TimeStampedModel):
    image = ImageField(upload_to='matters', null=True, blank=True)





class MatterSerializer(RefNoSerializerMixin, ReprSerializerMixin, serializers.ModelSerializer):
    class Meta:
        model = Matter
        fields = ('thumbnail_url', 'image_url')


    thumbnail_url = serializers.SerializerMethodField('get_thumbnail_url')
    image_url = serializers.SerializerMethodField('get_thumbnail_url')

    def get_thumbnail_url(self, obj):
        if obj.image:
            return get_thumbnail(obj.image, "144x104", crop='center').url
        else:
            return urljoin(settings.STATIC_URL, 'img/placeholder-144x104.jpg')

    def get_image_url(self, obj):
        if obj.image:
            return get_thumbnail(obj.image, "1440x1040").url
        else:
            return urljoin(settings.STATIC_URL, 'img/placeholder-1440x1040.jpg')