old_contents: from bluebottle.bluebottle_drf2.serializers import ImageSerializer
  from bluebottle.projects.models import PartnerOrganization
  from bluebottle.projects.serializers import ProjectSerializer, ProjectPreviewSerializer
  from rest_framework import serializers
  
  
  class PartnerOrganizationSerializer(serializers.ModelSerializer):
  
      id = serializers.CharField(source='slug', read_only=True)
      projects = ProjectPreviewSerializer(source='projects')
      description = serializers.CharField(source='description')
      image = ImageSerializer(required=False)
  
      class Meta:
          model = PartnerOrganization
          fields = ('id', 'name', 'projects', 'description', 'image')
  
  
new_contents: from bluebottle.bluebottle_drf2.serializers import ImageSerializer
  from bluebottle.projects.models import PartnerOrganization
  from bluebottle.bb_projects.serializers import ProjectPreviewSerializer
  from rest_framework import serializers
  
  
  class PartnerOrganizationSerializer(serializers.ModelSerializer):
  
      id = serializers.CharField(source='slug', read_only=True)
      projects = ProjectPreviewSerializer(source='projects')
      description = serializers.CharField(source='description')
      image = ImageSerializer(required=False)
  
      class Meta:
          model = PartnerOrganization
          fields = ('id', 'name', 'projects', 'description', 'image')
  
  
subject: Use a simpler serializer that does not require people_requested/people_registered annotations / fields