django - Sending many json objects with one object json -

i'm using django-restful-framework , django 1.5

i having trouble post. hard explain let start example.

models.py

class project(models.model):     project_name = models.charfield(max_length=100)     project_description = models.charfield(max_length=100)   class task(models.model):     project = models.foreignkey(project, related_name='task')     task_title = models.charfield(max_length=100) 

serializer.py

class taskserializer(serializers.modelserializer):     class meta:         model = task         fields = ('task_title')  class projectserializer(serializers.modelserializer):     task = taskserializer(many=true)      class meta:         model = album         fields = ('project_name', 'project_description', 'task') 

when this, viewsets.modelviewset in django-rest-framework displays text field task :

but gives me error when posting without filling in task field :

add() argument after * must sequence, not nonetype 

is there nice way connect project task can create project without task, , create many tasks want inside project? /project , /task display same form though there different fields in model.

i'm using django-rest-framework default view test api now.

p.s i'm trying write clear possible, please let me know if i'm missing better help.

on django rest page, says:

note nested relationships read-only. 

"read only" make posting little difficult ;)