Django: ModelFormSet saving first entry only -

update:

the issue seemed in coding django-formset. processing inline formset , not model formset. answer below correct. thanks!

i working model formset intermediate model. using django-formset js add additional formset fields on template. works ok except when go save formset first entry being saved db. first entry saved , assigned correctly after disappear. not throwing errors not sure going wrong. thanks!

the model

class staffassignment(models.model):     study = models.foreignkey(study, related_name='study_set', null=true, on_delete=models.cascade)     staff = models.foreignkey('account.userprofile', related_name='assigned_to_set', null=true, on_delete=models.cascade)     role = models.charfield(max_length=100, null=true)     assigned_on = models.datetimefield(auto_now_add=true)      class meta:         ordering = ('-role',)      def __str__(self):         return '{} assigned {}'.format(self.staff, self.study) 

the form:

class addstaff(forms.modelform):     model = staffassignment     fields = ('staff',)      def __init__(self, *args, **kwargs):         super(addstaff, self).__init__(*args, **kwargs)         field in self.fields:             self.fields[field].widget.attrs.update({'class': 'form-control'}) 

the view:

def add_staff(request, study_slug):     study = get_object_or_404(study, slug=study_slug)     staff_formset = modelformset_factory(staffassignment, form=addstaff, fields=('staff',), can_delete=true)     if request.method == 'post':         stafflist = staff_formset(request.post, request.files)         if stafflist.is_valid():             assignment in stafflist:                 assigned = assignment.save(commit=false)                 assigned.study = study                 assigned.role = assigned.staff.job_title                 assigned.save()             return httpresponseredirect(reverse('studies:studydashboard'))         else:             httpresponse('something messed up')     else:         stafflist = staff_formset(queryset=staffassignment.objects.none())         return render(request, 'studies/addstaff.html', {'stafflist': stafflist, 'study': study}) 

the template:

    <form action="{% url 'studies:addstaff' study.slug %}" method="post" enctype="multipart/form-data">     {% csrf_token %}     <div class="box-body">             {% list in stafflist %}                 <div class="form-group" id="formset">                 {% if list.instance.pk %}{{ list.delete }}{% endif %}                     {{ list.staff }}                     {% if list.staff.errors %}                         {% error in list.staff.errors %}                             {{ error|escape }}                         {% endfor %}                     {% endif %}                 </div>             {% endfor %}             {{ stafflist.management_form }}     </div>     <div class="box-footer">         <button type="submit" class="btn btn-primary">submit</button>     </div>     </form> 

you not including primary key field in template, required docs. add

{% list in stafflist %}     {{ list.pk }}     ... {% endfor %}