Django Formset Not Cleaning/Saving Properly - django

Question

I'm using inlineformset_factory to create a formset. The parent object is a featured set and the child objects are featured items. I'm using the 'django-dynamic-formset' jQuery plugin on the front end to add/remove formset forms dynamically.
While each form in the formset is getting submitted with the proper data as expected, cleaned_data only contains the form's id.
View:
#login_required
#csrf_protect
def edit_featured_set(request, fset_id):
'''
Edit a featured set and its items
'''
c = {}
c.update(csrf(request))
# get existing featured set for this id (if exists)
if fset_id and int(fset_id) > 0:
try:
fset_obj = Featureditemset.objects.get(id=fset_id)
except Featureditemset.DoesNotExist:
# bad or no id passed
return HttpResponse('ObjectDoesNotExist')
else:
# get new featured set object
fset_obj = Featureditemset(id = get_next_auto_inc(Featureditemset))
# define formset to work with featured items
FeaturedItemFormSet = inlineformset_factory(Featureditemset, Featureditem, extra=1, form=FeatureditemEditForm)
if request.method == 'POST':
form = FeatureditemsetEditForm(request.POST, request.FILES, instance=fset_obj, prefix='set')
if form.is_valid():
featured_item_formset = FeaturedItemFormSet(request.POST, request.FILES, instance=fset_obj, prefix='item')
if featured_item_formset.is_valid():
# save form
form.save()
# save formset
print 'Formset: %s' % str(featured_item_formset)
print 'cleaned_data: %s' % featured_item_formset.cleaned_data
featured_item_formset.save()
return HttpResponse('valid')
else:
form = FeatureditemsetEditForm(instance=fset_obj, prefix='set')
featured_item_formset = FeaturedItemFormSet(instance=fset_obj, prefix='item')
c['form'] = form
c['formset'] = featured_item_formset
return render_to_response('admin/edit_featured.html', c, context_instance = RequestContext(request))
Forms:
class FeatureditemEditForm(ModelForm):
class Meta:
model = Featureditem
fields = ('id','img', 'name', 'folio')
class FeatureditemsetEditForm(ModelForm):
class Meta:
model = Featureditemset
fields = ('name', 'application')
Models:
class Featureditemset(models.Model):
id = models.BigIntegerField(primary_key=True, db_column='FEATUREDITEMSET_ID')
application = models.ForeignKey(Application, null=True, db_column='FEATUREDITEMSET_APPLICATION_ID', blank=True)
htmlcontent = models.TextField(db_column='FEATUREDITEMSET_HTMLCONTENT', blank=True)
modified = models.DateTimeField(db_column='FEATUREDITEMSET_MODIFIED', auto_now=True)
viewer = models.ForeignKey(Viewer, null=True, db_column='FEATUREDITEMSET_VIEWER', blank=True)
name = models.CharField(max_length=192, db_column='FEATUREDITEMSET_NAME', blank=True)
class Meta:
db_table = u'featureditemset'
def __unicode__(self):
return str(self.name)
class Featureditem(models.Model):
id = models.BigIntegerField(db_column='FEATURED_ITEM_ID', primary_key=True)
img = models.FileField(upload_to='featured', db_column='FEATURED_ITEM_IMG_URL', blank=True)
alt_title = models.CharField(max_length=768, db_column='FEATURED_ITEM_ALT_TITLE', blank=True)
modified = models.DateTimeField(db_column='FEATURED_ITEM_MODIFIED', auto_now=True)
folio = models.ForeignKey(Folio, db_column='FEATURED_ITEM_FOLIO_ID', blank=False)
app = models.ForeignKey(Application, null=True, db_column='FEATURED_ITEM_APP_ID', blank=True)
name = models.CharField(max_length=192, db_column='FEATURED_ITEM_NAME', blank=True)
featureditemset = models.ForeignKey(Featureditemset, null=True, db_column='FEATUREDITEM_FEATUREDITEMSET_ID', blank=True)
def __unicode__(self):
return self.name
class Meta:
db_table = u'featureditem'
Output to console:
Formset: <input type="hidden" name="item-TOTAL_FORMS" value="1" id="id_item-TOTAL_FORMS" /><input type="hidden" name="item-INITIAL_FORMS" value="1" id="id_item-INITIAL_FORMS" /><input type="hidden" name="item-MAX_NUM_FORMS" id="id_item-MAX_NUM_FORMS" />
<tr><th><label for="id_item-0-id">Id:</label></th><td><input type="text" name="item-0-id" value="5" id="id_item-0-id" /></td></tr>
<tr><th><label for="id_item-0-img">Featured Image:</label></th><td><input type="file" name="item-0-img" id="id_item-0-img" /></td></tr>
<tr><th><label for="id_item-0-name">Name:</label></th><td><input id="id_item-0-name" type="text" name="item-0-name" value="item1" maxlength="192" /></td></tr>
<tr><th><label for="id_item-0-folio">Folio:</label></th><td><select name="item-0-folio" id="id_item-0-folio">
<option value="1" selected="selected">0000054220110900000025</option>
<option value="2">com.maned.kwmultitest</option>
</select></td></tr>
<tr><th><label for="id_item-0-DELETE">Delete:</label></th><td><input type="checkbox" name="item-0-DELETE" id="id_item-0-DELETE" /><input type="hidden" name="item-0-featureditemset" id="id_item-0-featureditemset" /></td></tr>
cleaned_data: [{'id': 5}]

Answer 1

I figured it out. This line in my form constructor was (only sometimes?) throwing an IOError and screwing up my formset form validation/cleaning:
self.fields['img'] = forms.ImageField(label='Featured Image') # gets rid of 'clear' checkbox
When I posted my code, I took out some of the (what I thought was superfluous) form code, but what I took out turned out to be the source of the problem.