Creating object in django model form with foreign key - django-forms

Question

I am inserting a new record in my model form where my model is child form containing a foriegn key. When I am submitting the form it give error it should be instance of the foriegn key.
Here is my model
class MMEditidState(models.Model):
state_id = models.IntegerField(primary_key = True)
state_dremelid = models.ForeignKey(MMDremelDump, db_column = 'state_dremelid')
assignee = models.CharField(max_length = 50)
state = models.CharField(max_length = 50)
role = models.CharField(max_length = 50)
date = models.DateTimeField()
class Meta:
db_table = u'mm_editid_state'
def __unicode__(self):
return u'%s %s' % (self.state_dremelid, self.assignee)
class MMEditidErrors(models.Model):
error_id = models.IntegerField(primary_key = True)
error_stateid = models.ForeignKey(MMEditidState, db_column = 'error_stateid')
feature_type = models.CharField(max_length = 20)
error_type = models.CharField(max_length = 20)
error_nature = models.CharField(max_length = 50, null = True)
error_details = models.CharField(max_length = 50)
error_subtype = models.CharField(max_length = 200)
date = models.DateTimeField()
class Meta:
db_table = u'mm_editid_errors'
def __str__(self):
return "%s" % (self.error_dremelid)
def __unicode__(self):
return u'%s' % (self.error_dremelid)
Here is my View
def qcthisedit(request, get_id):
if request.method == "POST":
form = forms.MMEditidErrorForm(get_id, request.POST)
if form.is_valid():
form.save()
return http.HttpResponseRedirect('/mmqc/dremel_list/')
else:
form = forms.MMEditidErrorForm(get_id)
return shortcuts.render_to_response('qcthisedit.html',locals(),
context_instance = context.RequestContext(request))
Here is my form
class MMEditidErrorForm(forms.ModelForm):
def __init__(self,get_id, *args, **kwargs):
super(MMEditidErrorForm, self).__init__(*args, **kwargs)
dremel = MMEditidState.objects.filter(pk=get_id).values('state_id')
dremelid = int(dremel[0]['state_id'])
self.fields['error_stateid'] = forms.IntegerField(initial = dremelid,
widget = forms.TextInput(
attrs{'readonly':'readonly'}))
feature_type = forms.TypedChoiceField(choices = formfields.FeatureType)
error_type = forms.TypedChoiceField(choices = formfields.ErrorType)
error_nature = forms.TypedChoiceField(choices = formfields.ErrorNature)
error_details = forms.TypedChoiceField(choices = formfields.ErrorDetails)
error_subtype = forms.TypedChoiceField(choices = formfields.ErrorSubType)
class Meta:
model = models.MMEditidErrors
exclude = ('error_id','date')
When I submit the form I am getting the error
Cannot assign "1": "MMEditidErrors.error_stateid" must be a "MMEditidState" instance.
So I have added line
get_id = MMEditidState.objects.get(pk = get_id)
Now I am getting the below mentioned error
int() argument must be a string or a number, not 'MMEditidState'
in form = forms.MMEditidErrorForm(get_id, request.POST)
Can someone help on this
Thanks
Vikram

Answer 1

I have solved this problem by simply using the custom forms instead of model forms. While storing the data in the database, I managed myself in the views.py