how to send instance to ModelForms and fill form with that instance

Question

I have this form:

class TourForm(ModelForm):
   class Meta:
       model = Tour

I wanna design a edit page,so i send tour_id to page and get tour with that tour_id,now I wanna fill this form with tour instance I've gotton.some thing like this in views.py:

tour=Tour.objects.get(pk=tour_id)
tform = TourForm(request.POST, request.FILES,instance=tour)

any help?

update:

these are models:

class Gallery(models.Model):
   HeadImage = models.ImageField(upload_to="gallery")

class Image(models.Model):
   Image = models.ImageField(upload_to="gallery")
   Gallery = models.ForeignKey(Gallery, related_name='images')



class Tour(models.Model):
   Name=models.CharField(max_length=100)
   Count=models.SmallIntegerField() 
   PriceUnit=models.ForeignKey(PriceUnit)
   Price=models.CharField(max_length=12)
   Description=models.TextField()
   ActionDate=models.DateTimeField(auto_now=True,editable=False)
   ActionUser=models.ForeignKey(User,editable=False)
   StatusType=models.ForeignKey(StatusType)
   Gallery = models.OneToOneField(Gallery,editable=False)

fields that are foreigkey like PriceUnit and StatusType,doesn't fill in form.

thanks in advance

sorry! I updated the question now.

Asma Gheisari
– Asma Gheisari

2011-10-27 09:29:13 +00:00
Commented Oct 27, 2011 at 9:29 — Asma Gheisari
– Asma Gheisari, Commented Oct 27, 2011 at 9:29

szaman · Accepted Answer · 2011-10-27 09:14:36Z

1

I think that you should not pass instance nad request.POSt at the same time. Try to do something like this:

if request.method == "POST":
    tform = TourForm(request.POST, request.FILES)
else
    tform = TourForm(instance=tour)

answered Oct 27, 2011 at 9:14

szaman

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2 Comments

DrTyrsa Over a year ago

Any reasons not to pass them together?

Yuji 'Tomita' Tomita Over a year ago

@DrTyrsa generally because doing so triggers form validation. Form({}) is an invalid form, and will display errors.

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