RelatedObjectDoesNotExist: User has no vendor

[GWISU MANYANDA]

Hi Every one! I 'm looking for help.

I'm working with  a multi vendor website using django. But there is an issue that I have vendor object vendor but it says User has no vendor. Why is this happening and how may I solve this?

MY model

from django.contrib.auth.models import User
from django.db import models

class Vendor(models.Model):
    name = models.CharField(max_length=255)
    created_at = models.DateTimeField(auto_now_add=True)
    created_by = models.OneToOneField(User, related_name='vendor', on_delete=models.CASCADE)

class Meta:
    ordering = ['name']

def __str__(self):
    return self.name

My View

def become_vendor(request):
    if request.method == 'POST':
        form = UserCreationForm(request.POST)
        if form.is_valid():
            user = form.save()
            login(request, user)
            vendor = Vendor.objects.create(name=user.username, created_by=user)
            return redirect('frontpage')

    else:
        form = UserCreationForm()
    return render(request, 'vendor/become_vendor.html', {'form': form})

@login_required
def vendor_admin(request):
    vendor = request.user.vendor
    return render(request, 'vendor/vendor_admin.html', {'vendor': vendor})

Error i'm getting

RelatedObjectDoesNotExist at /maduka/vendor_admin/

User has no vendor.

Request Method:	GET
Request URL:	http://127.0.0.1:8000/maduka/vendor_admin/
Django Version:	3.1.3
Exception Type:	RelatedObjectDoesNotExist
Exception Value:	User has no vendor.

[Lalit Suthar]

coming because of `vendor = request.user.vendor`
you have attached user to vendor so you can access user from vendor by doing

`user = vendor.created_by` but you can not access vendor from user

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[GWISU MANYANDA]

thank you Lalit for you respond

I have changed this line

 vendor = request.user.vendor 

to 

user = vendor.created_by 

Now i'm getting this error

NameError at /maduka/vendor_admin/

name 'vendor' is not defined

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[Lalit Suthar]

vendor = Vendor.objects.get(created_by=request.user)
you have to pick vendor like this

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[Indu Chouhan]

Hi ,

You can also try this.

vendor = User.objects.get(pk=request.user.id).vender

Thanks,

Indu Chouhan