👀 Views: 15 💬 Answers: 1 📅 Created: 2025-06-16

django models forms one-to-one Python

I'm having trouble with I'm collaborating on a project where I'm sure I'm missing something obvious here, but I'm working on a Django application where I have a custom user model, and I'm trying to create a one-to-one relationship with a user profile. However, the fields in my profile model are not saving correctly when I try to save them through a form. Here's a simplified version of my models: ```python from django.contrib.auth.models import AbstractUser from django.db import models class CustomUser(AbstractUser): email = models.EmailField(unique=True) class UserProfile(models.Model): user = models.OneToOneField(CustomUser, on_delete=models.CASCADE) bio = models.TextField(blank=True) age = models.PositiveIntegerField(null=True, blank=True) ``` I have registered the `UserProfile` model in the admin and created a form in Django for users to submit their profiles: ```python from django import forms from .models import UserProfile class UserProfileForm(forms.ModelForm): class Meta: model = UserProfile fields = ['bio', 'age'] ``` In my view, I'm trying to handle the form submission like this: ```python from django.shortcuts import render, redirect from .forms import UserProfileForm def update_profile(request): if request.method == 'POST': form = UserProfileForm(request.POST, instance=request.user.userprofile) if form.is_valid(): form.save() return redirect('profile') else: form = UserProfileForm(instance=request.user.userprofile) return render(request, 'update_profile.html', {'form': form}) ``` However, when I submit the form, I get a `KeyError` related to the fields in the `UserProfileForm`, and sometimes, even though no behavior occurs, the data doesn't seem to save. I've confirmed that the user profile exists before trying to load it into the form. I've tried printing the `request.POST` data before form validation, and it looks like this: ```json { "bio": "Hello!", "age": "25" } ``` But for some reason, when I check the database after submitting, the profile fields remain `null` or empty. I also double-checked that the migrations for `UserProfile` have been applied correctly. Does anyone have insight into what might be going wrong here? Is there something I'm missing in the form handling or model relationship? I'm using Django 3.2.5. I'm coming from a different tech stack and learning Python. Has anyone dealt with something similar? I'm using Python LTS in this project.