Django - saving model via a form is not working - django

Question

I'm having a little problem with the .save() method in Django. For 1 form it works, for the other it doesn't. And I can't find the problem.
views.py
#login_required
def stock_add(request, portfolio_id):
if request.method == 'POST':
print('request.method is ok')
form = StockForm(request.POST)
print('form is ok')
if form.is_valid():
print('form is valid')
stock = form.save(commit=False)
stock.created_by = request.user
stock.portfolio_id = portfolio_id
stock.save()
return redirect('portfolio-overview')
else:
print("nope")
else:
print('else form statement')
form = StockForm()
context = {
'form':form
}
return render(request, 'portfolios/stock-add.html', context)
forms.py
class StockForm(ModelForm):
class Meta:
model = Stock
fields = ['quote', 'amount']
html
{% extends 'core/base.html' %}
{% block content %}
<div class="container">
<h1 class="title">Add Stock</h1>
<form method="POST" action=".">
{% csrf_token %}
{{ form.as_p }}
<button type="submit" class="button is-primary">Submit</button>
</form>
</div>
{% endblock %}
models
from django.db import models
from django.contrib.auth.models import User
# Create your models here.
class Portfolio(models.Model):
title = models.CharField(max_length=56)
description = models.TextField(blank=True, null=True, max_length=112)
created_by = models.ForeignKey(User, related_name='portfolios', on_delete=models.CASCADE)
created_at = models.DateTimeField(auto_now_add=True)
class Meta:
verbose_name_plural = 'Portfolio'
def __str__(self):
return self.title
class Stock(models.Model):
Portfolio = models.ForeignKey(Portfolio, related_name='stocks', on_delete=models.CASCADE)
quote = models.CharField(max_length=10)
amount = models.IntegerField()
created_by = models.ForeignKey(User, related_name='stocks', on_delete=models.CASCADE)
created_at = models.DateField(auto_now_add=True)
def __str__(self):
return self.quote
If you look at the views.py file, when I submit the form, it won't even do print('request.method is ok')
I can add the stock via the admin page.
So I have no clew where to look anymore...
Cheers

Answer 1

When you post a form and need a special url (like your' with an attribute), i like to set action="{% url myview.views.stock_add portfolio_id %}"
action="." will save to the same page without taking care of extra parameters (if needed)
Just pass portfolio_id in the context and that will work

Answer 2

I found the answer, an InteregerField (from models.py) needs a default value.
Either default=None (or another value).
Cheers