Displaying model fields in django in a dropdown list

Question

so I'm writting a program for creating orders for specific users and items. My problem is when I'm trying to display all customers, products and statuses from this model:

class Order(models.Model):
    STATUS = (
        ('Pending', 'Pending'),
        ('Out for delivery', 'Out for delivery'),
        ('Delivered', 'Delivered'),
    )
    customer = models.ForeignKey(Customer, null=True, on_delete=models.SET_NULL)
    product = models.ForeignKey(Product, null=True, on_delete=models.SET_NULL)
    date_created = models.DateTimeField(auto_now_add=True, null=True)
    status = models.CharField(max_length=20, null=True, choices=STATUS)

    def __str__(self):
        return self.product.name

I have to do this manually:

{% extends 'accounts/base.html' %}
{% load static %}
{% block main %}
    <form action="" method="post">
        {% csrf_token %}
        <div class="dropdown">
            <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                customer
            </button>
            <div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
                <a class="dropdown-item" > {{ form.customer.1 }}</a>
                <a class="dropdown-item" > {{ form.customer.2}}</a>
                <a class="dropdown-item" > {{ form.customer.3}}</a>
                <a class="dropdown-item" > {{ form.customer.4}}</a>
                <a class="dropdown-item" > {{ form.customer.5}}</a>
            </div>
        </div>
        <input type="submit" name="submit" class="btn btn-success">
    </form>
{% endblock %}

That's because when i tried making a loop which would just give them ids instead of numbers it just wouldn't show up.

Can anybody help me? :(

Forms.py

from django.forms import ModelForm
from .models import *


class OrderForm(ModelForm):
    class Meta:
        model = Order  # model do którego tworzymy formę
        fields = '__all__'  # pola które dzięki niej chcemy uzupełnić

Views.py

def createOrder(request):

    form = OrderForm # tworzymy obiekt który bedzie trzymał formę z plikuu forms.py

    if request.method == 'POST': # jeżeli meotda request-u to POST
        form = OrderForm(request.POST) # to zmieniami wartość obiektu na formę z requestem POST
        if form.is_valid(): # jeżeli forma jest prawidłowa
            form.save() # zapisz formę w bazie danych
            return redirect('/') # przekieruj na stronę główną

    return render(request, 'accounts/order_form.html', {
        'form': form, # przekazujemy formę do html-a aby mogła zostać wyświetlona
    })

Andrzej Długosz · Accepted Answer · 2020-08-21 11:26:03Z

1

Can you post your forms.py ? It should be done just like you want this with Django ModelForm.

You can even filter with some properties with it, like in example below:

class WarehouseForm(forms.ModelForm):
    forms.ModelChoiceField(required=False, widget=forms.Select, queryset=Item.objects.filter(name__in=['Test1', 'Test2']))

    class Meta:
        model = Warehouse
        fields = ['item', 'location']

Because I see that the problem is not in the forms, but actually using them.

You should have form passed into your template by the view, like this:

def some_view(request, pk):
    order = Order.objects.get(id = pk)
    form = OrderForm(instance = order)
    return render(request, 'yourtemplate.html', {'form':form})

Then in the html you can even write:

<form methodd="POST">
    {% csrf_token %}
    {{ form.as_p }}
    <input type='submit' value="Submit">
</form>

If you want to render field by field, you can go with: {{ form.customer }}

If you truly want to just have a loop go with

{% for customer in form.fields.customer.choices.queryset %}
    <a class="dropdown-item" > {{ customer }}</a>
{% endfor %}

and it should more or less - work, but it will probably cause form.is_valid to not act as expected.

edited Aug 21, 2020 at 11:26

answered Aug 21, 2020 at 10:44

Andrzej Długosz

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4 Comments

Alez Over a year ago

It is passed by the view. I also added it to the question.

Alez Over a year ago

Everything works great and shows but i just can't get it to display in a for instead of writting .1 .2 .3 etc.

Alez Over a year ago

I know, but then the form looks very basic and there is no way in styling it.

Alez Over a year ago

Yes but it is supposed to be displayed in a dropdown list from bootstrap, so i have to acces every option from form.customer. I can do that by typing form.customer.1 then .2 and so on, but it only works for a small number of customers. So i would want it in a loop like this for i in form.customer and then pass the i as an id form.customer.i instead of form.customer.1 but it doesn't want to work when i do this.

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