How to design a Django API to handle a "Dynamic" form?

Question

I have built an Angular form that contains a form array. So the user has the control to add fields or delete fields from the form. What I am trying to understand is how I can design a Django API that can handle the post for this kind of dynamic form?

I do not want the user to create an account on the website in order to place his order. Is that even possible?

Answer 1

For me, I used Django-RESTframework to build the api.

The way to achieve this is simple, just create the model and iterate through the items which is the dynamic part, and assign the Foreignkey field to obj.id created. First, I created the main model instance, then created the instances of the child instances. I will use Order and Item to demonstrate the idea, The Item instance will have Foreinkey field to Order model.

In the Item model, add "related_name" argument to the Foreinkey field

order = models.ForeignKey(Order, related_name='items',on_delete=models.CASCADE)

serializers.py

class ItemSerializer(serializers.ModelSerializer):
class Meta:
    model = Item
    fields = [
        ....your fields...
    ]



class OrderSerializer(serializers.ModelSerializer):
items = ItemSerializer(many=True)
class Meta:
    model = Order
    fields = [
        'order', ....

    ]

def create(self, validated_data):
    items_data = validated_data.pop("items")
    order = Order.objects.create(**validated_data)
    order.total_fees = order.delivery_fees
    for item in items_data:
        i = Item.objects.create(order=order, **item)

    return order