django - MongoDB database. Error "Select a valid choice. That choice is not one of the available choices."

Question

I have installed MongoDB in my Django project. Because is the first time I use Mongo, I decided to try how it works and I created a simple program to store data ( price and quantity in my case). The project is called "exchange" and it has 2 folders: exchange and app.

This is the file models.py from 'app' folder:

from django.db import models
from djongo.models.fields import ObjectIdField, Field
from django.contrib.auth.models import User

class Profile(models.Model):
    _id = ObjectIdField()
    user = models.ForeignKey(User, on_delete=models.CASCADE)

class Order(models.Model):
    _id = ObjectIdField()
    profile = models.ForeignKey(Profile, on_delete=models.CASCADE)
    datetime = models.DateTimeField(auto_now_add=True)
    price = models.FloatField()
    quantity = models.FloatField()
    #ips = models.Field(default=[])
    #subprofiles = models.Field(default={})

This is the file admin.py

from django.contrib import admin
from .models import *

admin.site.register(Profile)
admin.site.register(Order)

This is how I set the database in the file settings.py of the exchange folder

DATABASES = {
    'default': {
        'ENGINE': 'djongo',
        'NAME': 'engine',
    }
}

So after made the migrations and create the superuser, I run the server, I went into the section Admin than in Profile, and I created a profile choosing the only option available (my superuser). At this point I created an order in the Orders section: so I chose in the "profile" field the only option available (the profile created before), then I filled the other 2 fields (price and quantity), but when I try to save it, appears above the field "profile" the following error:

"Select a valid choice. That choice is not one of the available choices."

I cannot understand where I am wrong.

Thanks in advance for your help!

question from:https://stackoverflow.com/questions/65643818/mongodb-database-error-select-a-valid-choice-that-choice-is-not-one-of-the-av

Answer 1

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