Djongo not obtaining Object Array embedded fields correctly with Django-rest-framework

Question

I am having trouble displaying the codes array as an embedded field on Django.

• I am connecting Django up to a MongoDB where there are embedded documents. (See below)

• Adding the fields in Django Administration works fine. (See below)

  

• However, on the Django Rest Framework it is not showing it as an
  embedded field.

Here is my code for Django models.py

from djongo import models
from django import forms


class Order(models.Model):
    code = models.CharField(max_length=3, blank=False, null=False)
    quantity = models.IntegerField()

    def __str__(self):
        return '%s %s' % (self.code, self.quantity)


class OrderForm(forms.ModelForm):
    class Meta:
        model = Order
        fields = (
            'code', 'quantity'
        )


class Portfolio(models.Model):
    username = models.CharField(
        primary_key=True, max_length=65, default="", blank=False, null=False)
    codes = models.ArrayModelField(
        model_container=Order,
        model_form_class=OrderForm
    )

Thank you!

Answer 1

in version 1.3.1 go to the fields.py file in djongo folder and copy lines 465 & 466 and add these lines after next if.Done

if isinstance(value, dict):
        return value
    
if isinstance(value, ModelSubterfuge):
        value = value.subterfuge

if isinstance(value, dict):
        return value

Answer 2

After a bit of research, I found the answer on https://github.com/nesdis/djongo/issues/115.

I altered serializers.py to check for EmbeddedModelFields or ArrayModelFields:

The def get_codes checks to see if the field is an EmbeddedModelField or ArrayModelField model. If so, then accommodate the field.

from rest_framework import serializers

from portfolio.models import Portfolio

class PortfolioSerializer(serializers.ModelSerializer):
    codes = serializers.SerializerMethodField()
    class Meta:
        model = Portfolio
        fields = ('username', 'codes')

    def get_codes(self, obj):
        return_data = None
        if type(obj.codes) == list:
            embedded_list = []
            for item in obj.codes:
                embedded_dict = item.__dict__
                for key in list(embedded_dict.keys()):
                    if key.startswith('_'):
                        embedded_dict.pop(key)
                embedded_list.append(embedded_dict)
            return_data = embedded_list
        else:
            embedded_dict = obj.embedded_field
            for key in list(embedded_dict.keys()):
                if key.startswith('_'):
                    embedded_dict.pop(key)
            return_data = embedded_dict
        return return_data