How to populate a JqGrid in Django with data obtained from a query (queryset)

I am working on a small online shop with Django 1.9 and JqGrid

Here is a simplification of my models:

    class Addresses(models.Model):

        address = models.TextField(db_column='ADDRESS', max_length=2000)

        city = models.CharField(db_column='CITY', max_length=400, blank=True, null=True)

        postal_code = models.CharField(db_column='POSTAL_CODE', max_length=200, blank=True, null=True)

        state = models.CharField(Country, db_column='STATE', max_length=400, blank=True, null=True)

        country = models.ForeignKey(Country, db_column='COUNTRY_ID', null=True)

    class Customers(models.Model):

        name = models.CharField(db_column='NAME', max_length=400)

        nif = models.CharField(db_column='NIF', max_length=200, null=True, blank=True)

        email = models.CharField(db_column='EMAIL', max_length=255, unique=True)

        mobile_number = models.CharField(db_column='MOBILE_NUMBER', max_length=200, blank=True, null=True)

        phone_number = models.CharField(db_column='PHONE_NUMBER', max_length=200, blank=True, null=True)

        addresses = models.ManyToManyField(Addresses, through='CustomerAddresses')

    class CustomerAddresses(models.Model):

        id = models.AutoField(db_column='ID', primary_key=True)

        address_name = models.CharField(db_column='ADDRESS_NAME', max_length=100)

        customer = models.ForeignKey(Customers)

        address = models.ForeignKey(Addresses)

    class Orders(models.Model):

        order_number = models.IntegerField(db_column='ORDER_NUMBER', unique=True)

        customer = models.ForeignKey('Customers', db_column='CUSTOMER_ID')

        payment_date = models.DateTimeField(db_column='PAYMENT_DATE', blank=True, null=True)

        payment_method = models.CharField(db_column='PAYMENT_METHOD', max_length=400, blank=True, null=True)

        delivery_address = models.ForeignKey('Addresses', db_column='ORDER_DELIVERY_ADDRESS_ID', related_name='delivery_address', blank=True, null=True)

I want an edit page for a given Customer to look like this:

At the bottom, I want to display grids (JqGrid) inside jQuery tabs.

The Orders grid, should contain all the orders that are associated with the current Customer

    queryset = Orders.objects.filter(customer=customer_pk)

Idem, for the Addresses.

As you can see, I successfully created the tabs and grid, BUT the grids are not filled with the required data (queryset).

Could you help me understand how I should populate the grids with the data I want?

I am sorry if this question is not well explained. I am new in Django. If there is something you don't understand, please tell me.

Thanks

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