Outer loop value does not matches with inner loop value: Django template - django

Question

I have written a nested loop and doing value comparison between data coming from outer loop with inner loop. Below is my template code :-
<tbody>
{% for col in filter2.qs %}
<tr>
{% for mso in filter1.qs %}
{{ col.box_id }} vs {{ mso.box_id }}
<br>
{% if mso.box_id == forloop.parentloop.col.box_id %}
<td>{{ mso.mso_id }}</td>
<td>{{ col.box_id }}</td>
<td>{{ col.channel_id }}</td>
{% endif %}
{% endfor %}
</tr>
{% empty %}
<tr>
<td colspan="5">No data</td>
</tr>
{% endfor %}
</tbody>
Problems are :
When i do print {{ col.box_id }} vs {{ mso.box_id }} i can see values
When i do print {{ col.box_id|length }} vs {{ mso.box_id|length }} i see length of outer loop value as 0.
If condition below the prints never runs hence no data is inserted in the table.
I am getting data for both the loops from views.py
def search(request):
user_list1 = VCB_Execution_Details.objects.all()
user_filter1 = ReportFilter_VCB_Execution_Details(request.GET, queryset=user_list1)
user_list2 = VCB_Details.objects.all()
user_filter2 = ReportFilter_VCB_Details(request.GET, queryset=user_list2)
print(user_filter2.qs)
print(type(user_filter1))
return render(request, 'user_list.html', {'filter1':user_filter2,'filter2': user_filter1})
filters.py
class ReportFilter_VCB_Execution_Details(django_filters.FilterSet):
class Meta:
model = VCB_Execution_Details
fields = ['box_id','channel_id']
class ReportFilter_VCB_Details(django_filters.FilterSet):
class Meta:
model = VCB_Details
fields = ['box_id','mso_id']

Answer 1

So Finally i got the answer, problem was the object type was VCB_Execution_Details vs str. I tried checking the data type in def search(request): by printing variable type for each data in queryset of user_list1 and user_list2