Django -Help displaying content in nested for loop - django

Question

I have a Requisition which may have multiple lines. So to implement this I included a unique_together constraint on two fields on the RequisitionLine model which one of the fields is a FK to Requisition . So naturally to pull all the lines of a requisition I would query the RequisitionLine table where the FK = the id of the Requisition model, then iterate over all the sequences to grab all the lines.
My goal is to display the header number with the lines of that requisition under the header in the template but am struggling to accomplish this. I have tried to iterate over the queryset but the code i am posting below is my most recent attempt trying pass lists to the template which is also not working. Right now each header is showing all the lines. Any help would be appreciated.
Models.py
class Requisition(models.Model):
username = models.ForeignKey(
'users.CustomUser', on_delete=models.CASCADE, related_name='req_user')
signature = models.CharField(max_length=10, blank=True, null=True)
class RequisitionLine(models.Model):
parent_req = models.ForeignKey('Requisition', on_delete=models.CASCADE, related_name='par_req_line' )
sequence = models.PositiveIntegerField()
item_code = models.ForeignKey(
'items.ItemMaster', on_delete=models.CASCADE, related_name='req_item', blank=True, null=True)
description = models.CharField(max_length=50, blank=True)
extra_information = models.TextField(blank=True)
quantity = models.PositiveIntegerField(blank=True, default=0,null=True)
price = models.DecimalField(max_digits=19, decimal_places=2, blank=True, default=0.00,null=True)
purchase_order = models.CharField(max_length=9, blank=True,null=True)
po_line = models.PositiveSmallIntegerField(blank=True,null=True)
req_delivery_date = models.DateField(blank=True,null=True)
act_delivar_date = models.DateField(blank=True, null=True)
status = models.ForeignKey('RequisitionStatus', related_name='req_status', on_delete=models.CASCADE, blank=True, null=True)
assistance = models.ForeignKey('users.UserRoles', related_name='req_assist', blank=True, null=True, on_delete=models.CASCADE, limit_choices_to= ~Q(role='Requestor'))
catagory = models.ForeignKey('items.ItemCatagory', on_delete=models.CASCADE, related_name='line_cat', blank=True, null=True)
notes = models.TextField(blank=True)
class Meta:
unique_together = ('parent_req','sequence')
Views.py
def pending_action(request):
user = CustomUser.objects.get(username=request.user)
user_req_headers = Requisition.objects.filter(username=user)
complete_status = RequisitionStatus.objects.get(status='Completed')
req_line_list = []
for req_header in user_req_headers:
req_lines = RequisitionLine.objects.filter(Q(parent_req = req_header) & ~Q(status=complete_status))
req_line_list.append(req_lines)
return render(request, 'req/pending_action.html', {'user_req_headers':user_req_headers,'req_line_list':req_line_list})
pending_action.html
{% for header in user_req_headers %}
<h3>{{header}}</h3>
{% for req_line in req_line_list %}
{% for req in req_line %}
<table>
{% if forloop.first %}
<tr>
<th>description</th>
<th>catagory</th>
</tr>
{% endif %}
<tr>
<!-- FOR LOOP HERE TO ITERATE OF LIST OF QUERYSETS-->
<td>{{ req }}</td>
</tr>
</table>
{% endfor %}
{% endfor %}
{% endfor %}

Answer 1

I solved this problem by creating a queryset of the header and using a reverse relationship to capture the lines associated with each header
<table class="table">
{% for req_header in req_header_list %}
<tr>
<ul>{{ req_header }}
{% for line in req_header.par_req_line.all %}
<li>{{line}}</li>
{% endfor %}
</ul>
</tr>
{% endfor %}
</table>