My for loop does not work as expected - Data does not show up in my django template - django

Question

I am trying to use a for loop in my Django template to show the data stored in the models of a table but for some reason , the data does not show up in the template.
Views.py
def add_part(request):
parts = Parts.objects.all()
context = {
"parts": parts
}
return render(request, 'admintemplate/add_parts_template.html', context)
def add_part_save(request):
if request.method != "POST":
messages.error(request, "Method Not Allowed!")
return redirect('add_part')
else:
part_name = request.POST.get('part_name')
part_type = request.POST.get('part_type')
supplier_id = request.POST.get('suppliers')
suppliers = Suppliers.objects.get(id=supplier_id)
try:
part = Parts(part_name=part_name, part_type=part_type, supplier_id=supplier)
part.save()
messages.success(request, "Part Added Successfully!")
return redirect('add_part')
except:
messages.error(request, "Failed to Add Part!")
return redirect('add_part')
models.py
The parts and the services model are exactly the same with different column names, so I think the functionality for both should be the same.
Suppliers models
class Suppliers(models.Model):
id = models.AutoField(primary_key=True)
name = models.CharField(max_length=20)
Parts model
class Parts(models.Model):
id = models.AutoField(primary_key=True)
name = models.CharField(max_length=20)
part_type = models.CharField(max_length=20)
supplier_id = models.ForeignKey(Suppliers, on_delete=models.CASCADE)
Services model
class Services(models.Model):
id = models.AutoField(primary_key=True)
name = models.CharField(max_length=20)
service_type = models.CharField(max_length=20)
supplier_id = models.ForeignKey(Suppliers, on_delete=models.CASCADE)
Part template
{% extends 'admintemplate/base_template.html' %}
{% block page_title %}
Add Parts
{% endblock page_title %}
{% block main_content %}
{% load static %}
<section class="content">
<div class="container-fluid">
<div class="row">
<div class="col-md-12">
<!-- general form elements -->
<div class="card card-primary">
<div class="card-header">
<h3 class="card-title">Add Parts</h3>
</div>
<!-- /.card-header -->
<!-- form start -->
<form role="form" method="POST" action="{% url 'add_part_save' %}">
{% csrf_token %}
{% comment %} Display Messages {% endcomment %}
{% if messages %}
<div class="form-group">
<div class="col-12">
{% for message in messages %}
{% if message.tags == "error" %}
<div class="alert alert-danger alert-dismissible fade show" role="alert" style="margin-top: 10px;">
{{ message }}
<button type="button" class="close" data-dismiss="alert" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
{% elif message.tags == "success" %}
<div class="alert alert-success alert-dismissible fade show" role="alert" style="margin-top: 10px;">
{{ message }}
<button type="button" class="close" data-dismiss="alert" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
{% endif %}
{% endfor %}
</div>
</div>
{% endif %}
<div class="card-body">
<div class="form-group">
<label>Part Name </label>
<input type="text" class="form-control" name="part_name" placeholder="Part Name">
</div>
<div class="form-group">
<label>Part Type </label>
<input type="text" class="form-control" name="part_type" placeholder="Part Type">
</div>
<div class="form-group">
<label>Supplier Name</label>
<select class="form-control" name="suppliers">
{% for supplier in suppliers %}
<option value="{{ supplier.id }}">{{ supplier.name }}</option>
{% endfor %}
</select>
</div>
</div>
<!-- /.card-body -->
<div class="card-footer">
<button type="submit" class="btn btn-primary">Add Part</button>
</div>
</form>
</div>
<!-- /.card -->
</div>
</div>
</div><!-- /.container-fluid -->
</section>
{% endblock main_content %}
Now the services in parts template does not show up at all. There is no choices on the form. But, for the add services template, it does populate. I have no idea why this happens because I have used the exact same code for both templates.

Answer 1

Changing the view to this solved the issue
def add_part(request):
parts = Parts.objects.all()
context = {
"suppliers": suppliers
}
return render(request, 'admintemplate/add_parts_template.html', context)