Hi all, I'm having some trouble understanding fairly basic URL mappings and
how they rout through to templates. I have an app "stock" which is
registered in my base admin.py. I have three classes in my app,
stock\models.py listed below:
from django.db import models
class Supplier(models.Model):
supplierName = models.CharField(max_length=64, default='')
def __str__(self):
return self.supplierName
class Stock(models.Model):
stockCode = models.CharField(max_length=32, default='null')
stock_supplier = models.ManyToManyField(Supplier, through=
'SupplierStock') # Populated automatically
stockDescription = models.CharField(max_length=128)
retailPrice = models.CharField(max_length=16, default='')
def __str__(self):
return self.stockCode + '; ' + self.stockDescription + ' @£' + self.
retailPrice
#Quote
class SupplierStock(models.Model):
stock = models.ForeignKey(Stock, on_delete=models.CASCADE)
supplier = models.ForeignKey(Supplier, on_delete=models.CASCADE)
supplierCode = models.CharField(max_length=32)
supplierPrice = models.CharField(max_length=16)
quoteRef = models.CharField(max_length=32, default="")
unitSize = models.PositiveSmallIntegerField(default=1)
def __str__(self):
return self.supplierCode + ', £' + self.supplierPrice + ' Per ' +
str(self.unitSize) + '; ' + self.quoteRef
The app is a basic stock record for stock items, suppliers, and quotes as
per "SupplierStock". I am playing around trying to get the individual
classes in my stock\models.py to map to templates in
"stock\templates\stock\" but am only having partial success. I can get my
index.html and details.html to display a list of stock Items, and details
for the stock items respectfully, but am having trouble displaying similar
results for the supplier.html template and supplierdetail.html. Here's my
code for stock\urls.py
from django.conf.urls import url
from . import views
app_name = 'stock' # Referenced by template, ie <li> item in index.html
urlpatterns = [
# /stock/
url(r'^$', views.index, name="index"),
# /stock/nnn/
url(r'^(?P<stock_id>[0-9]+)/$', views.detail, name="detail"),
# /stock/supplier
url(r'^supplier', views.supplier, name="supplier"),
# /stock/supplier/nnn/
url(r'^supplier/(?P<supplier_id>[0-9]+)/$', views.supplierdetail, name=
"supplierdetail"),
]
The stock\views.py code:
from django.shortcuts import render, get_object_or_404
from .models import Stock, Supplier, SupplierStock
def index(request):
all_stock = Stock.objects.all()
return render(request, 'stock/index.html', {'all_stock' : all_stock})
def detail(request, stock_id):
stock = get_object_or_404(Stock, id=stock_id)
return render(request, 'stock/detail.html', {'stock' : stock})
def supplier(request):
all_supplier = Supplier.objects.all()
return render(request, 'stock/supplier.html', {'all_supplier' :
all_supplier})
def supplierdetail(request, supplier_id):
supplier = get_object_or_404(Supplier, id=supplier_id)
return render(request, 'stock/supplierdetail.html', {'supplier' :
supplier})
The code for stock\templates\stock\index.html:
{% if all_stock %}
<h3>Stock list</h3>
<ul>
{% for stock in all_stock %}
<li><a href="{% url 'stock:detail' stock.id %}">{{ stock.stockCode
}}; {{ stock.stockDescription }}</a></li>
{% endfor %}
</ul>
{% else %}
<h3>No stock found</h3>
{% endif %}
...and a simple stock\templates\stock\detail.html that shows detail for the
stock item as expected:
{{ stock }}
I thought I would be able to get away with copying most of the code to
achieve similar results for the supplier and supplierdetail templates. My
stock\supplier.html correctly displays a list of links to suppliers, but
the links do not work, the it just stays on the page. Here's what I have
for stock\templates\stock\supplier.html
{% if all_supplier %}
<h3>Supplier list</h3>
<ul>
{% for supplier in all_supplier %}
<li><a href="{% url 'stock:supplierdetail' supplier.id %}">{{
supplier.supplierName }}</a></li>
{% endfor %}
</ul>
{% else %}
<h3>No Supplier found</h3>
{% endif %}
...and for stock\templates\stock\supplierdetail.html
<h1>Supplier details here</h1>
{{ supplier }}
As mentioned, the index.html and detail.html templates render fine, but the
links in supplier.html are dead. I'll be trying to connect the models up in
one template to display individual quotes from suppliers but am having
trouble getting past this step. The project is using Django 1.11.8 and
Python 3.6.2 on Windows 8.1 Pro.
I should also mention that the Django admin page displays all the
information I'm trying to display fine. Thanks for taking the time to read
my issue, and I'll be very grateful for any assistance offered!
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