Django Show selected data from database based on user input in html - html

Question

I am a newbie.
I create restaurant system by using Django. I want to display data (table number, item, and quantity of the food) which has been inserted to database. I want to show the data based on the random id which has been generated while the customer doing the food ordering. Hence, I do not know how to do it.
Anyone can help me please
I have tried these codes, but it only shows the back button. I cannot retrieve the data based on the random id from database
here is my models.py
class OrderItem(models.Model):
Table_No = models.IntegerField(blank=False)
Item = models.TextField()
Qty = models.IntegerField(blank=False)
Price = models.TextField()
Status = models.TextField(max_length=100, null=True)
OrderId = models.TextField(max_length=100, null=True)
my html file:
<form action="" method="post">
{% csrf_token %}
<!--<input type="Submit" name="submit" value="See Order"/>-->
{% for order in so1 %}
<table width="800">
<tr>
<th width="800">Table Number</th>
<th width="800">Item</th>
<th width="800">Quantity</th>
<th width="800">Status</th>
<th width="800">Order Id</th>
</tr>
<tr>
<td width="800">{{ order.Table_No }}</td>
<td width="800">{{ order.Item }}</td>
<td width="800">{{ order.Qty }}</td>
<td width="800">{{ order.Status }}</td>
<td width="800">{{ order.OrderId }}</td>
</tr>
{% endfor %}
<input action="action" onclick="window.history.go(-1); return false;" type="button" value="Back" />
my view:
def see_order(request):
if request.method == "POST":
Table_No = request.POST.get("Table_No")
Item = request.POST.get("Item")
Qty = request.POST.get("Qty")
Status = request.POST.get("Status")
OrderId = request.POST.get("OrderId")
track_order = request.POST.get('textfield', None)
if(OrderItem.objects.get(OrderId)):
if(OrderId==OrderId):
try:
summary = OrderItem.objects.get(OrderId=track_order)
so1 = OrderItem.objects.filter(Table_No=Table_No)
so = OrderItem.objects.filter(Item=Item)
so = OrderItem.objects.filter(Qty=Qty)
so = OrderItem.objects.filter(Status=Status)
so = OrderItem.objects.filter(OrderId=OrderId)
html = ("<H1>%s</H1>", summary)
return render(request, 'restaurants/see_order.html', {'so1': so1 , 'so': so})
except OrderItem.DoesNotExist:
return HttpResponse("no such user")
else:
return render(request, 'restaurants/customer_page.html')
I expect the result will show the table number, item, and quantity when i input the random id. But it doesn't show anything except the back button.

Answer 1

Your logic makes no sense.
You make lots of queries, but ignore their result - you either do nothing with the variable at all, or overwrite the existing variable with the result of the next query.
For example, you get summary, wrap it in "h1" tags for some reason (why aren't you doing that in the template) to get a variable called html, and then completely ignore that variable.
For the rest, you get something called so by filtering on Item, then overwrite that with a completely different filter based on Qty, then Status, etc.
Not to mention, if(OrderId==OrderId) is completely pointless.
You should remove all the useless logic. Since you want to filter by OrderId, you should just do that, and return the data to the database.
if request.method == "POST":
OrderId = request.POST.get("OrderId")
so = OrderItem.objects.filter(OrderId=OrderId)
return render(request, 'restaurants/see_order.html', {'so': so})