Update data in database based on order id in Django - django

Question

I am new in Django.
I want to update the value in the database based on the order id. Therefore, every order id has different updates. But, i only can update the last item that i add to the order. And every previous orders that i have, will directly follow the update from the last item.
models.py
class OrderItem(models.Model):
Table_No = models.IntegerField(blank=False)
FoodId = models.TextField()
Item = models.TextField()
Qty = models.DecimalField(max_digits=5, decimal_places=0)
Price = models.DecimalField(max_digits=10, decimal_places=2)
TotalPrice = models.TextField()
Note = models.TextField(max_length=100, null=True)
OrderId = models.TextField(max_length=5, null=True)
FoodStatus = (
('1', 'Has been ordered'),
('2', 'cooked'),
('3', 'ready to be served'),
('4', 'done'),
)
food_status = models.CharField(max_length=50, choices=FoodStatus)
views.py
def kitchen_view(request):
chef_view = OrderItem.objects.all()
if request.method == "POST":
order_id = request.POST.get("OrderId")
status = OrderItem.objects.filter(OrderId=request.POST.get("OrderId"))
status.status1 = OrderItem.objects.update(food_status=request.POST.get("food_status"))
return render(request, 'restaurants/kitchen_page.html', {'chef_view': chef_view})
kitchen_page.html
<form action="#" method="post">
<style>
table, th, td {
border: 1px solid black;
}
</style>
{% csrf_token %}
{% for order in chef_view %}
<table width="800">
<tr>
<th width="800">Table Number</th>
<th width="800">Item</th>
<th width="800">Quantity</th>
<th width="800">Price</th>
<th width="800">Note</th>
<th width="800">Order Id</th>
<th width="800">Status</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.Price }}</td>
<td width="800">{{ order.Note }}</td>
<td width="800">{{ order.OrderId }}</td>
<td width="800">{{ order.food_status }}
<input type="text" name="food_status">
</tr>
</table>
{% endfor %}
<br><a href='' button onclick="myFunction()"><input type="submit" value="Change Status"></button>
</form>
The result should be able to update the food_status based on the order_id. Therefore, every order_id may have different food_status and show it to the template.
Anyone can help me to solve this problem? I really need the help to solve this issue. Really appreciate.

Answer 1

Ok so real problem is that your form is incorrect - you are not sending OrderId to view. Here's quickfix to it:
kitchen_page.html:
<style>
table, th, td {
border: 1px solid black;
}
</style>
<form action="#" method="post">
<table width="800">
<tr>
<th width="800">Table Number</th>
<th width="800">Item</th>
<th width="800">Quantity</th>
<th width="800">Price</th>
<th width="800">Note</th>
<th width="800">Order Id</th>
<th width="800">Status</th>
</tr>
{% csrf_token %}
{% for order in chef_view %}
<tr>
<td width="800">{{ order.Table_No }}</td>
<td width="800">{{ order.Item }}</td>
<td width="800">{{ order.Qty }}</td>
<td width="800">{{ order.Price }}</td>
<td width="800">{{ order.Note }}</td>
<td width="800">{{ order.OrderId }}</td>
<td width="800">{{ order.food_status }}
<input type="text" name="food_status" value="{{ order.food_status }}">
</tr>
<input type="hidden" name="OrderId" value="{{ order.OrderId }}">
{% endfor %}
</table>
<br><button type="submit" value="Change Status">Change Status</button>
</form>
views.py:
def kitchen_view(request):
if request.method == "POST":
order_ids = request.POST.getlist("OrderId")
food_statuses = request.POST.getlist("food_status")
for i in range(len(order_ids)):
OrderItem.objects.filter(OrderId=order_ids[i]).update(food_status=food_statuses[i])
chef_view = OrderItem.objects.all()
return render(request, 'restaurants/kitchen_page.html', {'chef_view': chef_view})

Answer 2

Previously stored filtered objects are not being updated as you have
status = OrderItem.objects.filter(OrderId=request.POST.get("OrderId"))
but when you are updating them, you should be updating the already filtered objects like
status = status.update(food_status=request.POST.get("food_status"))
Hope this helps.

Answer 3

You can update multiple objects at once including the filter in a single line as:
status = OrderItem.objects.filter(OrderId=request.POST.get("OrderId")).update(food_status=request.POST.get("food_status"))
The problem in your code:
status.status1 = OrderItem.objects.update(food_status=request.POST.get("food_status"))
was that you were not using the filter, instead you tried updating the status1 field(Can't see a status1 field in your model) using status.status1.