Hello friends,
products = Task.objects.select_related().all()
for p in products:
print(p.product.product_name)
This gives product that has relation in Task model but *I need product
which doesn't have relation in Task *
*Means we have products have relations in Task model and others with no
relation in Task model and I need a queryset to display those with no
relations in Task *
On Sat, Apr 27, 2024 at 4:57 PM Kelvin Macharia
wrote:
> Before I share my thoughts here is a question for you. Where do you expect
> your product to be printed out?
>
> Here is what I think you should try out.
>
> First, the source code looks correct to me. Your view only get triggered
> when you access the routes(url) pointing to this view via the browser and
> this doesn't rerun server to print result on your console so you won't see
> anything get printed on the console. I presume you could be thinking of
> running a django app like you do with ordinary python scripts, your right
> but django is a python framework which requires specifics configurations to
> get results.
>
> To test your code and see products get printed out try this:
>
> 1. Use a template. Modify your view as follows:
>
> def product_task(request):
> products = Task.objects.select_related().all()
> context = {'products': products}
>
> return render(request, 'product-task.html', context)
>
> Create the template, configure routes in urls.py to point to this view and
> access through browser. Remember to add dummy data in your db
>
> 2. To print out your products using a for loop, use the django shell using
> '*python manage.py shell*'
>
> e.g.
> (.venv)
> python manage.py shell
> Python 3.12.2 (tags/v3.12.2:6abddd9, Feb 6 2024, 21:26:36) [MSC v.1937 64
> bit (AMD64)] on win32
> Type "help", "copyright", "credits" or "license" for more information.
> (InteractiveConsole)
> >>> from stores.models import Task, Product
> >>> products = Task.objects.select_related().all()
> >>> for p in products:
> ... print(p.product.product_name)
> ...
> Coffee
> Banana Bread
>
> Note:
> 1. Stores refers to a dummy app I have created to host models.py.
> 2. Coffee and Banana Bread are just products I have added as dummy data.
>
> Hopes this help or atleast gives a guide somehow
>
> On Friday, April 26, 2024 at 5:22:26 PM UTC+3 Muhammad Juwaini Abdul
> Rahman wrote:
>
>> You're looking for `product`, but the model that you queried is `Task`.
>>
>> On Fri, 26 Apr 2024 at 17:40, Abdou KARAMBIZI
>> wrote:
>>
>>> Hello,
>>> *I have 2 models :*
>>>
>>> class Product(models.Model):
>>> product_id = models.AutoField(primary_key=True)
>>> product_name = models.CharField(max_length=200)
>>> price = models.IntegerField()
>>> image =
>>> models.ImageField(upload_to='images/products_images/',null=True,blank=True)
>>>
>>>
>>> def __str__(self):
>>> return self.product_name
>>>
>>>
>>> class Task(models.Model):
>>> task_id = models.AutoField(primary_key=True)
>>> user = models.ForeignKey(User,on_delete = models.CASCADE)
>>> product = models.ForeignKey(Product,on_delete=models.CASCADE)
>>> performed_at = models.DateTimeField(auto_now_add=True)
>>>
>>> def __int__(self):
>>> return self.task_id
>>>
>>> *and I have following view with queryset :*
>>>
>>> def product_task (request):
>>> product = Task.objects.select_related().all()
>>> for p in product:
>>> print(p.product.product_name)
>>>
>>>
>>> *I want to get products don't appear in task model*
>>>
>>>
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>>>
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