CODEWITHSUNDEEP
pythondjango
betty_
betty_

Reputation: 71

Filter False in a list of Booleans

I've five Product objects with 3 product's availability set to True and rest False, I'm trying to set Checkout Status Button to Out of Stock even if one product has availablity set to False.

Because cart view cannot use slug, {% if product.availability %} is pointless, and can't use 'for loop' or it would create multiple checkout buttons, what's the way to fix this?

Model

class Product(models.Model):
    availablity = models.BooleanField()

View

def cart(request):
    products = Product.objects.all()

Cart template

{% for product in products %}
    <p>{product.name}</p>
    <p>{product.price}</p>
{% endfor %}


<!--Checkout Status Button-->
{% if product.availability %}
    <a href="#">Checkout</a>
{% else %}
    <p>Out of stock</p>
{% endif %}

Upvotes: 0

Views: 53

Answers (3)

furas
furas

Reputation: 143187

You should do all calculation in view and send only single True/False to template.

For example

products = Product.objects.all()

available = all(x.availability for x in products)

context = {..., "available": available}

{% if available %}
    <a href="#">Checkout</a>
{% else %}
    <p>Out of stock</p>
{% endif %}

Upvotes: 1

m8nkeyboi
m8nkeyboi

Reputation: 1

In your cart view, you could add a context dictionary to your render() call? So basically :

  • Check products for the availability condition and set a variable available to True/False
  • change your render call to render(cart_template, {'products' : products, 'available' : available})
  • change your cart template to use {% if available %}

Upvotes: 0

Hemal Patel
Hemal Patel

Reputation: 933

def cart(request):
    products = Product.objects.all()
    availibility = True
    for prod in products:
        if prod.availability = False:
           availability = False
           break
    context = { "products" :products, "availability" :availability }

in Html

if availability` True  then show `Checkout` else `Out of Stock`

Upvotes: 0

Related Questions