How can I use reverse relation items in templates django-CodePudding

 {% for order in orders %}
  <li>{{order.customer.last_name}} - {{ order.orderitem_set.product.unit_price }}</li>
  {% endfor %}

class Product(models.Model):
    title = models.CharField(max_length=255)
    slug = models.SlugField()
    description = models.TextField()
    unit_price = models.DecimalField(max_digits=6, 
    decimal_places=2)
    inventory = models.IntegerField()
    last_update = models.DateTimeField(auto_now=True)
    collection = models.ForeignKey(Collection, 
    on_delete=models.PROTECT)
    promotions = models.ManyToManyField(Promotion)

class Order(models.Model):
    placed_at = models.DateTimeField(auto_now_add=True)
    customer = models.ForeignKey(Customer, 
    on_delete=models.PROTECT)

class OrderItem(models.Model):
    order = models.ForeignKey(Order, on_delete=models.PROTECT)
    product = models.ForeignKey(Product, on_delete=models.PROTECT)
    quantity = models.PositiveSmallIntegerField()
    unit_price = models.DecimalField(max_digits=6, 
    decimal_places=2)

How can I get products unit_price in browser, last_name shows but when I am trying to use django reverse relation created item the value don't showing

CodePudding user response：

As an order can consist of multiple items you would have to iterate over the set (the reverse relation):

{% for item in order.orderitem_set.all %}
    {{ item.product.title }}
{% endfor %}

Habe a look at the documentation for querying reverse relations.