How To use Property In Django models

Hello Guys,
In Django models, the @property decorator is used to define a read-only property for a model’s instance. This allows you to create a property that is calculated dynamically based on the model’s fields or other attributes

Benefits Of the use of `@property`

Abstraction of Complex Logic: Encapsulate complex logic or calculations in a clean, readable way.
Avoid Unnecessary Database Queries: Computed properties are evaluated in Python, reducing the need for additional database queries.
Dynamic Computed Fields: Easily compute fields on-the-fly based on other attributes.

How to use @property

In the case you have a contestant model

class Contestant(models.Model):
    first_name = models.CharField(max_length=200, blank=True, null=True)
    last_name = models.CharField(max_length=200, blank=True, null=True)
    vote = models.IntegerField(max_length=200, blank=True, null=True)
    date_created = models.DateTimeField(auto_now_add=True)
    
    @property
    def full_name(self): 
      # function to return the full name of the user
      return f"{self.first_name} {self.last_name}"
    
    
    @property
    def percentage_vote(self):
      # this is to return the percentage value of each user without the need to calculate it at the views section
      total_vote = Contestant.objects.all().aggregate(Sum("vote"))[
        "vote__sum"
    ]
      percentage = (self.vote/total_vote) * 100
      return percentage