Custom Template Filters

# models.py

from django.db import models

class Price(models.Model):
    amount = models.DecimalField(max_digits=8, decimal_places=2)

    def __str__(self):
        return f"{self.amount}"
      

# admin.py

from django.contrib import admin
from .models import Price

@admin.register(Price)
class PriceAdmin(admin.ModelAdmin):
    list_display = ("amount",)
      

  
# templatetags/shop_extras.py

from django import template
register = template.Library()

@register.filter
def currency(value, symbol="$"):
    return f"{symbol}{value:,.2f}"

      

# templates/price.html

<{% load shop_extras %}>
<p>Total: {{ price.amount|currency:"$" }}</p>