How hide/show a field upon selection of a radio button in django admin?

models.py

from django.db import models
from django.contrib.auth.models import User

STATUS_CHOICES = ((1, 'Accepted'),(0, 'Rejected'),)
class Leave(models.Model):
    ----
    ----
    ----
    ----
    status = models.IntegerField(choices=STATUS_CHOICES, default = 0)
    reason_reject = models.CharField(('reason for rejection'),max_length=50, blank=True)

    def __str__(self):
        return self.name
from django.db import models
from d