I want to generate automatic random numbers in a blank field while saving it in django.
EDIT
The random numbers must be unique.
Simply, I made a random number by random.randint in python. then as i need uniqe number, so i query this number to database, if this number is already exist, then i make again random by while loop.
random_num = random.randint(2345678909800, 9923456789000)
uniqe_confirm = Order.objects.filter(order_id=random_num)
while uniqe_confirm:
random_num = random.randint(2345678909800, 9923456789000)
if not Order.objects.filter(order_id=random_num):
break
EDIT: Changed solution to make random number unique and to use Django's make_random_password
function. Note the below assumes you are storing the random number in a field called
temp_password in a model UserProfile that is an extension of the User model.
random_number = User.objects.make_random_password(length=10, allowed_chars='123456789')
while User.objects.filter(userprofile__temp_password=random_number):
random_number = User.objects.make_random_password(length=10, allowed_chars='123456789')
Also note that you can store the random code as a combination of letters and numbers as well. The
default value for allowed_chars is a string of letters and numbers minus a few that tend to cause
confusion among users (1, l, etc.)
More about Django's make_random_password function: https://docs.djangoproject.com/en/dev/topics/auth/#manager-functions
OLD:
import random
n = random.randint(a,b) # returns a random integer
in the example above a <= n <= b
Many more types of random numbers in the random class: http://docs.python.org/library/random.html
It is more a python thing than a django thing.
You can find all the information about Random class here
Good luck!