How to create Profile.username with faker?

I wanna create random value with faker wrapper, however, I can’t get extract any value from it.

# not working
username = factory.Faker('profile')['username']

Has anyone done this before?

[rbarrois]

It’s a bit hidden, but Faker has a user_name provider: http://faker.readthedocs.io/en/latest/providers/faker.providers.internet.html?highlight=user_name

=> You can use factory.Faker('user_name') 😉

[etiology]

Well I have a not super great solution. It adds an extra call so maybe someone can clean it up:

import factory
from faker import Faker

fake = Faker()

def generate_username(*args):
    """ returns a random username """
    return fake.profile(fields=['username'])['username']

class Profile(object):
    """ Simple Profile model """
    def __init__(self, **kwargs):
        self.username = kwargs.get('username')

class ProfileFactory(factory.Factory):
    """ Generate random profile instances """
    class Meta:
        model = Profile
    username = factory.LazyAttribute(generate_username)

Test

for x in range(10):
    a = ProfileFactory()
    print(a.username)

Output:

reeselinda
arroyozachary
gonzalescatherine
xcarpenter
jcohen
zsimmons
stokestyler
ofletcher
monicaphelps
johnharris

So the reason I went with a LazyAttribute is that if you don’t delay the call of a function in the factory then the items generated won’t be random. In my experience the first ‘username’ will be random but the rest will just repeat it. Given this behavior I decided to delay the function call until instantiation so that each instance gets a random name