# -*- coding: utf-8 -*-
from random import choice, randint, uniform
from datetime import timedelta
from decimal import Decimal
from django.db import transaction
from django.core.management.base import BaseCommand
from django.utils import timezone
from faker import Factory
from core import models
class Command(BaseCommand):
help = 'Generates fake children and related entries.'
def __init__(self, *args, **kwargs):
super(Command, self).__init__(*args, **kwargs)
self.faker = Factory.create()
self.child = None
self.weight = None
self.time = None
self.time_now = timezone.localtime()
def add_arguments(self, parser):
parser.add_argument(
'--children',
dest='children',
default=1,
help='The number of fake children to create.'
)
parser.add_argument(
'--days',
dest='days',
default=31,
help='How many days of fake entries to create.'
)
def handle(self, *args, **kwargs):
verbosity = int(kwargs['verbosity'])
children = int(kwargs['children']) or 1
days = int(kwargs['days']) or 31
birth_date = (timezone.localtime() - timedelta(days=days))
for i in range(0, children):
self.child = models.Child.objects.create(
first_name=self.faker.first_name(),
last_name=self.faker.last_name(),
birth_date=birth_date
)
self.child.save()
self._add_child_data()
if verbosity > 0:
self.stdout.write(
self.style.SUCCESS('Successfully added fake data.')
)
@transaction.atomic
def _add_child_data(self):
"""
Adds fake data for child from child.birth_date to now. The fake data
follows a semi-regular pattern of sleep, feed, change, tummy time,
change, tummy time, sleep, etc.
:returns:
"""
self.time = self.child.birth_date
self.temperature = round(uniform(95.0, 102.0), 2)
self._add_temperature_entry()
self.weight = round(uniform(8.0, 12.0), 2)
self._add_weight_entry()
last_weight_entry_time = self.time
self._add_note_entry()
while self.time < self.time_now:
self._add_sleep_entry()
if choice([True, False]):
self._add_diaperchange_entry()
self._add_feeding_entry()
self._add_diaperchange_entry()
if choice([True, False]):
self._add_tummytime_entry()
if choice([True, False]):
self._add_diaperchange_entry()
self._add_tummytime_entry()
if choice([True, False]):
self._add_temperature_entry()
if (self.time - last_weight_entry_time).days > 6:
self._add_weight_entry()
last_weight_entry_time = self.time
@transaction.atomic
def _add_diaperchange_entry(self):
"""
Add a Diaper Change entry and advance self.time.
:returns:
"""
solid = choice([True, False, False, False])
wet = choice([True, False])
color = ''
if solid:
color = choice(
models.DiaperChange._meta.get_field('color').choices)[0]
if not wet and not solid:
wet = True
amount = Decimal('%d.%d' % (randint(0, 6), randint(1, 9)))
time = self.time + timedelta(minutes=randint(1, 60))
notes = ''
if choice([True, False, False, False]):
notes = ' '.join(self.faker.sentences(randint(1, 5)))
if time < self.time_now:
models.DiaperChange.objects.create(
child=self.child,
time=time,
wet=wet,
solid=solid,
color=color,
amount=amount,
notes=notes
).save()
self.time = time
@transaction.atomic
def _add_feeding_entry(self):
"""
Add a Feeding entry and advance self.time.
:returns:
"""
method = choice(models.Feeding._meta.get_field('method').choices)[0]
amount = None
if method == 'bottle':
amount = Decimal('%d.%d' % (randint(0, 6), randint(0, 9)))
start = self.time + timedelta(minutes=randint(1, 60))
end = start + timedelta(minutes=randint(5, 20))
notes = ''
if choice([True, False, False, False]):
notes = ' '.join(self.faker.sentences(randint(1, 5)))
if end < self.time_now:
models.Feeding.objects.create(
child=self.child,
start=start,
end=end,
type=choice(models.Feeding._meta.get_field('type').choices)[0],
method=method,
amount=amount,
notes=notes
).save()
self.time = end
@transaction.atomic
def _add_note_entry(self):
"""
Add a Note entry.
:returns:
"""
note = self.faker.sentence()
models.Note.objects.create(child=self.child, note=note).save()
@transaction.atomic
def _add_sleep_entry(self):
"""
Add a Sleep entry and advance self.time. Between the hours of 18 and 6,
extend the minimum and maximum sleep duration settings.
:returns:
"""
if self.time.hour < 6 or self.time.hour > 18:
minutes = randint(60 * 2, 60 * 6)
else:
minutes = randint(30, 60 * 2)
end = self.time + timedelta(minutes=minutes)
notes = ''
if choice([True, False, False, False]):
notes = ' '.join(self.faker.sentences(randint(1, 5)))
if end < self.time_now:
models.Sleep.objects.create(
child=self.child,
start=self.time,
end=end,
notes=notes
).save()
self.time = end
@transaction.atomic
def _add_temperature_entry(self):
"""
Add a Temperature entry. This assumes a weekly interval.
:returns:
"""
self.temperature = round(uniform(95.0, 102.0), 2)
notes = ''
if choice([True, False, False, False]):
notes = ' '.join(self.faker.sentences(randint(1, 5)))
models.Temperature.objects.create(
child=self.child,
temperature=self.temperature,
time=self.time,
notes=notes
).save()
@transaction.atomic
def _add_tummytime_entry(self):
"""
Add a Tummy time entry and advance self.time.
:returns:
"""
milestone = ''
if choice([True, False]):
milestone = self.faker.sentence()
start = self.time + timedelta(minutes=randint(1, 60))
end = start + timedelta(minutes=randint(0, 10), seconds=randint(0, 59))
if (end - start).seconds < 20:
end = start + timedelta(minutes=1, seconds=30)
if end < self.time_now:
models.TummyTime.objects.create(
child=self.child,
start=start,
end=end,
milestone=milestone
).save()
self.time = end
@transaction.atomic
def _add_weight_entry(self):
"""
Add a Weight entry. This assumes a weekly interval.
:returns:
"""
self.weight += uniform(0.1, 0.3)
notes = ''
if choice([True, False, False, False]):
notes = ' '.join(self.faker.sentences(randint(1, 5)))
models.Weight.objects.create(
child=self.child,
weight=round(self.weight, 2),
date=self.time.date(),
notes=notes
).save()