mybuddy/core/models.py

247 lines
7.3 KiB
Python

# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from datetime import timedelta
from django.core.exceptions import ValidationError
from django.db import models
from django.template.defaultfilters import slugify
from django.utils import timezone
from django.utils.timesince import timesince
def validate_duration(model, max_duration=timedelta(hours=24)):
"""
Basic sanity checks for models with a duration
:param model: a model instance with 'start' and 'end' attributes
:param max_duration: maximum allowed duration between start and end time
:return:
"""
if model.start and model.end:
if model.start > model.end:
raise ValidationError('Start time must come before end time')
if model.end - model.start > max_duration:
raise ValidationError('Duration too long (%(timesince)s)', params={
'timesince': timesince(model.start, model.end)})
class Child(models.Model):
model_name = 'child'
first_name = models.CharField(max_length=255)
last_name = models.CharField(max_length=255)
birth_date = models.DateField(blank=False, null=False)
slug = models.SlugField(max_length=100, unique=True, editable=False)
objects = models.Manager()
class Meta:
default_permissions = ('view', 'add', 'change', 'delete')
ordering = ['last_name', 'first_name']
verbose_name_plural = 'Children'
def __str__(self):
return '{} {}'.format(self.first_name, self.last_name)
def save(self, *args, **kwargs):
self.slug = slugify(self)
super(Child, self).save(*args, **kwargs)
def name(self, reverse=False):
if reverse:
return '{}, {}'.format(self.last_name, self.first_name)
return '{} {}'.format(self.first_name, self.last_name)
class DiaperChange(models.Model):
model_name = 'diaperchange'
child = models.ForeignKey('Child', related_name='diaper_change')
time = models.DateTimeField(blank=False, null=False)
wet = models.BooleanField()
solid = models.BooleanField()
color = models.CharField(max_length=255, blank=True, choices=[
('black', 'Black'),
('brown', 'Brown'),
('green', 'Green'),
('yellow', 'Yellow'),
])
objects = models.Manager()
class Meta:
default_permissions = ('view', 'add', 'change', 'delete')
ordering = ['-time']
def __str__(self):
return 'Diaper Change'
def attributes(self):
attributes = []
if self.wet:
attributes.append(DiaperChange._meta.get_field('wet').name)
if self.solid:
attributes.append(DiaperChange._meta.get_field('solid').name)
if self.color:
attributes.append(self.color)
return attributes
class Feeding(models.Model):
model_name = 'feeding'
child = models.ForeignKey('Child', related_name='feeding')
start = models.DateTimeField(blank=False, null=False)
end = models.DateTimeField(blank=False, null=False)
duration = models.DurationField(null=True, editable=False)
type = models.CharField(max_length=255, choices=[
('breast milk', 'Breast milk'),
('formula', 'Formula'),
])
method = models.CharField(max_length=255, choices=[
('bottle', 'Bottle'),
('left breast', 'Left breast'),
('right breast', 'Right breast'),
])
amount = models.FloatField(blank=True, null=True)
objects = models.Manager()
class Meta:
default_permissions = ('view', 'add', 'change', 'delete')
ordering = ['-start']
def __str__(self):
return 'Feeding'
def save(self, *args, **kwargs):
if self.start and self.end:
self.duration = self.end - self.start
super(Feeding, self).save(*args, **kwargs)
def clean(self):
validate_duration(self)
class Note(models.Model):
model_name = 'note'
child = models.ForeignKey('Child', related_name='note')
note = models.TextField()
time = models.DateTimeField(auto_now=True)
objects = models.Manager()
class Meta:
default_permissions = ('view', 'add', 'change', 'delete')
ordering = ['-time']
def __str__(self):
return 'Note'
class Sleep(models.Model):
model_name = 'sleep'
child = models.ForeignKey('Child', related_name='sleep')
start = models.DateTimeField(blank=False, null=False)
end = models.DateTimeField(blank=False, null=False)
duration = models.DurationField(null=True, editable=False)
objects = models.Manager()
class Meta:
default_permissions = ('view', 'add', 'change', 'delete')
ordering = ['-start']
verbose_name_plural = 'Sleep'
def __str__(self):
return 'Sleep'
def save(self, *args, **kwargs):
if self.start and self.end:
self.duration = self.end - self.start
super(Sleep, self).save(*args, **kwargs)
def clean(self):
validate_duration(self)
class Timer(models.Model):
model_name = 'timer'
name = models.CharField(max_length=255, null=True, blank=True)
start = models.DateTimeField(
default=timezone.now,
blank=False,
verbose_name='Start Time'
)
end = models.DateTimeField(blank=True, null=True, editable=False)
duration = models.DurationField(null=True, editable=False)
active = models.BooleanField(default=True, editable=False)
user = models.ForeignKey('auth.User', related_name='timers')
objects = models.Manager()
class Meta:
default_permissions = ('view', 'add', 'change', 'delete')
ordering = ['-active', '-start', '-end']
def __str__(self):
return self.name or 'Timer #{}'.format(self.id)
@classmethod
def from_db(cls, db, field_names, values):
instance = super(Timer, cls).from_db(db, field_names, values)
if not instance.duration:
instance.duration = timezone.now() - instance.start
return instance
def restart(self):
"""Restart the timer."""
self.start = timezone.now()
self.end = None
self.duration = None
self.active = True
self.save()
def stop(self, end=None):
"""Stop the timer."""
if not self.end:
end = timezone.now()
self.end = end
self.save()
def save(self, *args, **kwargs):
self.active = self.end is None
self.name = self.name or None
if self.start and self.end:
self.duration = self.end - self.start
else:
self.duration = None
super(Timer, self).save(*args, **kwargs)
def clean(self):
validate_duration(self)
class TummyTime(models.Model):
model_name = 'tummytime'
child = models.ForeignKey('Child', related_name='tummy_time')
start = models.DateTimeField(blank=False, null=False)
end = models.DateTimeField(blank=False, null=False)
duration = models.DurationField(null=True, editable=False)
milestone = models.CharField(max_length=255, blank=True)
objects = models.Manager()
class Meta:
default_permissions = ('view', 'add', 'change', 'delete')
ordering = ['-start']
def __str__(self):
return 'Tummy Time'
def save(self, *args, **kwargs):
if self.start and self.end:
self.duration = self.end - self.start
super(TummyTime, self).save(*args, **kwargs)
def clean(self):
validate_duration(self)