319 lines
9.2 KiB
Python
319 lines
9.2 KiB
Python
import datetime
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import pathlib
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import uuid
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from django.conf import settings
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from django.core.validators import FileExtensionValidator, validate_slug
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from django.db import models, transaction
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from django.urls import reverse
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from django.utils.text import format_lazy
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from django.utils.translation import gettext_lazy as _
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class UserModel(models.Model):
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user = models.ForeignKey(
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settings.AUTH_USER_MODEL,
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on_delete=models.CASCADE,
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verbose_name=_("User"),
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editable=False,
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)
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class Meta:
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abstract = True
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class CustomModel(UserModel):
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@property
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def adding(self):
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return self._state.adding
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class Meta:
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abstract = True
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def get_path(instance, filename):
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return pathlib.Path(
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"user",
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str(instance.user.username),
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instance._meta.model_name,
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str(instance.pk),
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).with_suffix(".pdf")
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class Account(CustomModel):
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id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
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name = models.CharField(max_length=64, default=_("Account"), verbose_name=_("Name"))
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uicon = models.CharField(
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max_length=2,
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default="🏦",
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verbose_name=_("Icon"),
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)
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default = models.BooleanField(default=False, verbose_name=_("Default"))
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def save(self, *args, **kwargs):
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if self.default:
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for ac in Account.objects.filter(user=self.user, default=True):
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ac.default = False
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ac.save()
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super().save(*args, **kwargs)
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def __str__(self):
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return str(self.name)
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def get_absolute_url(self):
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return reverse("account", kwargs={"pk": self.pk})
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def get_delete_url(self):
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return reverse("del_account", kwargs={"pk": self.pk})
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@property
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def transactions(self):
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return Transaction.objects.filter(account=self)
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@property
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def snapshots(self):
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return Snapshot.objects.filter(account=self)
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class Meta:
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ordering = ["-default", "name"]
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verbose_name = _("Account")
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verbose_name_plural = _("Accounts")
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class AccountModel(CustomModel):
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account = models.ForeignKey(
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Account,
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on_delete=models.CASCADE,
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verbose_name=_("Account"),
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)
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class Meta:
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abstract = True
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class Category(CustomModel):
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id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
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name = models.CharField(
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max_length=64, default=_("Category"), verbose_name=_("Name")
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)
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uicon = models.CharField(
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max_length=2,
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default="📂",
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verbose_name=_("Icon"),
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)
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budget = models.BooleanField(default=True, verbose_name=_("Budget"))
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def __str__(self):
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return str(self.name)
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def get_absolute_url(self):
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return reverse("category", kwargs={"pk": self.pk})
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def get_delete_url(self):
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return reverse("del_category", kwargs={"pk": self.pk})
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@property
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def transactions(self):
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return Transaction.objects.filter(category=self)
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class Meta:
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ordering = ["name"]
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verbose_name = _("Category")
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verbose_name_plural = _("Categories")
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class Snapshot(AccountModel):
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id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
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date = models.DateField(default=datetime.date.today, verbose_name=_("End date"))
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start_date = models.DateField(
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default=datetime.date.today, verbose_name=_("Start date")
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)
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value = models.DecimalField(
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max_digits=12, decimal_places=2, default=0, verbose_name=_("End value")
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)
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start_value = models.DecimalField(
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max_digits=12, decimal_places=2, default=0, verbose_name=_("Start value")
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)
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diff = models.DecimalField(
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max_digits=12,
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decimal_places=2,
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default=0,
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verbose_name=_("Difference"),
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editable=False,
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)
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sum = models.DecimalField(
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max_digits=12,
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decimal_places=2,
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default=0,
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verbose_name=_("Transaction difference"),
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editable=False,
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)
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file = models.FileField(
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upload_to=get_path,
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validators=[FileExtensionValidator(["pdf"])],
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verbose_name=_("File"),
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max_length=256,
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blank=True,
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default="",
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)
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def __str__(self):
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desc = _("%(date)s statement") % {"date": self.date}
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if hasattr(self, "account"):
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return f"{desc} – {self.account}"
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return desc
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def save(self, *args, **kwargs):
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if Snapshot.objects.filter(id=self.id).exists():
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_prever = Snapshot.objects.get(id=self.id)
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if _prever.file and _prever.file != self.file:
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pathlib.Path(_prever.file.path).unlink(missing_ok=True)
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with transaction.atomic():
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for trans in self.transaction_set.all():
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trans.save()
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self.diff = self.value - self.start_value
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self.sum = (
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self.transaction_set.aggregate(sum=models.Sum("value")).get("sum", 0) or 0
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)
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super().save(*args, **kwargs)
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def update_sum(self):
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self.sum = (
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self.transaction_set.aggregate(sum=models.Sum("value")).get("sum", 0) or 0
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)
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super().save()
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def delete(self, *args, **kwargs):
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if self.file:
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self.file.delete()
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super().delete(*args, **kwargs)
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def get_absolute_url(self):
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return reverse("snapshot", kwargs={"pk": self.pk})
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def get_delete_url(self):
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return reverse("del_snapshot", kwargs={"pk": self.pk})
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class Meta:
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ordering = ["-date", "account"]
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verbose_name = _("Statement")
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verbose_name_plural = _("Statements")
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class Transaction(CustomModel):
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id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
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name = models.CharField(
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max_length=256, default=_("Transaction"), verbose_name=_("Name")
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)
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description = models.TextField(null=True, blank=True, verbose_name=_("Description"))
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value = models.DecimalField(
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max_digits=12, decimal_places=2, default=0, verbose_name=_("Value")
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)
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date = models.DateField(default=datetime.date.today, verbose_name=_("Date"))
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real_date = models.DateField(blank=True, null=True, verbose_name=_("Real date"))
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trader = models.CharField(
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max_length=128, blank=True, null=True, verbose_name=_("Trader")
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)
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payment = models.CharField(
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max_length=128, blank=True, null=True, verbose_name=_("Payment")
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)
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category = models.ForeignKey(
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Category,
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on_delete=models.SET_NULL,
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blank=True,
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null=True,
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verbose_name=_("Category"),
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)
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snapshot = models.ForeignKey(
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Snapshot,
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on_delete=models.CASCADE,
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verbose_name=_("Statement"),
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)
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account = models.ForeignKey(
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Account,
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on_delete=models.CASCADE,
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verbose_name=_("Account"),
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editable=False,
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)
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def save(self, *args, **kwargs):
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if Transaction.objects.filter(pk=self.pk):
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prev_self = Transaction.objects.get(pk=self.pk)
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else:
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prev_self = None
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self.account = self.snapshot.account
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super().save(*args, **kwargs)
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if prev_self is not None:
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prev_self.snapshot.update_sum()
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self.snapshot.update_sum()
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def __str__(self):
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return f"{self.date} – {self.name}"
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def get_absolute_url(self):
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return reverse("transaction", kwargs={"pk": self.pk})
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def get_delete_url(self):
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return reverse("del_transaction", kwargs={"pk": self.pk})
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@property
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def invoices(self):
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return Invoice.objects.filter(transaction=self)
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@property
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def has_invoice(self):
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return self.invoices.count() > 0
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class Meta:
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ordering = ["-date", "snapshot"]
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verbose_name = _("Transaction")
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verbose_name_plural = _("Transactions")
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class Invoice(CustomModel):
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id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
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name = models.CharField(
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max_length=256, default=_("Invoice"), verbose_name=_("Name")
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)
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file = models.FileField(
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upload_to=get_path,
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validators=[FileExtensionValidator(["pdf"])],
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verbose_name=_("File"),
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max_length=128,
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)
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transaction = models.ForeignKey(
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Transaction, on_delete=models.CASCADE, editable=False
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)
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def save(self, *args, **kwargs):
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if Invoice.objects.filter(id=self.id).exists():
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_prever = Invoice.objects.get(id=self.id)
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if _prever.file and _prever.file != self.file:
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pathlib.Path(_prever.file.path).unlink(missing_ok=True)
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super().save(*args, **kwargs)
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def __str__(self):
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if hasattr(self, "transaction"):
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return str(format_lazy("{} – {}", self.name, self.transaction.name))
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return str(self.name)
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def delete(self, *args, **kwargs):
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self.file.delete()
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super().delete(*args, **kwargs)
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def get_absolute_url(self):
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return reverse(
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"invoice", kwargs={"transaction_pk": self.transaction.pk, "pk": self.pk}
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)
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def get_delete_url(self):
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return reverse(
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"del_invoice", kwargs={"transaction_pk": self.transaction.pk, "pk": self.pk}
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)
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class Meta:
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verbose_name = _("Invoice")
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verbose_name_plural = _("Invoices")
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ordering = ["transaction", "name"]
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