feat: add types for model fields

app/base/models/account.py

@@ -1,12 +1,17 @@
 from django.db import models
 
 from app.base.forms.fields import CurrencyField
-from app.base.models.person import Person
+
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    from decimal import Decimal
+    from app.base.models.person import Person
 
 
 class Account(models.Model):
-    user = models.OneToOneField(Person, on_delete=models.CASCADE)
+    user: 'models.OneToOneField[Person]' = models.OneToOneField(
-    balance = CurrencyField('Guthaben')
+        'Person', on_delete=models.CASCADE)
+    balance: 'models.DecimalField[Decimal]' = CurrencyField('Guthaben')
     locked = models.BooleanField('Gesperrt', default=False)
 
     class Meta:

app/base/models/booking.py

@@ -6,13 +6,11 @@ from django.urls import reverse
 from app.base.forms.fields import DateTimeField, TextField
 from app.base.forms.utils import datetime_now
 
-from datetime import datetime
 from typing import TYPE_CHECKING
 if TYPE_CHECKING:
     from django.db.models import OuterRef
-    from app.base.models.person import Person
+    from app.base.models import Person, BookingType
-    from app.base.models.booking_type import BookingType
+    from datetime import datetime, timedelta  # noqa F401
-    from datetime import timedelta  # noqa F401
 
 
 class Booking(models.Model):
@@ -20,9 +18,12 @@ class Booking(models.Model):
         'BookingType', on_delete=models.PROTECT, verbose_name='Art')
     user: 'models.ForeignKey[Person]' = models.ForeignKey(
         'Person', on_delete=models.CASCADE, verbose_name='Nutzer:in')
-    begin_time = DateTimeField('Beginn', default=datetime_now)
+    begin_time: 'models.DateTimeField[datetime]' = DateTimeField(
-    end_time = DateTimeField('Ende', blank=True, null=True)
+        'Beginn', default=datetime_now)
-    comment = TextField('Kommentar', blank=True)
+    end_time: 'models.DateTimeField[datetime|None]' = DateTimeField(
+        'Ende', blank=True, null=True)
+    comment: 'models.TextField[str]' = TextField(
+        'Kommentar', blank=True)
 
     class Meta:
         verbose_name = 'Buchung'

app/base/models/booking_type.py

@@ -10,7 +10,7 @@ from typing import Iterable
 class BookingType(models.Model):
     key = models.CharField('UUID', primary_key=True, max_length=20)
     label = models.CharField('Bezeichnung', max_length=200)
-    price = CurrencyField('Preis (€)')
+    price: 'models.DecimalField[Decimal]' = CurrencyField('Preis (€)')
     interval = models.IntegerField('Intervall (Min)', default=60)
     is_checkin = models.BooleanField('Ist Eincheck-Option', default=False)
 

app/base/models/course.py

@@ -2,14 +2,20 @@ from django.db import models
 from django.urls import reverse
 
 from app.base.forms.fields import TextField
-from app.base.models.course_visit import CourseVisit
+
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    from app.base.models import CourseVisit
 
 
 class Course(models.Model):
-    instructed: models.QuerySet[CourseVisit]
     title = models.CharField('Titel', max_length=280)
     mandatory = models.BooleanField('Braucht jeder?', default=False)
-    description = TextField('Beschreibung', blank=True)
+    description: 'models.TextField[str]' = TextField(
+        'Beschreibung', blank=True)
+
+    # related_name
+    instructed: 'models.QuerySet[CourseVisit]'
 
     class Meta:
         verbose_name = 'Einweisung'

app/base/models/course_visit.py

@@ -6,22 +6,22 @@ from app.base.forms.fields import DateField
 from datetime import date
 from typing import TYPE_CHECKING
 if TYPE_CHECKING:
-    from app.base.models.course import Course
+    from app.base.models import Course, Person
-    from app.base.models.person import Person
 
 
 class CourseVisit(models.Model):
     course: 'models.ForeignKey[Course]' = models.ForeignKey(
-        'Course', on_delete=models.CASCADE,
+        'Course', on_delete=models.CASCADE, related_name='visits',
-        related_name='visits', verbose_name='Einweisung')
+        verbose_name='Einweisung')
     participant: 'models.ForeignKey[Person]' = models.ForeignKey(
-        'Person', on_delete=models.CASCADE,
+        'Person', on_delete=models.CASCADE, related_name='courses',
-        related_name='courses', verbose_name='Wer wurde eingewiesen?')
+        verbose_name='Wer wurde eingewiesen?')
     teacher: 'models.ForeignKey[Person]|models.ForeignKey[None]' =\
         models.ForeignKey(
              'Person', on_delete=models.SET_NULL, blank=True, null=True,
              related_name='instructed', verbose_name='Durchgeführt von')
-    date = DateField('Datum', default=date.today)
+    date: 'models.DateField[date]' = DateField(
+        'Datum', default=date.today)
 
     class Meta:
         verbose_name = 'Teilnahme'

app/base/models/note.py

@@ -2,10 +2,15 @@ from django.db import models
 
 from app.base.forms.fields import TextField
 
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    from app.base.models import Person
+
 
 class Note(models.Model):
-    user = models.OneToOneField('Person', on_delete=models.CASCADE)
+    user: 'models.OneToOneField[Person]' = models.OneToOneField(
-    text = TextField('Notiz', blank=True)
+        'Person', on_delete=models.CASCADE)
+    text: 'models.TextField[str]' = TextField('Notiz', blank=True)
 
     class Meta:
         verbose_name = 'Notiz'

app/base/models/person.py

@@ -17,15 +17,16 @@ class Person(models.Model):
 
     first_name = models.CharField('Vorname', max_length=200)
     last_name = models.CharField('Nachname', max_length=200)
-    email = models.EmailField('Email', blank=True, null=True)
+    birth_date: 'models.DateField[date]' = DateField('Geburtsdatum')
-    phone = models.CharField('Telefon', max_length=200, blank=True, null=True)
-    birth_date = DateField('Geburtsdatum')
-    zip_code = models.CharField('PLZ', max_length=10)
-    city = models.CharField('Stadt', max_length=200)
     street = models.CharField('Straße', max_length=200)
     house_nr = models.CharField('Hausnummer', max_length=10)
+    zip_code = models.CharField('PLZ', max_length=10)
+    city = models.CharField('Stadt', max_length=200)
+    email = models.EmailField('Email', blank=True, null=True)
+    phone = models.CharField('Telefon', max_length=200, blank=True, null=True)
 
-    identified = models.BooleanField('Ausweis vorgezeigt', default=False)
+    identified = models.BooleanField(
+        'Ausweis vorgezeigt', default=False)
     agreed_to_terms_of_service = models.BooleanField(
         'Nutzungsbedingungen zugestimmt', default=False)
 

app/base/models/trait.py

@@ -6,7 +6,8 @@ from app.base.forms.fields import TextField
 class Trait(models.Model):
     key = models.CharField('UUID', primary_key=True, max_length=20)
     label = models.CharField('Label', max_length=200)
-    description = TextField('Beschreibung', blank=True)
+    description: 'models.TextField[str]' = TextField(
+        'Beschreibung', blank=True)
 
     class Meta:
         verbose_name = 'Attribut'

app/base/models/trait_mapping.py

@@ -6,8 +6,7 @@ from app.base.forms.fields import DateField
 from datetime import date
 from typing import TYPE_CHECKING
 if TYPE_CHECKING:
-    from app.base.models.person import Person
+    from app.base.models import Person, Trait
-    from app.base.models.trait import Trait
 
 
 class TraitMapping(models.Model):
@@ -16,8 +15,10 @@ class TraitMapping(models.Model):
         verbose_name='Werkstattnutzer:in')
     trait: 'models.ForeignKey[Trait]' = models.ForeignKey(
         'Trait', on_delete=models.CASCADE, verbose_name='Attribut')
-    valid_from = DateField('Gültig von', default=date.today)
+    valid_from: 'models.DateField[date]' = DateField(
-    valid_until = DateField('Gültig bis', blank=True, null=True)
+        'Gültig von', default=date.today)
+    valid_until: 'models.DateField[date|None]' = DateField(
+        'Gültig bis', blank=True, null=True)
 
     class Meta:
         verbose_name = 'Attributzuweisung'

app/base/models/transaction.py

@@ -3,18 +3,27 @@ from django.urls import reverse
 
 from app.base.forms.fields import CurrencyField, DateTimeField
 from app.base.forms.utils import datetime_now
-from app.base.models.account import Account
+
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    from datetime import datetime
+    from decimal import Decimal
+    from app.base.models import Account, Booking
 
 
 class Transaction(models.Model):
-    account = models.ForeignKey(Account, on_delete=models.CASCADE,
+    account: 'models.ForeignKey[Account]' = models.ForeignKey(
-                                verbose_name='Konto')
+        'Account', on_delete=models.CASCADE, verbose_name='Konto')
-    amount = CurrencyField('Betrag')
+    amount: 'models.DecimalField[Decimal]' = CurrencyField(
-    booking = models.OneToOneField('Booking', on_delete=models.CASCADE,
+        'Betrag')
-                                   verbose_name='Zugehörige Zeitbuchung',
+    booking: 'models.OneToOneField[Booking]|models.OneToOneField[None]' = \
-                                   null=True, blank=True, default=None)
+        models.OneToOneField('Booking', on_delete=models.CASCADE,
-    description = models.CharField('Beschreibung', max_length=500)
+                             verbose_name='Zugehörige Zeitbuchung',
-    time_stamp = DateTimeField('Datum / Uhrzeit', editable=False)
+                             blank=True, null=True, default=None)
+    description = models.CharField(
+        'Beschreibung', max_length=500)
+    time_stamp: 'models.DateTimeField[datetime]' = DateTimeField(
+        'Datum / Uhrzeit', editable=False)
 
     class Meta:
         verbose_name = 'Transaktion'