init
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88
backend/configuration/models.py
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88
backend/configuration/models.py
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from django.db import models
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from django.core.exceptions import ValidationError
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from django.core.validators import RegexValidator
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from django.conf import settings
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class AppConfig(models.Model):
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bank_account = models.CharField(
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max_length=255,
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null=True,
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blank=True,
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validators=[
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RegexValidator(
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regex=r'^(\d{0,6}-)?\d{10}/\d{4}$',
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message=(
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"Zadejte platné číslo účtu ve formátu [prefix-]číslo_účtu/kód_banky, "
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"např. 1234567890/0100 nebo 123-4567890/0100."
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),
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code='invalid_bank_account'
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)
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],
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)
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sender_email = models.EmailField()
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# ---- New configurable site settings ----
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background_image = models.ImageField(
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upload_to="config/",
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null=True,
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blank=True,
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help_text="Obrázek pozadí webu (nepovinné)."
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)
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logo = models.ImageField(
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upload_to="config/",
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null=True,
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blank=True,
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help_text="Logo webu (transparentní PNG doporučeno)."
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)
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variable_symbol = models.PositiveIntegerField(
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null=True,
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blank=True,
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help_text="Výchozí variabilní symbol pro platby (pokud není specifikováno jinde)."
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)
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max_reservations_per_event = models.PositiveIntegerField(
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default=1,
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help_text="Maximální počet rezervací (slotů) povolených pro jednoho uživatele na jednu akci."
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)
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contact_phone = models.CharField(
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max_length=50,
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null=True,
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blank=True,
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help_text="Kontaktní telefon veřejně zobrazený na webu."
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)
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contact_email = models.EmailField(
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null=True,
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blank=True,
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help_text="Kontaktní e-mail pro veřejnost (může se lišit od odesílací adresy)."
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)
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last_changed_by = models.OneToOneField(
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settings.AUTH_USER_MODEL,
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verbose_name="Kdo naposled udělal změny.",
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on_delete=models.SET_NULL, # 🔄 Better than CASCADE to preserve data
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related_name="app_config",
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null=True,
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blank=True
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)
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last_changed_at = models.DateTimeField(
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auto_now=True, # 🔄 Use auto_now to update on every save
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verbose_name="Kdy byly naposled udělany změny."
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)
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def save(self, *args, **kwargs):
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if not self.pk and AppConfig.objects.exists():
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raise ValidationError('Only one AppConfig instance allowed.')
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return super().save(*args, **kwargs)
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def __str__(self):
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return "App Configuration"
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@classmethod
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def get_instance(cls):
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return cls.objects.first()
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# Usage:
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# config = AppConfig.get_instance()
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# if config:
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# print(config.bank_account)
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