87 lines
2.6 KiB
Python
87 lines
2.6 KiB
Python
from django.conf import settings
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from django.db import models
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from django.db.models.signals import post_delete
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from django.dispatch import receiver
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import os
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import json
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from datetime import date
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from map_location.fields import LocationField
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from app.fields import MonthField
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from common.form.img_with_preview import ThumbnailImageField
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def overwrite_img_upload(instance: 'Place', filename: str):
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id = instance.pk or (Place.objects.count() + 1)
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path = settings.MEDIA_ROOT / 'img' / f'{id}.jpg'
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if path.is_file():
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os.remove(path)
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return f'img/{id}.jpg'
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class Place(models.Model):
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created = models.DateTimeField('Erstellt', auto_now_add=True)
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updated = models.DateTimeField('Geändert', auto_now=True)
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address = models.CharField('Adresse', max_length=100)
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img = ThumbnailImageField('Bild', blank=True, null=True,
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upload_to=overwrite_img_upload) # type: ignore
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since = MonthField('Seit', blank=True, null=True)
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until = MonthField('Bis', blank=True, null=True)
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description = models.TextField('Beschreibung', blank=True, null=True)
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location = LocationField('Position', blank=True, null=True, options={
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'map': {
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'center': [52.52, 13.40],
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'zoom': 12,
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},
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})
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class Meta:
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verbose_name = 'Gebäude'
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verbose_name_plural = 'Gebäude'
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ordering = ['address']
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def __str__(self) -> str:
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return self.address
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@property
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def isVacant(self):
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if not self.until:
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return True
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now = date.today()
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year = int(self.until[:4])
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if year > now.year:
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return True
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return year == now.year and int((self.until + '-12')[5:7]) >= now.month
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def save(self, *args, **kwargs):
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rv = super().save(*args, **kwargs)
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Place.update_json()
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return rv
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def asJson(self) -> 'dict[str, str|list[float]|None]':
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return {
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'id': self.pk,
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'since': self.since,
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'until': self.until,
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'addr': self.address,
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'desc': self.description,
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'img': self.img.url if self.img else None,
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'loc': [round(self.location.lat, 6),
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round(self.location.long, 6)] if self.location else None,
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}
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@staticmethod
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def update_json():
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with open(settings.MEDIA_ROOT / 'data.json', 'w') as fp:
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json.dump([x.asJson() for x in Place.objects.all()
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if x.location and x.isVacant], fp)
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@receiver(post_delete, sender=Place)
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def on_delete_Place(sender, instance: 'Place', using, **kwargs):
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Place.update_json()
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