from django.db import models from .settings import ACCOUNTS class Volunteer(models.Model): realname = models.CharField(max_length=200, null=True) email = models.CharField(max_length=200, null=True) username = models.CharField(max_length=200, null=True) granted = models.BooleanField(null=True) @classmethod def set_granted(cl, key, b): obj = cl.objects.get(pk=key) obj.granted = b obj.save() class Meta: abstract = True class Project(Volunteer): name = models.CharField(max_length=200) start = models.DateField('Startdatum', null=True) end = models.DateField('Erwartetes Projektende', null=True) account = models.CharField('Kostenstelle', max_length=5, choices=ACCOUNTS.items(), null=True,) # the following Fields are not supposed to be editet by users pid = models.IntegerField(null=True, blank=True) end_mail_send = models.BooleanField(null=True) def save(self,*args,**kwargs): # is there a way to call super().save() only once? super().save(*args,*kwargs) self.pid = 10000 + self.pk super().save(*args,*kwargs) def __str__(self): return f"{self.pid} {self.name}" class HonoraryCertificate(Volunteer): request_url = models.CharField(max_length=2000) project = models.ForeignKey(Project, null = True, on_delete = models.SET_NULL) def __str__(self): return "Certificate for " + self.realname #abstract base class for Library, IFG, ... class Grant(Volunteer): cost = models.CharField(max_length=10) notes = models.CharField(max_length=500) class Meta: abstract = True TYPE_CHOICES = {'BIB': 'Bibliotheksstipendium', 'ELIT': 'eLiteraturstipendium', 'SOFT': 'Softwarestipendium', 'VIS': 'Visitenkarten', 'LIST': 'Mailingliste', 'MAIL': 'E-Mail-Adresse', 'IFG': 'Kostenübernahme IFG-Anfrage', 'LIT': 'Literaturstipendium',} # same model is used for Library, ELitStip and Software! class Library(Grant): type = models.CharField( max_length=4, choices=TYPE_CHOICES.items(), #attention: actually only BIB, ELIT, SOFT should be used here default='LIB', ) library = models.CharField(max_length=200) duration = models.CharField(max_length=100) def __str__(self): return self.library class IFG(Grant): url = models.CharField(max_length=2000) def __str__(self): return "IFG-Anfrage von " + self.realname