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from django.db import models
class Person(models.Model):
rfid = models.CharField(max_length=256)
name = models.CharField(max_length=140, unique=True)
created = models.DateTimeField(auto_now_add=True)
def __str__(self):
return f"Person {self.name}"
class Thing(models.Model):
rfid = models.CharField(max_length=256, unique=True)
name = models.CharField(max_length=140)
owner = models.ForeignKey(to=Person,
on_delete=models.PROTECT, related_name='owner',
null=True, blank=True)
description = models.TextField(max_length=9999, blank=True)
created = models.DateTimeField(auto_now_add=True)
lent = models.BooleanField(default=False)
image = models.ImageField()
def __str__(self):
return f"Thing {self.name}"
class Lending(models.Model):
purpose = models.CharField(max_length=1000, unique=True)
begin = models.DateTimeField(auto_now=True)
deadline = models.DateTimeField()
returned = models.DateTimeField(null=True, blank=True) # if returned is empty -> leding finished
lender = models.ForeignKey(to=Person,
on_delete=models.SET_NULL,related_name='borrows',null=True)
thing = models.ForeignKey(to=Thing, on_delete=models.CASCADE,
related_name='ilendings')
def __str__(self):
return f"Lending from {self.begin}, purpose: {self.purpose}, deadline: {self.deadline}"
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