Files
PyRIGS/models.py
2019-01-05 19:56:25 +00:00

73 lines
2.4 KiB
Python

from django.db import models
from django.db.models.signals import post_save
from django.dispatch import receiver
from django.urls import reverse
class AssetCategory(models.Model):
class Meta:
verbose_name = 'Asset Category'
verbose_name_plural = 'Asset Categories'
name = models.CharField(max_length=80)
def __str__(self):
return self.name
class AssetStatus(models.Model):
class Meta:
verbose_name = 'Asset Status'
verbose_name_plural = 'Asset Statuses'
name = models.CharField(max_length=80)
def __str__(self):
return self.name
class Supplier(models.Model):
name = models.CharField(max_length=80)
def __str__(self):
return self.name
class BaseAsset(models.Model):
class Meta:
abstract = True
parent = models.ForeignKey(to='self', related_name='asset_parent', blank=True, null=True, on_delete=models.SET_NULL)
asset_id = models.CharField(max_length=10)
description = models.CharField(max_length=120)
category = models.ForeignKey(to=AssetCategory, on_delete=models.CASCADE)
status = models.ForeignKey(to=AssetStatus, on_delete=models.CASCADE)
serial_number = models.CharField(max_length=150, blank=True)
purchased_from = models.ForeignKey(to=Supplier, on_delete=models.CASCADE, blank=True, null=True)
date_acquired = models.DateField()
date_sold = models.DateField(blank=True, null=True)
purchase_price = models.DecimalField(blank=True, null=True, decimal_places=2, max_digits=10)
salvage_value = models.DecimalField(blank=True, null=True, decimal_places=2, max_digits=10)
comments = models.TextField(blank=True)
next_sched_maint = models.DateField(blank=True, null=True)
# Cable assets
is_cable = models.BooleanField(default=False)
length = models.DecimalField(decimal_places=1, max_digits=10, blank=True, null=True)
def get_absolute_url(self):
return reverse('asset_detail', kwargs={'pk': self.pk})
def __str__(self):
return str(self.asset_id) + ' - ' + self.description
# Automatically updates Asset.asset_id to Asset.pk if none is given by the user
@receiver(post_save, sender=Asset)
def update_asset_id(sender, instance, **kwargs):
post_save.disconnect(update_asset_id, sender=sender)
if not instance.asset_id:
instance.asset_id = instance.pk
instance.save()
post_save.connect(update_asset_id, sender=sender)