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121 lines
3.4 KiB
Python
121 lines
3.4 KiB
Python
from __future__ import unicode_literals
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from django.utils.translation import ugettext as _
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from django.db import models
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from django.core.validators import MinValueValidator
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from supplier.models import SupplierPart
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from part.models import Part
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from InvenTree.models import InvenTreeTree
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from datetime import datetime
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class StockLocation(InvenTreeTree):
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""" Organization tree for StockItem objects
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"""
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@property
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def items(self):
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stock_list = self.stockitem_set.all()
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return stock_list
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class StockItem(models.Model):
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part = models.ForeignKey(Part, on_delete=models.CASCADE, related_name='locations')
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supplier_part = models.ForeignKey(SupplierPart, blank=True, null=True, on_delete=models.SET_NULL)
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location = models.ForeignKey(StockLocation, on_delete=models.CASCADE)
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quantity = models.PositiveIntegerField(validators=[MinValueValidator(0)])
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updated = models.DateField(auto_now=True)
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# last time the stock was checked / counted
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stocktake_date = models.DateField(blank=True, null=True)
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review_needed = models.BooleanField(default=False)
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# Stock status types
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ITEM_IN_STOCK = 10
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ITEM_INCOMING = 15
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ITEM_IN_PROGRESS = 20
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ITEM_COMPLETE = 25
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ITEM_ATTENTION = 50
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ITEM_DAMAGED = 55
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ITEM_DESTROYED = 60
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ITEM_STATUS_CODES = {
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ITEM_IN_STOCK: _("In stock"),
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ITEM_INCOMING: _("Incoming"),
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ITEM_IN_PROGRESS: _("In progress"),
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ITEM_COMPLETE: _("Complete"),
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ITEM_ATTENTION: _("Attention needed"),
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ITEM_DAMAGED: _("Damaged"),
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ITEM_DESTROYED: _("Destroyed")
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}
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status = models.PositiveIntegerField(
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default=ITEM_IN_STOCK,
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choices=ITEM_STATUS_CODES.items(),
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validators=[MinValueValidator(0)])
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notes = models.CharField(max_length=100, blank=True)
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# If stock item is incoming, an (optional) ETA field
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expected_arrival = models.DateField(null=True, blank=True)
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infinite = models.BooleanField(default=False)
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def stocktake(self, count):
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""" Perform item stocktake.
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When the quantity of an item is counted,
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record the date of stocktake
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"""
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count = int(count)
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if count < 0 or self.infinite:
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return
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self.quantity = count
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self.stocktake_date = datetime.now().date()
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self.save()
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def add_stock(self, amount):
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""" Add items to stock
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This function can be called by initiating a ProjectRun,
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or by manually adding the items to the stock location
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"""
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amount = int(amount)
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if self.infinite or amount == 0:
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return
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amount = int(amount)
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q = self.quantity + amount
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if q < 0:
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q = 0
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self.quantity = q
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self.save()
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def take_stock(self, amount):
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self.add_stock(-amount)
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def __str__(self):
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return "{n} x {part} @ {loc}".format(
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n=self.quantity,
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part=self.part.name,
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loc=self.location.name)
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class StockTracking(models.Model):
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""" Tracks a single movement of stock
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- Used to track stock being taken from a location
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- Used to track stock being added to a location
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- "Pending" flag shows that stock WILL be taken / added
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"""
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item = models.ForeignKey(StockItem, on_delete=models.CASCADE, related_name='tracking')
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quantity = models.IntegerField()
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when = models.DateTimeField(auto_now=True)
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