104 lines
3.4 KiB
Python
104 lines
3.4 KiB
Python
from apps.product import models as product_models
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from apps.authentication.models import User
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from apps.core.models import BaseModel
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from django.db import models
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class InventoryEntry(BaseModel):
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distribution = models.ForeignKey(
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product_models.QuotaDistribution,
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on_delete=models.CASCADE,
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related_name='inventory_entry',
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null=True
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)
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organization = models.ForeignKey(
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product_models.Organization,
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on_delete=models.CASCADE,
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related_name="inventory",
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null=True
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)
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weight = models.PositiveBigIntegerField(default=0)
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balance = models
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lading_number = models.CharField(max_length=50, null=True)
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delivery_address = models.TextField(blank=True, null=True)
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document = models.CharField(max_length=250, null=True)
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is_confirmed = models.BooleanField(default=False)
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notes = models.TextField(blank=True, null=True)
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@property
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def total_sold(self):
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return self.inventory_sales.aggregate(total=models.Sum('weight'))['total'] or 0
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@property
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def remaining_weight(self):
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return self.weight - self.total_sold
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def __str__(self):
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return f"distribution: {self.distribution.distribution_id}-{self.organization.name}"
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def save(self, *args, **kwargs):
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super(InventoryEntry, self).save(*args, **kwargs)
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class InventoryQuotaSaleTransaction(BaseModel):
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transaction_id = models.CharField(max_length=50, null=True)
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seller_organization = models.ForeignKey(
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product_models.Organization,
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on_delete=models.CASCADE,
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related_name='inventory_sales',
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null=True
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)
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quota_distribution = models.ForeignKey(
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product_models.QuotaDistribution,
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on_delete=models.CASCADE,
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related_name='inventory_sales',
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null=True
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)
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inventory_entry = models.ForeignKey(
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InventoryEntry,
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on_delete=models.CASCADE,
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related_name='inventory_sales',
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null=True
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)
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buyer_user = models.ForeignKey(
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User,
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on_delete=models.CASCADE,
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related_name='buyer_sale_transactions',
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null=True
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)
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seller_user = models.ForeignKey(
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User,
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on_delete=models.CASCADE,
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related_name='seller_sale_transactions',
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null=True
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)
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weight = models.DecimalField(max_digits=12, decimal_places=2, null=True)
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delivery_address = models.TextField(blank=True, null=True)
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product = models.ForeignKey(
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product_models.Product,
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on_delete=models.CASCADE,
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related_name='sale_transactions',
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null=True
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)
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transaction_price = models.PositiveBigIntegerField(default=0)
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description = models.TextField(blank=True, null=True)
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herd_owners_number = models.PositiveBigIntegerField(default=0)
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transactions_number = models.PositiveBigIntegerField(default=0)
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sale_status = models.BooleanField(default=False)
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is_active = models.BooleanField(default=0)
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def buyers_count(self):
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""" number of buyers from specific inventory """
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unique_buyers_count = self.objects.filter(
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inventory_entry=self.inventory_entry
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).values('buyer_user').distinct().count()
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return unique_buyers_count
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def __str__(self):
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return f"Inventory Sale: {self.transaction_id}-{self.quota_distribution.distribution_id}"
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def save(self, *args, **kwargs):
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super(InventoryQuotaSaleTransaction, self).save(*args, **kwargs)
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