some first models of pos & add required to attributes

apps/product/migrations/0052_remove_productstats_total_quota_and_more.py

@@ -0,0 +1,47 @@
+# Generated by Django 5.0 on 2025-07-20 08:59
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('product', '0051_quotabrokervalue_value'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='productstats',
+            name='total_quota',
+        ),
+        migrations.AddField(
+            model_name='productstats',
+            name='active_quotas_weight',
+            field=models.PositiveBigIntegerField(default=0),
+        ),
+        migrations.AddField(
+            model_name='productstats',
+            name='closed_quotas_weight',
+            field=models.PositiveBigIntegerField(default=0),
+        ),
+        migrations.AddField(
+            model_name='productstats',
+            name='quotas_number',
+            field=models.PositiveBigIntegerField(default=0),
+        ),
+        migrations.AddField(
+            model_name='productstats',
+            name='total_distributed_weight',
+            field=models.PositiveBigIntegerField(default=0),
+        ),
+        migrations.AddField(
+            model_name='productstats',
+            name='total_quota_weight',
+            field=models.PositiveBigIntegerField(default=0),
+        ),
+        migrations.AddField(
+            model_name='productstats',
+            name='total_warehouse_entry',
+            field=models.PositiveBigIntegerField(default=0),
+        ),
+    ]

apps/product/migrations/0053_attribute_required.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.0 on 2025-07-21 06:06
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('product', '0052_remove_productstats_total_quota_and_more'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='attribute',
+            name='required',
+            field=models.BooleanField(default=False),
+        ),
+    ]

apps/product/models.py

@@ -141,8 +141,13 @@ class ProductStats(BaseModel):
         related_name='stats',
         null=True
     )
-    total_quota = models.PositiveBigIntegerField(default=0)
+    quotas_number = models.PositiveBigIntegerField(default=0)
+    active_quotas_weight = models.PositiveBigIntegerField(default=0)
+    closed_quotas_weight = models.PositiveBigIntegerField(default=0)
+    total_quota_weight = models.PositiveBigIntegerField(default=0)
     total_remaining = models.PositiveBigIntegerField(default=0)
+    total_distributed_weight = models.PositiveBigIntegerField(default=0)
+    total_warehouse_entry = models.PositiveBigIntegerField(default=0)
     total_sold = models.PositiveBigIntegerField(default=0)
     total_transactions = models.PositiveBigIntegerField(default=0)
 
@@ -150,7 +155,7 @@ class ProductStats(BaseModel):
         return f'Product: {self.product.name}-{self.product.id} stats'
 
     def save(self, *args, **kwargs):
-        return super(ProductStats).save(*args, **kwargs)
+        return super(ProductStats, self).save(*args, **kwargs)
 
 
 class Attribute(BaseModel):
@@ -170,7 +175,7 @@ class Attribute(BaseModel):
         related_name="attributes",
         null=True
     )
-
+    required = models.BooleanField(default=False)
     is_global = models.BooleanField(default=False)
 
     def __str__(self):

apps/product/signals.py

@@ -1,8 +1,18 @@
 from django.db.models import Sum
 from django.db.models.signals import post_save, post_delete
 from django.dispatch import receiver
-from .models import QuotaDistribution, Quota, Product
-from apps.warehouse.models import InventoryQuotaSaleTransaction
+from .models import (
+    QuotaDistribution,
+    Quota,
+    Product,
+    ProductStats,
+    QuotaStats
+)
+from apps.warehouse.models import (
+    InventoryQuotaSaleTransaction,
+    InventoryEntry
+)
+from django.db import models
 
 
 def recalculate_remaining_amount(quota):
@@ -22,15 +32,113 @@ def update_quota_remaining(sender, instance, **kwargs):
 
 
 def update_product_stats(instance: Product):
-    pass
+    """ update all stats of product  """
+
+    if hasattr(instance, 'stats'):
+        stat = instance.stats
+    else:
+        stat = ProductStats.objects.create(product=instance)
+
+    # number of quotas
+    quotas_count = instance.quotas.filter(is_closed=False).count()  # noqa
+
+    # total weight of product that assigned in quota
+    active_quotas_weight = instance.quotas.filter(is_closed=False).aggregate(
+        total=models.Sum('quota_weight')
+    )['total'] or 0
+
+    closed_quotas_weight = instance.quotas.filter(is_closed=True).aggregate(  # noqa
+        total=models.Sum('quota_weight')
+    )['total'] or 0
+
+    total_quotas_weight = instance.quotas.all().aggregate(  # noqa
+        total=models.Sum('quota_weight')
+    )['total'] or 0
+
+    # total remaining weight of product quotas
+    total_remaining_quotas_weight = instance.quotas.filter(is_closed=False).aggregate(  # noqa
+        total=models.Sum('remaining_weight')
+    )['total'] or 0
+
+    # product total distributed weight from quota
+    total_distributed_weight = QuotaDistribution.objects.filter(
+        quota__product_id=instance.id,
+        quota__is_closed=False
+    ).aggregate(total_weight=models.Sum('weight'))['total_weight'] or 0
+
+    # total sold of product from quota
+    total_sold = QuotaDistribution.objects.filter(
+        quota__product_id=instance.id,
+        quota__is_closed=False
+    ).aggregate(total_sold=models.Sum('been_sold'))['total_sold'] or 0
+
+    # total entry from product to inventory
+    total_warehouse_entry = QuotaDistribution.objects.filter(
+        quota__product_id=instance.id,
+        quota__is_closed=False
+    ).aggregate(total_entry=models.Sum('warehouse_entry'))['total_entry'] or 0
+
+    stat.quotas_number = quotas_count
+    stat.active_quotas_weight = active_quotas_weight
+    stat.closed_quotas_weight = closed_quotas_weight
+    stat.total_quota_weight = total_quotas_weight
+    stat.total_remaining = total_remaining_quotas_weight
+    stat.total_distributed_weight = total_distributed_weight
+    stat.total_warehouse_entry = total_warehouse_entry
+    stat.total_sold = total_sold
+    stat.save(update_fields=[
+        "quotas_number",
+        "active_quotas_weight",
+        "closed_quotas_weight",
+        "total_quota_weight",
+        "total_remaining",
+        "total_distributed_weight",
+        "total_warehouse_entry",
+        "total_sold",
+    ])
 
 
 def update_quota_stats(instance: Quota):
-    pass
+    """ update all stats of quota """
+
+    if hasattr(instance, 'stats'):
+        stat = instance.stats
+    else:
+        stat = QuotaStats.objects.create(quota=instance)
+
+    total_distributed = instance.quota_distributed
+    total_remaining = instance.remaining_weight
+
+    # total entry to inventory from quota
+    total_inventory = InventoryEntry.objects.filter(
+        distribution__quota=instance
+    ).aggregate(
+        total_inventory=models.Sum('weight')
+    )['total_inventory'] or 0
+
+    # total sale of distributions from quota
+    total_sale = instance.distributions_assigned.filter(
+        quota__is_closed=False
+    ).aggregate(total_sale=models.Sum('been_sold'))['total_sale'] or 0
+
+    stat.total_distributed = total_distributed
+    stat.remaining = total_remaining
+    stat.total_inventory = total_inventory
+    stat.total_sale = total_sale
+    stat.save(update_fields=[
+        "total_distributed",
+        "remaining",
+        "total_inventory",
+        "total_sale",
+    ])
 
 
 @receiver([post_save, post_delete], sender=QuotaDistribution)
 @receiver([post_save, post_delete], sender=InventoryQuotaSaleTransaction)
 def update_stats_on_change(sender, instance, **kwargs):
-    update_product_stats(instance)
-    update_quota_stats(instance)
+    if sender == QuotaDistribution:
+        update_product_stats(instance.quota.product)
+        update_quota_stats(instance.quota)
+    elif sender == InventoryQuotaSaleTransaction:
+        update_product_stats(instance.quota_distribution.quota.product)
+        update_quota_stats(instance.quota_distribution.quota)