change permissions name unique

apps/product/migrations/0003_saleunit.py

@@ -0,0 +1,36 @@
+# Generated by Django 5.0 on 2025-06-08 04:52
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('product', '0002_attribute_attributevalue'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='SaleUnit',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('create_date', models.DateTimeField(auto_now_add=True)),
+                ('modify_date', models.DateTimeField(auto_now=True)),
+                ('creator_info', models.CharField(max_length=100, null=True)),
+                ('modifier_info', models.CharField(max_length=100, null=True)),
+                ('trash', models.BooleanField(default=False)),
+                ('unit', models.CharField(max_length=255, null=True)),
+                ('variation_coefficient', models.CharField(max_length=255, null=True)),
+                ('required', models.BooleanField(default=False)),
+                ('created_by', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='%(class)s_createddby', to=settings.AUTH_USER_MODEL)),
+                ('modified_by', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='%(class)s_modifiedby', to=settings.AUTH_USER_MODEL)),
+                ('product', models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='sale_unit', to='product.referenceproduct')),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+    ]

apps/product/models.py

@@ -92,3 +92,18 @@ class AttributeValue(BaseModel):
 
     def save(self, *args, **kwargs):
         return super(AttributeValue, self).save(*args, **kwargs)
+
+
+class SaleUnit(BaseModel):
+    product = models.ForeignKey(
+        ReferenceProduct,
+        on_delete=models.CASCADE,
+        related_name='sale_unit',
+        null=True
+    )
+    unit = models.CharField(max_length=255, null=True)
+    variation_coefficient = models.CharField(max_length=255, null=True)
+    required = models.BooleanField(default=False)
+
+    def __str__(self):
+        return f'{self.product} - {self.unit} - {self.variation_coefficient}'