Add Transaction related model

inventory/migrations/0002_alter_inventory_options.py

@@ -0,0 +1,17 @@
+# Generated by Django 4.2.7 on 2023-11-18 12:03
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('inventory', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='inventory',
+            options={'verbose_name_plural': 'Inventories'},
+        ),
+    ]

inventory/models.py

@@ -28,6 +28,9 @@ class Inventory(models.Model):
     min_stock = models.IntegerField()
     current_stock = models.IntegerField()
 
+    class Meta:
+        verbose_name_plural = 'Inventories'
+
 
 class Item(models.Model):
     """

transaction/migrations/0001_initial.py

@@ -0,0 +1,64 @@
+# Generated by Django 4.2.7 on 2023-11-18 12:03
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('inventory', '0002_alter_inventory_options'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Customer',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=255)),
+                ('address', models.TextField()),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Supplier',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=255)),
+                ('address', models.TextField()),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Transfer',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('quantity', models.IntegerField()),
+                ('from_date_timestamp', models.DateTimeField()),
+                ('to_date_timestamp', models.DateTimeField()),
+                ('from_warehouse', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='transfer_from', to='inventory.warehouse')),
+                ('item', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='inventory.item')),
+                ('to_warehouse', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='transfer_to', to='inventory.warehouse')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Supply',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('quantity', models.IntegerField()),
+                ('arrive_date', models.DateField()),
+                ('item', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='inventory.item')),
+                ('supplier', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='transaction.supplier')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Order',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('order_date', models.DateField()),
+                ('quantity', models.IntegerField()),
+                ('customer', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='transaction.customer')),
+                ('item', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='inventory.item')),
+            ],
+        ),
+    ]

transaction/models.py

@@ -1,3 +1,76 @@
 from django.db import models
 
-# Create your models here.
+from inventory.models import Warehouse, Item
+
+class Supplier(models.Model):
+    """
+    The one who supply the item to the warehouse
+
+    :param name: Name of the supplier
+    :param address: Address of the supplier
+    """
+    name = models.CharField(max_length=255)
+    address = models.TextField()
+
+
+class Supply(models.Model):
+    """
+    Supply is a transaction that the supplier supply the item to the warehouse
+
+    :param supplier: Supplier that supply the item
+    :param item: Item that is supplied
+    :param quantity: Quantity of the item
+    :param arrive_date: Date that the item arrive the warehouse
+    """
+    supplier = models.ForeignKey(Supplier, on_delete=models.CASCADE)
+    item = models.ForeignKey(Item, on_delete=models.CASCADE)
+    quantity = models.IntegerField()
+    arrive_date = models.DateField()
+
+    class Meta:
+        verbose_name_plural = 'Supplies'
+
+
+class Customer(models.Model):
+    """
+    Customer is the one who buy the item from the warehouse
+
+    :param name: Name of the customer
+    :param address: Address of the customer
+    """
+    name = models.CharField(max_length=255)
+    address = models.TextField()
+
+
+class Order(models.Model):
+    """
+    Order is a transaction that the customer buy the item from the warehouse
+
+    :param customer: Customer that buy the item
+    :param item: Item that is bought
+    :param order_date: Date that the item is bought
+    :param quantity: Quantity of the item
+    """
+    customer = models.ForeignKey(Customer, on_delete=models.CASCADE)
+    item = models.ForeignKey(Item, on_delete=models.CASCADE)
+    order_date = models.DateField()
+    quantity = models.IntegerField()
+
+
+class Transfer(models.Model):
+    """
+    Transfer is a transaction that the item is transfered from one warehouse to another
+
+    :param from_warehouse: Warehouse that the item is transfered from
+    :param to_warehouse: Warehouse that the item is transfered to
+    :param item: Item that is transfered
+    :param quantity: Quantity of the item
+    :param from_date_timestamp: Date that the item is transfered from the warehouse
+    :param to_date_timestamp: Date that the item arrive new warehouse
+    """
+    from_warehouse = models.ForeignKey(Warehouse, related_name='transfer_from', on_delete=models.CASCADE)
+    to_warehouse = models.ForeignKey(Warehouse, related_name='transfer_to', on_delete=models.CASCADE)
+    item = models.ForeignKey(Item, on_delete=models.CASCADE)
+    quantity = models.IntegerField()
+    from_date_timestamp = models.DateTimeField()
+    to_date_timestamp = models.DateTimeField()