PRWLR-3997: fix(Models): create BaseModel & TenantModel (#13)

* fix(Models): create BaseModel & TenantModel

* update description to match class

Co-authored-by: Víctor Fernández Poyatos <victor@prowler.com>

* fix(Tenants): rename TenantModel to Tenant

---------

Co-authored-by: Víctor Fernández Poyatos <victor@prowler.com>

src/backend/api/migrations/0002_tenantmodel.py

@@ -0,0 +1,33 @@
+# Generated by Django 5.0.7 on 2024-07-12 16:45
+
+import uuid
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("api", "0001_initial"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="Tenant",
+            fields=[
+                (
+                    "id",
+                    models.UUIDField(
+                        default=uuid.uuid4,
+                        editable=False,
+                        primary_key=True,
+                        serialize=False,
+                    ),
+                ),
+                ("inserted_at", models.DateTimeField(auto_now_add=True)),
+                ("updated_at", models.DateTimeField(auto_now=True)),
+                ("name", models.CharField(max_length=100)),
+            ],
+            options={
+                "abstract": False,
+            },
+        ),
+    ]

src/backend/api/models.py

@@ -1,4 +1,27 @@
 from django.db import models
+import uuid
+
+
+class Base(models.Model):
+    """
+    Abstract base model class that provides common fields for all models.
+    """
+
+    id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
+
+    inserted_at = models.DateTimeField(auto_now_add=True, editable=False)
+    updated_at = models.DateTimeField(auto_now=True, editable=False)
+
+    class Meta:
+        abstract = True
+
+
+class Tenant(Base):
+    """
+    The Tenant is the basic grouping in the system. It is used to separate data between customers.
+    """
+
+    name = models.CharField(max_length=100)
 
 
 class TestModel(models.Model):

src/backend/api/serializers.py

@@ -1,6 +1,6 @@
 from rest_framework import serializers
 
-from api.models import TestModel
+from api.models import TestModel, Tenant
 
 
 class TestModelSerializer(serializers.ModelSerializer):
@@ -12,3 +12,13 @@ class TestModelSerializer(serializers.ModelSerializer):
     class Meta:
         model = TestModel
         fields = "__all__"
+
+
+class TenantSerializer(serializers.ModelSerializer):
+    """
+    Serializer for the Tenant model.
+    """
+
+    class Meta:
+        model = Tenant
+        fields = "__all__"