Add inheritance model

rsconcept/backend/apps/oss/migrations/0002_inheritance.py

@@ -0,0 +1,28 @@
+# Generated by Django 5.0.7 on 2024-07-25 18:08
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('oss', '0001_initial'),
+        ('rsform', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Inheritance',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('child', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='as_child', to='rsform.constituenta', verbose_name='Наследованная конституента')),
+                ('parent', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='as_parent', to='rsform.constituenta', verbose_name='Исходная конституента')),
+            ],
+            options={
+                'verbose_name': 'Наследование синтеза',
+                'verbose_name_plural': 'Отношение наследования конституент',
+                'unique_together': {('parent', 'child')},
+            },
+        ),
+    ]

rsconcept/backend/apps/oss/models/Inheritance.py

@@ -4,12 +4,6 @@ from django.db.models import CASCADE, ForeignKey, Model
 
 class Inheritance(Model):
     ''' Inheritance links parent and child constituents in synthesis operation.'''
-    operation: ForeignKey = ForeignKey(
-        verbose_name='Операция',
-        to='oss.Operation',
-        on_delete=CASCADE
-    )
-
     parent: ForeignKey = ForeignKey(
         verbose_name='Исходная конституента',
         to='rsform.Constituenta',
@@ -27,6 +21,8 @@ class Inheritance(Model):
         ''' Model metadata. '''
         verbose_name = 'Наследование синтеза'
         verbose_name_plural = 'Отношение наследования конституент'
+        unique_together = [['parent', 'child']]
+
 
     def __str__(self) -> str:
         return f'{self.parent} -> {self.child}'

rsconcept/backend/apps/oss/models/__init__.py

@@ -1,6 +1,7 @@
 ''' Django: Models. '''
 
 from .Argument import Argument
+from .Inheritance import Inheritance
 from .Operation import Operation, OperationType
 from .OperationSchema import OperationSchema
 from .Substitution import Substitution