Add new Relation model

backend/labels/migrations/0007_relationnew.py

@@ -0,0 +1,37 @@
+# Generated by Django 4.0.2 on 2022-02-22 06:15
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('label_types', '0006_auto_20220222_0512'),
+        ('examples', '0002_alter_example_project'),
+        ('labels', '0006_rename_relation_relationold'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='RelationNew',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('prob', models.FloatField(default=0.0)),
+                ('manual', models.BooleanField(default=False)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('direction', models.CharField(choices=[('left', 'left'), ('right', 'right'), ('undirected', 'undirected')], default='undirected', max_length=10)),
+                ('example', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='relations', to='examples.example')),
+                ('from_id', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='from_relations', to='labels.span')),
+                ('to_id', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='to_relations', to='labels.span')),
+                ('type', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='label_types.relationtype')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+    ]

backend/labels/models.py

@@ -4,7 +4,7 @@ from django.db import models
 
 from .managers import CategoryManager, LabelManager, SpanManager, TextLabelManager
 from examples.models import Example
-from label_types.models import CategoryType, RelationTypeOld, SpanType
+from label_types.models import CategoryType, RelationType, RelationTypeOld, SpanType
 from projects.models import Project
 
 
@@ -104,3 +104,18 @@ class RelationOld(models.Model):
 
     class Meta:
         unique_together = ("annotation_id_1", "annotation_id_2", "type", "project")
+
+
+class RelationNew(Label):
+    from_id = models.ForeignKey(Span, on_delete=models.CASCADE, related_name="from_relations")
+    to_id = models.ForeignKey(Span, on_delete=models.CASCADE, related_name="to_relations")
+    type = models.ForeignKey(RelationType, on_delete=models.CASCADE)
+    example = models.ForeignKey(to=Example, on_delete=models.CASCADE, related_name="relations")
+    direction = models.CharField(
+        max_length=10,
+        choices=(("left", "left"), ("right", "right"), ("undirected", "undirected")),
+        default="undirected",
+    )
+
+    def __str__(self):
+        return self.__dict__.__str__()