Fix unique constraint

backend/api/models.py

@@ -287,7 +287,7 @@ class Span(Annotation):
         if allow_overlapping:
             super().validate_unique(exclude=exclude)
         else:
-            if Span.objects.filter(example=self.example).filter(
+            if Span.objects.exclude(id=self.id).filter(example=self.example).filter(
                 models.Q(start_offset__gte=self.start_offset, start_offset__lt=self.end_offset) |
                 models.Q(end_offset__gt=self.start_offset, end_offset__lte=self.end_offset) |
                 models.Q(start_offset__lte=self.start_offset, end_offset__gte=self.end_offset)

backend/api/tests/api/test_annotation.py

@@ -1,7 +1,7 @@
 from rest_framework import status
 from rest_framework.reverse import reverse
 
-from ...models import DOCUMENT_CLASSIFICATION, Category
+from ...models import DOCUMENT_CLASSIFICATION, SEQUENCE_LABELING, Category
 from .utils import (CRUDMixin, make_annotation, make_doc, make_label,
                     make_user, prepare_project)
 
@@ -79,11 +79,17 @@ class TestAnnotationCreation(CRUDMixin):
 class TestAnnotationDetail(CRUDMixin):
 
     def setUp(self):
-        self.project = prepare_project(task=DOCUMENT_CLASSIFICATION)
+        self.project = prepare_project(task=SEQUENCE_LABELING)
         self.non_member = make_user()
         doc = make_doc(self.project.item)
         label = make_label(self.project.item)
-        annotation = make_annotation(task=DOCUMENT_CLASSIFICATION, doc=doc, user=self.project.users[0])
+        annotation = make_annotation(
+            task=SEQUENCE_LABELING,
+            doc=doc,
+            user=self.project.users[0],
+            start_offset=0,
+            end_offset=1
+        )
         self.data = {'label': label.id}
         self.url = reverse(viewname='annotation_detail', args=[self.project.item.id, doc.id, annotation.id])
 

backend/api/tests/api/utils.py

@@ -109,14 +109,14 @@ def make_auto_labeling_config(project):
     return mommy.make('AutoLabelingConfig', project=project)
 
 
-def make_annotation(task, doc, user):
+def make_annotation(task, doc, user, **kwargs):
     annotation_model = {
         DOCUMENT_CLASSIFICATION: 'Category',
         SEQUENCE_LABELING: 'Span',
         SEQ2SEQ: 'TextLabel',
         SPEECH2TEXT: 'TextLabel'
     }.get(task)
-    return mommy.make(annotation_model, example=doc, user=user)
+    return mommy.make(annotation_model, example=doc, user=user, **kwargs)
 
 
 def prepare_project(task: str = 'Any', collaborative_annotation=False):

backend/api/tests/test_models.py

@@ -150,6 +150,13 @@ class TestSequenceAnnotation(TestCase):
         mommy.make('Span', example=example, start_offset=0, end_offset=5)
         mommy.make('Span', example=example, start_offset=10, end_offset=15)
 
+    def test_update(self):
+        project = mommy.make('SequenceLabelingProject', allow_overlapping=False)
+        example = mommy.make('Example', project=project)
+        span = mommy.make('Span', example=example, start_offset=0, end_offset=5)
+        span.end_offset = 6
+        span.save()
+
 
 class TestSeq2seqAnnotation(TestCase):