Add data property to Example

backend/api/models.py

@@ -257,6 +257,13 @@ class Example(models.Model):
     def comment_count(self):
         return Comment.objects.filter(example=self.id).count()
 
+    @property
+    def data(self):
+        if self.project.is_text_project:
+            return self.text
+        else:
+            return str(self.filename)
+
     def is_labeled(self, is_collaborative, user):
         if is_collaborative:
             for model in Annotation.__subclasses__():

backend/api/tests/test_models.py

@@ -3,8 +3,8 @@ from django.db.utils import IntegrityError
 from django.test import TestCase
 from model_mommy import mommy
 
-from api.models import (SEQUENCE_LABELING, Category, CategoryType,
-                        ExampleState, Span, SpanType, TextLabel,
+from api.models import (IMAGE_CLASSIFICATION, SEQUENCE_LABELING, Category,
+                        CategoryType, ExampleState, Span, SpanType, TextLabel,
                         generate_random_hex_color)
 
 from .api.utils import prepare_project
@@ -240,3 +240,16 @@ class TestLabelDistribution(TestCase):
         expected[self.user.username][label_a.text] = 1
         expected[self.user.username][label_b.text] = 1
         self.assertEqual(distribution, expected)
+
+
+class TestExample(TestCase):
+
+    def test_text_project_returns_text_as_data_property(self):
+        project = prepare_project(SEQUENCE_LABELING)
+        example = mommy.make('Example', project=project.item)
+        self.assertEqual(example.text, example.data)
+
+    def test_image_project_returns_filename_as_data_property(self):
+        project = prepare_project(IMAGE_CLASSIFICATION)
+        example = mommy.make('Example', project=project.item)
+        self.assertEqual(str(example.filename), example.data)

backend/auto_labeling/views.py

@@ -215,21 +215,14 @@ class AutomatedDataLabeling(generics.CreateAPIView):
     def perform_create(self, serializer):
         serializer.save(user=self.request.user)
 
-    def get_example(self, project):
-        example = get_object_or_404(Example, pk=self.kwargs['example_id'])
-        if project.is_text_project:
-            return example.text
-        else:
-            return str(example.filename)
-
     def extract(self):
         project = get_object_or_404(Project, pk=self.kwargs['project_id'])
-        example = self.get_example(project)
+        example = get_object_or_404(Example, pk=self.kwargs['example_id'])
         config = project.auto_labeling_config.first()
         if not config:
             raise AutoLabelingPermissionDenied()
         return execute_pipeline(
-            text=example,
+            text=example.data,
             project_type=project.project_type,
             model_name=config.model_name,
             model_attrs=config.model_attrs,