OCR: Add 'ocr_content' attribute

Add the 'ocr_content' attribute to documents to allow access
to a document's OCR content for indexing and other purposes.

Fixes the OCR indexing failing test.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

HISTORY.rst

@@ -81,6 +81,8 @@
 - Exposed a new Celery setting via the UI: CELERY_ALWAYS_EAGER.
 - Settings with lazy values are now more carefully checked
   and converteed before serializing them.
+- Add the 'ocr_content' attribute to documents to allow access
+  to a document's OCR content for indexing and other purposes.
 
 3.1.9 (2018-11-01)
 ==================

mayan/apps/ocr/apps.py

@@ -7,6 +7,7 @@ from kombu import Exchange, Queue
 
 from django.apps import apps
 from django.db.models.signals import post_save
+from django.utils.encoding import force_text
 from django.utils.timezone import now
 from django.utils.translation import ugettext_lazy as _
 
@@ -15,7 +16,7 @@ from common import (
     MayanAppConfig, menu_facet, menu_multi_item, menu_object, menu_secondary,
     menu_tools
 )
-from common.classes import ModelField
+from common.classes import ModelAttribute, ModelField
 from common.settings import settings_db_sync_task_delay
 from documents.search import document_search, document_page_search
 from documents.signals import post_version_upload
@@ -41,7 +42,7 @@ from .permissions import (
 )
 from .queues import *  # NOQA
 from .signals import post_document_version_ocr
-from .utils import get_document_ocr_content
+from .utils import document_property_ocr_content, get_document_ocr_content
 
 logger = logging.getLogger(__name__)
 
@@ -94,13 +95,19 @@ class OCRApp(MayanAppConfig):
         DocumentVersionOCRError = self.get_model('DocumentVersionOCRError')
 
         Document.add_to_class('submit_for_ocr', document_ocr_submit)
-        DocumentVersion.add_to_class(
-            'ocr_content', get_document_ocr_content
+        Document.add_to_class(
+            'ocr_content', document_property_ocr_content
         )
         DocumentVersion.add_to_class(
             'submit_for_ocr', document_version_ocr_submit
         )
 
+        ModelAttribute(
+            model=Document, name='ocr_content', description=_(
+                'The OCR content of the document.'
+            )
+        )
+
         ModelField(
             Document, name='versions__pages__ocr_content__content'
         )

mayan/apps/ocr/tests/literals.py

@@ -1,4 +1,4 @@
 from __future__ import unicode_literals
 
-TEST_OCR_INDEX_NODE_TEMPLATE = '{% if "mayan" in document.latest_version.ocr_content|join:" "|lower %}mayan{% endif %}'
+TEST_OCR_INDEX_NODE_TEMPLATE = '{% if "mayan" in document.ocr_content.lower() %}mayan{% endif %}'
 TEST_OCR_INDEX_NODE_TEMPLATE_LEVEL = 'mayan'

mayan/apps/ocr/tests/test_api.py

@@ -33,7 +33,6 @@ class OCRAPITestCase(DocumentTestMixin, BaseAPITestCase):
     def test_submit_document_no_access(self):
         response = self._request_document_ocr_submit_view()
         self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
-
         self.assertFalse(hasattr(self.document.pages.first(), 'ocr_content'))
 
     def test_submit_document_with_access(self):
@@ -42,7 +41,6 @@ class OCRAPITestCase(DocumentTestMixin, BaseAPITestCase):
         )
         response = self._request_document_ocr_submit_view()
         self.assertEqual(response.status_code, status.HTTP_202_ACCEPTED)
-
         self.assertTrue(hasattr(self.document.pages.first(), 'ocr_content'))
 
     def _request_document_version_ocr_submit_view(self):
@@ -54,7 +52,6 @@ class OCRAPITestCase(DocumentTestMixin, BaseAPITestCase):
     def test_submit_document_version_no_access(self):
         response = self._request_document_version_ocr_submit_view()
         self.assertEqual(response.status_code, status.HTTP_403_FORBIDDEN)
-
         self.assertFalse(hasattr(self.document.pages.first(), 'ocr_content'))
 
     def test_submit_document_version_with_access(self):
@@ -63,7 +60,6 @@ class OCRAPITestCase(DocumentTestMixin, BaseAPITestCase):
         )
         response = self._request_document_version_ocr_submit_view()
         self.assertEqual(response.status_code, status.HTTP_202_ACCEPTED)
-
         self.assertTrue(hasattr(self.document.pages.first(), 'ocr_content'))
 
     def _request_document_page_content_view(self):

mayan/apps/ocr/utils.py

@@ -13,6 +13,11 @@ def get_document_ocr_content(document):
         try:
             page_content = page.ocr_content.content
         except DocumentPageOCRContent.DoesNotExist:
-            pass
+            yield ''
         else:
             yield force_text(page_content)
+
+
+@property
+def document_property_ocr_content(self):
+    return ' '.join(get_document_ocr_content(self))