Fix NLP translation editing

kobo/apps/subsequences/actions/translation.py

@@ -37,11 +37,17 @@ def load_params(self, params):
 
     def has_change(self, orecord, erecord):
         for language in self.languages:
-            olang = orecord.get(language, False)
-            elang = erecord.get(language, False)
-            if olang is False or elang is False:
+            olang = orecord.get(language, {})
+            elang = erecord.get(language, {})
+            if not elang:
+                # This language is neither being edited nor deleted (deletion
+                # would send an "edit" with value ⌫ , aka `BaseAction.DELETE`)
+                continue
+            if not olang:
+                # A new language is always a change
                 return True
-            if self.record_repr(olang) != self.record_repr(elang):
+            if olang.get('value') != elang.get('value'):
+                # An existing language has translation text that has changed
                 return True
         return False
 
@@ -180,8 +186,21 @@ def engines(self):
         yield (manual_name, manual_engine)
 
     def record_repr(self, record):
+        # TODO: Make sure this method is sensible. Some places, e.g.
+        # `BaseAction.is_auto_request()`, expect this method to return a
+        # single string; however, multiple translations cannot be represented
+        # adequately this way.
+        # Cope with this by returning a single string if there is only one
+        # translation, matching the previous behavior. If there is more than
+        # one translation, return a dictionary of
+        # `{'lang1': 'translation1','lang2': 'translation2', …}`.
+
         if len(record.keys()) == 1:
             return [*record.values()][0].get('value')
+        return {
+            lang: lang_record.get('value')
+            for lang, lang_record in record.items()
+        }
 
     def auto_request_repr(self, erecord):
         lang_code = [*erecord.values()][0]['languageCode']

kobo/apps/subsequences/tests/test_submission_extras_api_post.py

@@ -84,7 +84,7 @@ def test_translation_revisions_stored_properly(self):
         summ = tx_instance.compile_revised_record({}, edits=first_post)
         assert summ['q1']['translation']['tx1']['value'] == 'VAL1'
         assert len(summ['q1']['translation']['tx1']['revisions']) == 0
-        summ1 = deepcopy(summ)
+
         second_post = {
             'q1': {
                 'translation': {
@@ -94,6 +94,14 @@ def test_translation_revisions_stored_properly(self):
                 }
             }
         }
+        summ1 = tx_instance.compile_revised_record(
+            deepcopy(summ), edits=second_post
+        )
+        assert summ1['q1']['translation']['tx1']['value'] == 'VAL2'
+        assert len(summ1['q1']['translation']['tx1']['revisions']) == 1
+        assert (
+            summ1['q1']['translation']['tx1']['revisions'][0]['value'] == 'VAL1'
+        )
 
     def test_transx_requires_change_asset_permission(self):
         """