Show nearby messages while translating

docs/config.rst

@@ -26,6 +26,10 @@ All settings are stored in :file:`settings.py` (as usual for Django).
 
     API key for Microsoft Translator service, you can register at http://www.bing.com/developers/createapp.aspx
 
+.. envvar:: NEARBY_MESSAGES
+
+    How many messages around current one to show during translating.
+
 .. envvar:: SITE_TITLE
 
     Site title to be used in website and emails as well.

html/translate.html

@@ -156,6 +156,19 @@
         <li><a href="/js/similar/{{ unit.id }}/">{% trans "Similar messages" %}</a></li>
     </ul>
     <div id="tab-nearby">
+    <table>
+    <thead>
+    <tr><th>{% trans "Source" %}</th><th>{% trans "Translation" %}</th></tr>
+    </thead>
+    <tbody>
+    {% for item in unit.nearby %}
+    <tr>
+    <td class="translatetext">{{ item.source|fmttranslation }}</td>
+    <td class="translatetext">{{ item.target|fmttranslation:unit.translation.language }}</td>
+    </tr>
+    {% endfor %}
+    </tbody>
+    </table>
     </div>
 </div>
 

settings.py

@@ -248,3 +248,6 @@ EMAIL_SUBJECT_PREFIX = '[%s] ' % SITE_TITLE
 
 # Enable remote hooks
 ENABLE_HOOKS = True
+
+# Number of nearby messages to show in each direction
+NEARBY_MESSAGES = 5

trans/models.py

@@ -612,6 +612,18 @@ class Unit(models.Model):
                 check = check
             )
 
+    def nearby(self):
+        '''
+        Returns list of nearby messages based on location.
+        '''
+        print self.position - settings.NEARBY_MESSAGES
+        print self.position + settings.NEARBY_MESSAGES
+        return Unit.objects.filter(
+            translation = self.translation,
+            position__gte = self.position - settings.NEARBY_MESSAGES,
+            position__lte = self.position + settings.NEARBY_MESSAGES,
+        )
+
 class Suggestion(models.Model):
     checksum = models.CharField(max_length = 40, default = '', blank = True, db_index = True)
     target = models.TextField()