Allow using the same tag alias for different locales

boards/migrations/0060_auto_20170227_1738.py

@@ -0,0 +1,20 b''
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.5 on 2017-02-27 15:38
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('boards', '0059_auto_20170227_1156'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='tag',
+            name='name',
+            field=models.CharField(db_index=True, max_length=100),
+        ),
+    ]

boards/migrations/0061_auto_20170227_1739.py

@@ -0,0 +1,25 b''
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.5 on 2017-02-27 15:39
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('boards', '0060_auto_20170227_1738'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='tag',
+            name='name',
+            field=models.CharField(db_index=True, max_length=100, unique=True),
+        ),
+        migrations.AlterField(
+            model_name='tagalias',
+            name='name',
+            field=models.CharField(db_index=True, max_length=100),
+        ),
+    ]

boards/models/tag.py

@@ -25,7 +25,7 b' class TagAlias(models.Model, Viewable):'
         app_label = 'boards'
         ordering = ('name',)
 
-    name = models.CharField(max_length=100, db_index=True, unique=True)
+    name = models.CharField(max_length=100, db_index=True)
     locale = models.CharField(max_length=10, db_index=True)
 
     parent = models.ForeignKey('Tag', null=True, blank=True,
@@ -50,10 +50,10 b' class TagManager(models.Manager):'
 
     def get_by_alias(self, alias):
         tag = None
-        try:
-            tag = TagAlias.objects.get(name=alias).parent
-        except TagAlias.DoesNotExist:
-            pass
+        aliases = TagAlias.objects.filter(name=alias).all()
+        if aliases:
+            tag = aliases[0].parent
+
         return tag