Fix mandate.role field length + constituency fingerprint

representatives/migrations/0017_auto_20160623_2201.py

+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+def migrate_constituencies(apps, schema_editor):
+    """
+    Re-save constituencies to recompute fingerprints
+    """
+    Constituency = apps.get_model("representatives", "Constituency")
+    for c in Constituency.objects.all():
+        c.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('representatives', '0016_chamber_migrate_data'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='mandate',
+            name='role',
+            field=models.CharField(default=b'', help_text=b'Eg.: president of a political group', max_length=255, blank=True),
+        ),
+
+        migrations.RunPython(migrate_constituencies)
+    ]

representatives/models.py

@@ -201,7 +201,7 @@ class Constituency(HashableModel, TimeStampedModel):
     country = models.ForeignKey('Country', null=True, blank=True,
         related_name='constituencies')
 
-    hashable_fields = ['name']
+    hashable_fields = ['name', 'country']
 
     @cached_property
     def active(self):
@@ -230,7 +230,7 @@ class Mandate(HashableModel, TimeStampedModel):
         Constituency, null=True, related_name='mandates')
     representative = models.ForeignKey(Representative, related_name='mandates')
     role = models.CharField(
-        max_length=25,
+        max_length=255,
         blank=True,
         default='',
         help_text="Eg.: president of a political group"