Merge pull request #43 from emtwo/17

Closes #17: Remove unique constraint on variant identifiers.

app/experimenter/experiments/migrations/0004_auto_20170503_1833.py

@@ -0,0 +1,29 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11 on 2017-05-03 18:33
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('experiments', '0003_experiment_analysis'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='experimentvariant',
+            name='name',
+            field=models.CharField(max_length=255),
+        ),
+        migrations.AlterField(
+            model_name='experimentvariant',
+            name='slug',
+            field=models.SlugField(max_length=255),
+        ),
+        migrations.AlterUniqueTogether(
+            name='experimentvariant',
+            unique_together=set([('slug', 'experiment')]),
+        ),
+    ]

app/experimenter/experiments/models.py

@@ -26,9 +26,9 @@ class Experiment(models.Model):
 class ExperimentVariant(models.Model):
     experiment = models.ForeignKey(Experiment, blank=False, null=False)
     name = models.CharField(
-        max_length=255, unique=True, blank=False, null=False)
+        max_length=255, blank=False, null=False)
     slug = models.SlugField(
-        max_length=255, unique=True, blank=False, null=False)
+        max_length=255, blank=False, null=False)
     is_control = models.BooleanField(default=False)
     description = models.TextField(default='')
     threshold = models.PositiveIntegerField(default=0)
@@ -40,3 +40,4 @@ class ExperimentVariant(models.Model):
     class Meta:
         verbose_name = 'Experiment Variant'
         verbose_name_plural = 'Experiment Variants'
+        unique_together = ('slug', 'experiment')