fixing issue with SingleInspiral channels being truncated

gracedb/events/migrations/0013_increase_singleinspiral_channel_length.py

+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.5 on 2018-02-21 20:17
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('events', '0012_add_DESGW_to_EMGroups'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='singleinspiral',
+            name='channel',
+            field=models.CharField(blank=True, max_length=50),
+        ),
+    ]

gracedb/events/models.py

@@ -868,7 +868,7 @@ class SingleInspiral(models.Model):
     event             = models.ForeignKey(Event, null=False)
     ifo               = models.CharField(max_length=20, null=True)
     search            = models.CharField(max_length=20, null=True)
-    channel           = models.CharField(max_length=20, blank=True)
+    channel           = models.CharField(max_length=50, blank=True)
     end_time          = models.IntegerField(null=True)
     end_time_ns       = models.IntegerField(null=True)
     end_time_gmst     = models.FloatField(null=True)