Add help text to Submission.proceedings field

submissions/migrations/0059_auto_20190912_0906.py

+# Generated by Django 2.1.8 on 2019-09-12 07:06
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('submissions', '0058_auto_20190522_1120'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='submission',
+            name='proceedings',
+            field=models.ForeignKey(blank=True, help_text="Don't find the Proceedings you are looking for? Ask the conference organizers to contact our admin at admin@scipost.org to set things up.", null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='submissions', to='proceedings.Proceedings'),
+        ),
+    ]

submissions/models.py

@@ -100,7 +100,11 @@ class Submission(models.Model):
 
     submitted_to = models.ForeignKey('journals.Journal', on_delete=models.CASCADE)
     proceedings = models.ForeignKey('proceedings.Proceedings', null=True, blank=True,
-                                    on_delete=models.SET_NULL, related_name='submissions')
+                                    on_delete=models.SET_NULL, related_name='submissions',
+                                    help_text=(
+                                        'Don\'t find the Proceedings you are looking for? '
+                                        'Ask the conference organizers to contact our admin '
+                                        'at admin@scipost.org to set things up.'))
     title = models.CharField(max_length=300)
 
     # Authors which have been mapped to contributors: