Make journal.issn blank=true

journals/migrations/0048_auto_20171101_1028.py

+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.4 on 2017-11-01 09:28
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('journals', '0047_auto_20171101_0944'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='journal',
+            name='issn',
+            field=models.CharField(blank=True, default='2542-4653', max_length=16),
+        ),
+    ]

journals/models.py

@@ -33,7 +33,7 @@ class Journal(models.Model):
     name = models.CharField(max_length=100, choices=SCIPOST_JOURNALS, unique=True)
     doi_label = models.CharField(max_length=200, unique=True, db_index=True,
                                  validators=[doi_journal_validator])
-    issn = models.CharField(max_length=16, default='2542-4653')
+    issn = models.CharField(max_length=16, default='2542-4653', blank=True)
     active = models.BooleanField(default=True)
 
     objects = JournalManager()

journals/templates/journals/_base.html

@@ -50,7 +50,7 @@
         <div class="row my-1">
             <div class="col-12">
                 {% if journal.active %}
-                    <p>{{journal}} is published by the SciPost Foundation under the journal doi: 10.21468/{{journal.name}} and ISSN {{journal.issn}}.</p>
+                    <p>{{journal}} is published by the SciPost Foundation under the journal doi: 10.21468/{{journal.name}}{% if journal.issn %} and ISSN {{journal.issn}}{% endif %}.</p>
                 {% endif %}
 		{% if journal.doi_label == 'SciPostPhys' %}
 		    <p>SciPost Physics has been awarded the DOAJ Seal <img src="{% static 'scipost/images/DOAJ_Seal_logo_big.png' %}" alt="DOAJ Seal" width="40"> from the <a href="https://doaj.org">Directory of Open Access Journals</a></p>