Update connector and author tables

fedireads/connectors/openlibrary.py

@@ -162,7 +162,7 @@ def get_date(date_string):
             return datetime.strptime(date_string, date_format)
         except ValueError:
             pass
-    return False
+    return None
 
 
 def get_description(description_blob):

fedireads/migrations/0022_auto_20200328_2001.py

@@ -0,0 +1,27 @@
+# Generated by Django 3.0.3 on 2020-03-28 20:01
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('fedireads', '0021_auto_20200328_0428'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='connector',
+            name='is_self',
+        ),
+        migrations.AddField(
+            model_name='author',
+            name='fedireads_key',
+            field=models.CharField(max_length=255, null=True, unique=True),
+        ),
+        migrations.AlterField(
+            model_name='connector',
+            name='connector_file',
+            field=models.CharField(choices=[('openlibrary', 'Openlibrary'), ('self_connector', 'Self Connector'), ('fedireads_connector', 'Fedireads Connector')], default='openlibrary', max_length=255),
+        ),
+    ]

fedireads/models/book.py

@@ -20,9 +20,6 @@ class Connector(FedireadsModel):
         default='openlibrary',
         choices=ConnectorFiles.choices
     )
-    # is this a connector to your own database, should only be true if
-    # the connector_file is `fedireads`
-    is_self = models.BooleanField(default=False)
     api_key = models.CharField(max_length=255, null=True)
 
     base_url = models.CharField(max_length=255)
@@ -130,6 +127,7 @@ class Edition(Book):
 class Author(FedireadsModel):
     ''' copy of an author from OL '''
     openlibrary_key = models.CharField(max_length=255, null=True, unique=True)
+    fedireads_key = models.CharField(max_length=255, null=True, unique=True)
     wikipedia_link = models.CharField(max_length=255, blank=True, null=True)
     # idk probably other keys would be useful here?
     born = models.DateTimeField(null=True)