On approving an IndieAuth request, actually generate an auth code and redirect

lemonauth/models.py

@@ -0,0 +1,29 @@
+from django.db import models
+from secrets import token_hex
+
+
+class IndieAuthCodeManager(models.Manager):
+    def create_from_dict(self, d):
+        code = self.create(
+            me=d['me'],
+            client_id=d['client_id'],
+            redirect_uri=d['redirect_uri'],
+            response_type=d.get('response_type', 'id'),
+            scope=d.get('scope', ''),
+        )
+        code.code = token_hex(32)
+        return code
+
+
+class IndieAuthCode(models.Model):
+    objects = IndieAuthCodeManager()
+    code = models.CharField(max_length=64, unique=True)
+    me = models.CharField(max_length=255)
+    client_id = models.CharField(max_length=255)
+    redirect_uri = models.CharField(max_length=255)
+    response_type = models.CharField(
+        max_length=4,
+        choices=(('id', 'id'), ('code', 'code')),
+        default='id',
+    )
+    scope = models.CharField(max_length=200, blank=True)