Author: post merge duplicate authors on save - prevent duplicate in form validation

1 files changed, 18 insertions, 1 deletions

diff --git a/ishtar_common/models.py b/ishtar_common/models.py
index b750ee613..b3956e2f1 100644
--- a/ishtar_common/models.py
+++ b/ishtar_common/models.py
@@ -4853,8 +4853,25 @@ class Author(FullSearch):
             "person": str(self.person)
         }
 
+    def merge(self, item, keep_old=False):
+        merge_model_objects(self, item, keep_old=keep_old)
+
+
+def author_post_save(sender, **kwargs):
+    if not kwargs.get('instance'):
+        return
+    cached_label_changed(sender, **kwargs)
+    instance = kwargs.get('instance')
+    q = Author.objects.filter(person=instance.person,
+                              author_type=instance.author_type)
+    if q.count() <= 1:
+        return
+    authors = list(q.all())
+    for author in authors[1:]:
+        authors[0].merge(author)
+
 
-post_save.connect(cached_label_changed, sender=Author)
+post_save.connect(author_post_save, sender=Author)
 
 
 class SourceType(HierarchicalType):