Opened 10 years ago

Last modified 10 years ago

#24079 closed Bug

Duplicate results of `ManyToManyField` when using 'though' — at Initial Version

Reported by: Jean-Christophe Owned by: nobody
Component: Database layer (models, ORM) Version: 1.7
Severity: Normal Keywords:
Cc: Triage Stage: Unreviewed
Has patch: no Needs documentation: no
Needs tests: no Patch needs improvement: no
Easy pickings: no UI/UX: no

Description

When using a many 2 many relation ship with 'though' parameter, the DB is returning duplicates when several relations exists for the same pair of objects.

I have the following relations :

              tag 1
      user 1 ----->  article 1
              tag 2
      user 1 ----->  article 1

Expected behavior :

user = User.objects.get(pk=1)
print user.article.all()
[<Article: 1>]

Observed behavior

user = User.objects.get(pk=1)
print user.article.all()
[<Article: 1>, <Article: 1>]

More details on Stack Overflow : http://stackoverflow.com/questions/27777065/duplicate-results-of-manytomanyfield-when-using-though

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