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| -rw-r--r-- | docs/topics/db/queries.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/docs/topics/db/queries.txt b/docs/topics/db/queries.txt index 654c2c5c4a..0d69099fa7 100644 --- a/docs/topics/db/queries.txt +++ b/docs/topics/db/queries.txt @@ -985,6 +985,15 @@ entry:: entry.save() entry.authors.set(old_authors) +For a ``OneToOneField``, you must duplicate the related object and assign it +to the new object's field to avoid violating the one-to-one unique constraint. +For example, assuming ``entry`` is already duplicated as above:: + + detail = EntryDetail.objects.all()[0] + detail.pk = None + detail.entry = entry + detail.save() + .. _topics-db-queries-update: Updating multiple objects at once |