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1 change: 1 addition & 0 deletions docs/changelog.rst
Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@ dev
- Use new update_one, update_many on document/queryset update #1491
- Use insert_one, insert_many in Document.insert #1491
- Fix reload(fields) affect changed fields #1371
- Fix Read-only access to database fails when trying to create indexes #1338

Changes in 0.15.0
=================
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5 changes: 4 additions & 1 deletion mongoengine/document.py
Original file line number Diff line number Diff line change
Expand Up @@ -195,7 +195,10 @@ def _get_collection(cls):

# Ensure indexes on the collection unless auto_create_index was
# set to False.
if cls._meta.get('auto_create_index', True):
# Also there is no need to ensure indexes on slave.
db = cls._get_db()
if cls._meta.get('auto_create_index', True) and\
db.client.is_primary:
cls.ensure_indexes()

return cls._collection
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