CODEWITHSUNDEEP
pythonmongodbpymongounique-index
Mirza Delic
Mirza Delic

Reputation: 4339

Python mongodb create_index error

I am getting this error:

Error: cache_for must be an integer or float.

That is becouse of this line:

self.db.table_name.create_index("url", {"unique": True})

But i don't know why, what is wrong here?

Upvotes: 2

Views: 1429

Answers (1)

Sede
Sede

Reputation: 61225

You are doing it wrong the right syntax is:

self.db.table_name.create_index("url", unique=True)

By default this create a single key ascending index and is equivalent to

self.db.table_name.create_index([("url", pymongo.ASCENDING)], unique=True)

To create a descending index you need to explicitly specify it:

self.db.table_name.create_index([("url", pymongo.DESCENDING)], unique=True)

More info in the documentation

You can also create more indexes with create_indexes(indexes)

Upvotes: 4

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