Mongoid Criteria unexpected results when searching a document by id

Asked Mar 04 '14 at 21:15

Active Mar 25 '14 at 15:25

Viewed 79 times

I have a Mongoid Criteria of users and I want to find a user. Given a user that I'm sure doesn't exists in the criteria:

>> users.where(email: user.email).exists?
=> false

>> users.map(&:id).include?(user.id)
=> false

When I search by id I always get the user instead of nil:

>> users.find(user.id)
=> #<User _id: 521a43b37

>> users.where(id: user.id).first
=> #<User _id: 521a43b37

>> users.where(_id: user.id).first
=> #<User _id: 521a43b37

>> users.where(id: user.id).exists?
=> true

What am I doing wrong?

Thanks in advance.

PS: mongoid (4.0.0.beta1), rails (4.0.1), ruby (2.1.0), mongoDB (2.4.9)

edited Mar 04 '14 at 21:44

asked Mar 04 '14 at 21:15

cortex

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What does `users.map(&:id)` return? – Agis Mar 04 '14 at 21:26
An array of user_ids: `[BSON::ObjectId('5314fd245669630667bc0000'), ...]`. – cortex Mar 04 '14 at 21:34
So what `users.map(&:id).first` outputs for example? – Agis Mar 04 '14 at 21:34
`>> users.map(&:id).first => BSON::ObjectId('4fbdb527e8c355d83ba6e4f0')` – cortex Mar 04 '14 at 21:37
And what `users.map(&:_id).first` gives? – Agis Mar 04 '14 at 21:41
Exactly the same. I have tried the queries with `user.id`, `user._id`, `user`. Also `where(_id: ...)`. – cortex Mar 04 '14 at 21:43
Is there any possibility that the `user` you are having trouble with is an incomplete record (that has no `email`) ? – xlembouras Mar 04 '14 at 22:05
No, it has email and it's a valid user. Besides there are not users with email `nil`. – cortex Mar 04 '14 at 22:47

Mongoid Criteria unexpected results when searching a document by id

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