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Summary: Pull Request resolved: https://github.com/facebookincubator/ent/pull/38 Only `IsNil` and `NotNil` predicates are supported this moment Reviewed By: alexsn Differential Revision: D17444976 fbshipit-source-id: 37336fa0bc7749af995933baee2e23bb7366dd78
User-Card O2O Relation Example
An example for a O2O relation between a User and Card.
In the example, a User can have only one card, and a card must have exactly one owner (required edge).
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go generate ./...