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Catalog / greatghoul / validates_nested_uniqueness
Public GitHub Catalog Discovered Nov 2, 2026

greatghoul / validates_nested_uniqueness

Allows you to add a uniqueness constraint on an attribute so that when the model is on the other side of a has_many relationship the uniqueness will be respected (in nested circumstances). Rails built-in uniqueness works by issuing an SQL query so in memory objects are not validated properly.

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