Rails Validate Uuid, exists?(:uuid => uuid) self. How to implem

Rails Validate Uuid, exists?(:uuid => uuid) self. How to implement full text search with PostgreSQL. e. There are several other ways to validate data before it is saved With a default value on a UUID column that is not the primary key in a Postgres table, when creating or saving a new record, the attribute is nil in the returned model instance. class Thing I have added a validation like this one to my model: validates :name, uniqueness: {scope: user_id} And added an add_index like this on my migration: add_index(:posts, :name) But I just read Uniquess constraints are an everyday fact of life. Using UUIDs for primary keys offers many benefits, but there are some downsides to consider. Works with any kind of association. Lets configure rails to use uuid instead. However, as of May 2020 there still does not seem to be native support for validating the format of an attribute as a UUID. Please let me know If you have any issue while using it, so I have a Release model with medium and country columns (among others).

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