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22 lines
763 B
Markdown
22 lines
763 B
Markdown
# Returning With Sequel
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The [`sequel`](https://github.com/jeremyevans/sequel) gem is a database
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toolkit that allows you to interact with most databases. PostgreSQL has
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support for composite primary keys, but `sequel`, which is supposed to return
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the `id` of newly inserted records, isn't sure what to return when faced
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with a composite primary key. You can get around this by telling `sequel`
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exactly what should be returned using the `#returning` method. For instance,
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get it to return just the `id` of the new record:
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```ruby
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DB[:floors].returning(:id).insert(hotel_id: 4, id: 1, ...)
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# [{id: 1}]
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```
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To get it to return both parts of composite key:
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```ruby
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DB[:floors].returning(:id, :hotel_id).insert(hotel_id: 4, id: 1, ...)
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# [{id: 1, hotel_id: 4}]
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```
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