Skip to content

Instantly share code, notes, and snippets.

@BenSchZA

BenSchZA/filter_association.ex

Last active August 17, 2020 08:46
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save BenSchZA/40da2989164e755de7bac8ad278ad9a7 to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save BenSchZA/40da2989164e755de7bac8ad278ad9a7 to your computer and use it in GitHub Desktop.
Download ZIP
Filter by has_many association
Raw
filter_association.ex
from(record in Domain.DHR.DeviceHistoryRecord,
left_join: failures in assoc(record, :failures), on: failures.device_history_record_id == entry.id,
where: ilike(failures.type, ^"%#{query}%"),
distinct: entry.id
)
@BenSchZA
Copy link
Author

BenSchZA commented Aug 17, 2020

I'd like to query all DeviceHistoryRecords that have a failure of the given type. failures has a has_many/belongs_to relationship with the DeviceHistoryRecord.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment