yesodweb / yesodweb/persistent
Missing functions getKeyBy and upsertBy_
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- Dominant language
- Haskell
- Stars
- 486
- Forks
- 306
- PR merge metrics
- No merged PRs in 30d
Description
getBy and upsertBy load the entire row even when that is sometimes not necessary.
Often I just want to upsert without loading the result.
I would use repsert but that takes a key instead of a uniqueness constraint.
getKeyBy would let me implement upsertBy_ myself.
Alternatively, uniqueToFilters :: Unique record -> [Filter record] would let me do it as well.
CC @parsonsmatt
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Locate the existing getBy, upsertBy, and repsert entry points and compare how uniqueness constraints are represented. Clarify whether the requested scope is getKeyBy, upsertBy_, or uniqueToFilters, then add coverage showing the selected API avoids loading an unnecessary row and works across the supported storage methods.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- haskell
- Domain
- database
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 38/100