yesodweb / yesodweb/persistent
Enforcing uniqueness constraint for MongoDB
Nobody has claimed this yet.
- Dominant language
- Haskell
- Stars
- 486
- Forks
- 306
- PR merge metrics
- No merged PRs in 30d
Description
While looking on why the tests was failing for this PR, I observed that the uniqueness constraint was not setup for MongoDB and it has been mentioned explicitly in the documentation.
With the presence of the createIndex function in mongoDB package, it should be possible to implement it. Is there any reason why it has not been implemented ?
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
Start by reviewing the tests referenced in pull request 618 and the MongoDB backend's use of the mongoDB package's createIndex function. Determine where uniqueness constraints are defined for other backends, then implement equivalent MongoDB index handling and verify that the uniqueness tests pass.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- haskell, mongodb
- Domain
- databases
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100