Popularity
8.7
Stable
Activity
0.0
Stable
5
28
3
Monthly Downloads: 3
Programming language: Haskell
License: MIT License
Tags:
Database
Persistent
Latest version: v0.1.0
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README
persistent-database-url
Converts the parameters parsed from a database url to the concrete configuration types required by persistent.
Currently, only persistent-postgresql's PostgresConf is provided.
Installation
cabal install persistent-database-url
Example Usage
Adjusting the Yesod scaffold to run on Heroku:
config/settings.yml
database-url: "_env:DATABASE_URL:postgres://user:pass@localhost:5432/dbname"
database-pool-size: "_env:DB_POOL:5"
Settings.hs:
import Database.Persist.URL (fromDatabaseUrl)
instance FromJSON AppSettings where
parseJSON = withObject "AppSettings" $ \o -> do
appDatabaseConf <- fromDatabaseUrl
<$> o .: "database-pool-size"
<*> o .: "database-url"
-- ...
return AppSettings {..}
How to run tests
stack test