Hoogle Search

Within LTS Haskell 24.6 (ghc-9.10.2)

Note that Stackage only displays results for the latest LTS and Nightly snapshot. Learn more.

Exact lookup

1. persistIdField :: PersistEntity record => EntityField record (Key record)

   persistent-redis	Database.Persist.Redis

   A meta-operation to retrieve the Key EntityField.

2. persistUniqueKeys :: PersistEntity record => record -> [Unique record]

   persistent-redis	Database.Persist.Redis

   A meta operation to retrieve all the Unique keys.

3. persistUniqueToFieldNames :: PersistEntity record => Unique record -> NonEmpty (FieldNameHS, FieldNameDB)

   persistent-redis	Database.Persist.Redis

   A lower level operation.

4. persistUniqueToValues :: PersistEntity record => Unique record -> [PersistValue]

   persistent-redis	Database.Persist.Redis

   A lower level operation.

5. getPersistMap :: PersistValue -> Either Text [(Text, PersistValue)]

   persistent	Database.Persist

   FIXME Add documentation to that.

6. class HasPersistBackend backend

   persistent	Database.Persist.Class

   Class which allows the plucking of a BaseBackend backend from some larger type. For example, instance HasPersistBackend (SqlReadBackend, Int) where type BaseBackend (SqlReadBackend, Int) = SqlBackend persistBackend = unSqlReadBackend . fst

7. class HasPersistBackend backend => IsPersistBackend backend

   persistent	Database.Persist.Class

   Class which witnesses that backend is essentially the same as BaseBackend backend. That is, they're isomorphic and backend is just some wrapper over BaseBackend backend.

8. fromPersistValue :: PersistField a => PersistValue -> Either Text a

   persistent	Database.Persist.Class

   No documentation available.

9. fromPersistValueJSON :: FromJSON a => PersistValue -> Either Text a

   persistent	Database.Persist.Class

   Convenience function for getting a free PersistField instance from a type with JSON instances. The JSON parser used will accept JSON values other that object and arrays. So, if your instance serializes the data to a JSON string, this will still work. Example usage in combination with toPersistValueJSON:

   instance PersistField MyData where
   fromPersistValue = fromPersistValueJSON
   toPersistValue = toPersistValueJSON
   

10. fromPersistValues :: PersistEntity record => [PersistValue] -> Either Text record

    persistent	Database.Persist.Class

    A lower-level operation to convert from database values to a Haskell record.

Page 41 of many | Previous | Next