Database.Persist.Join
Contents
- class  RunJoin a  where- type Result a
- runJoin :: PersistBackend m => a -> m (Result a)
 
- data  SelectOneMany one many = SelectOneMany {- somFilterOne :: [Filter one]
- somOrderOne :: [Order one]
- somFilterMany :: [Filter many]
- somOrderMany :: [Order many]
- somFilterKeys :: [Key one] -> Filter many
- somGetKey :: many -> Key one
- somIncludeNoMatch :: Bool
 
- selectOneMany :: ([Key one] -> Filter many) -> (many -> Key one) -> SelectOneMany one many
Typeclass
Methods
runJoin :: PersistBackend m => a -> m (Result a)Source
Instances
| (PersistEntity one, PersistEntity many, Ord (Key one)) => RunJoin (SelectOneMany one many) | 
One-to-many relation
data SelectOneMany one many Source
Constructors
| SelectOneMany | |
| Fields 
 | |
Instances
| (PersistEntity one, PersistEntity many, Ord (Key one)) => RunJoin (SelectOneMany one many) | |
| (PersistEntity one, PersistEntity many, Eq (Key one)) => RunJoin (SelectOneMany one many) | 
selectOneMany :: ([Key one] -> Filter many) -> (many -> Key one) -> SelectOneMany one manySource