Safe Haskell | Safe-Infered |
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Inspiration from a concept by ajdunlap: http://hackage.haskell.org/package/yesod-paginate
But uses an entirely different approach.
There are two pagination functions. One for arbitrary items where you provide the list of things to be paginated:
getSomeRoute = do things' <- getAllThings (things, widget) <- paginate 10 things' defaultLayout $ do [whamlet| $forall thing <- things ^{showThing thing} <div .pagination> ^{widget} |]
And another for paginating directly out of the database, you provide
the same filters as you would to selectList
.
getSomeRoute something = do -- note: things is [Entity val] just like selectList returns (things, widget) <- runDB $ selectPaginated 10 [SomeThing ==. something] [] defaultLayout $ do [whamlet| $forall thing <- things ^{showThing $ entityVal thing} <div .pagination> ^{widget} |]
Both functions return a tuple: the first element being the list of items (or Entities) to display on this page and the second being a widget showing the pagination navagation links.
Documentation
paginateWith :: PageWidget s m -> Int -> [a] -> GHandler s m ([a], GWidget s m ())Source
selectPaginated :: (PersistEntity val, PersistQuery (PersistEntityBackend val) (GHandler s m), MonadTrans (PersistEntityBackend val)) => Int -> [Filter val] -> [SelectOpt val] -> PersistEntityBackend val (GHandler s m) ([Entity val], GWidget s m ())Source
selectPaginatedWith :: (PersistEntity val, PersistQuery (PersistEntityBackend val) (GHandler s m), MonadTrans (PersistEntityBackend val)) => PageWidget s m -> Int -> [Filter val] -> [SelectOpt val] -> PersistEntityBackend val (GHandler s m) ([Entity val], GWidget s m ())Source
module Yesod.Paginator.Widget