526 lines
25 KiB
Haskell
526 lines
25 KiB
Haskell
{-# LANGUAGE RecordWildCards, NamedFieldPuns #-}
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{-# LANGUAGE NoImplicitPrelude #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE MultiWayIf #-}
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{-# LANGUAGE PartialTypeSignatures #-}
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{-# LANGUAGE RecordWildCards, NamedFieldPuns, TupleSections #-}
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{-# LANGUAGE ViewPatterns #-}
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{-# LANGUAGE ScopedTypeVariables #-}
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{-# LANGUAGE TemplateHaskell #-}
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{-# LANGUAGE QuasiQuotes #-}
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{-# LANGUAGE MultiParamTypeClasses #-}
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{-# LANGUAGE TypeFamilies #-}
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{-# LANGUAGE TypeOperators #-}
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{-# LANGUAGE FlexibleContexts #-}
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module Handler.Course where
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import Import
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import Control.Lens
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import Utils.Lens
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import Utils.TH
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import Handler.Utils
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import Handler.Utils.Table.Cells
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-- import Data.Time
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import qualified Data.Text as T
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import Data.Function ((&))
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-- import Yesod.Form.Bootstrap3
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import qualified Data.Set as Set
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import qualified Data.Map as Map
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import Colonnade hiding (fromMaybe,bool)
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-- import Yesod.Colonnade
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import qualified Database.Esqueleto as E
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import qualified Data.UUID.Cryptographic as UUID
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-- NOTE: Outdated way to use dbTable; see ProfileDataR Handler for a more recent method.
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type CourseTableData = DBRow (Entity Course, Int64, Bool, Entity School)
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colCourse :: IsDBTable m a => Colonnade _ CourseTableData (DBCell m a)
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colCourse = sortable (Just "course") (i18nCell MsgCourse)
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$ \DBRow{ dbrOutput=(Entity cid Course{..}, _, _, _) } ->
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anchorCell (CourseR courseTerm courseSchool courseShorthand CShowR)
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[whamlet|#{display courseName}|]
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colCourseDescr :: IsDBTable m a => Colonnade Sortable CourseTableData (DBCell m a)
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colCourseDescr = sortable (Just "course") (i18nCell MsgCourse) $ do
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course <- view $ _dbrOutput . _1 . _entityVal
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return $ courseCell course
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colDescription :: IsDBTable m a => Colonnade Sortable CourseTableData (DBCell m a)
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colDescription = sortable Nothing (i18nCell MsgCourseDescription)
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$ \DBRow{ dbrOutput=(Entity cid Course{..}, _, _, _) } ->
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case courseDescription of
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Nothing -> mempty
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(Just descr) -> cell $ modalStatic descr
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colCShort :: IsDBTable m a => Colonnade _ CourseTableData (DBCell m a)
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colCShort = sortable (Just "cshort") (i18nCell MsgCourseShort)
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$ \DBRow{ dbrOutput=(Entity cid Course{..}, _, _, _) } ->
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anchorCell (CourseR courseTerm courseSchool courseShorthand CShowR) [whamlet|#{display courseShorthand}|]
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colCShortDescr :: IsDBTable m a => Colonnade _ CourseTableData (DBCell m a)
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colCShortDescr = sortable (Just "cshort") (i18nCell MsgCourseShort)
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$ \DBRow{ dbrOutput=(Entity cid Course{..}, _, _, _) } -> mappend
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( anchorCell (CourseR courseTerm courseSchool courseShorthand CShowR) [whamlet|#{display courseShorthand}|] )
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( case courseDescription of
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Nothing -> mempty
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(Just descr) -> cell
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[whamlet|<span style="float:right"> ^{modalStatic descr} |]
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)
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colTerm :: IsDBTable m a => Colonnade _ CourseTableData (DBCell m a)
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colTerm = sortable (Just "term") (i18nCell MsgTerm)
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$ \DBRow{ dbrOutput=(Entity cid Course{..}, _, _, _) } ->
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anchorCell (TermCourseListR courseTerm) [whamlet|#{display courseTerm}|]
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colSchool :: IsDBTable m a => Colonnade _ CourseTableData (DBCell m a)
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colSchool = sortable (Just "school") (i18nCell MsgCourseSchool)
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$ \DBRow{ dbrOutput=(Entity _ Course{..}, _, _, Entity _ School{..}) } ->
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anchorCell (TermSchoolCourseListR courseTerm courseSchool) [whamlet|#{display schoolName}|]
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colSchoolShort :: IsDBTable m a => Colonnade _ CourseTableData (DBCell m a)
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colSchoolShort = sortable (Just "schoolshort") (i18nCell MsgCourseSchoolShort)
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$ \DBRow{ dbrOutput=(Entity _ Course{..}, _, _, Entity _ School{..}) } ->
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anchorCell (TermSchoolCourseListR courseTerm courseSchool) [whamlet|#{display schoolShorthand}|]
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colRegFrom :: IsDBTable m a => Colonnade _ CourseTableData (DBCell m a)
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colRegFrom = sortable (Just "register-from") (i18nCell MsgRegisterFrom)
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$ \DBRow{ dbrOutput=(Entity cid Course{..}, _, _, _) } ->
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maybe mempty timeCell courseRegisterFrom
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-- cell $ traverse (formatTime SelFormatDateTime) courseRegisterFrom >>= maybe mempty toWidget
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colRegTo :: IsDBTable m a => Colonnade _ CourseTableData (DBCell m a)
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colRegTo = sortable (Just "register-to") (i18nCell MsgRegisterTo)
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$ \DBRow{ dbrOutput=(Entity cid Course{..}, _, _, _) } ->
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cell $ traverse (formatTime SelFormatDateTime) courseRegisterTo >>= maybe mempty toWidget
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colParticipants :: IsDBTable m a => Colonnade _ CourseTableData (DBCell m a)
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colParticipants = sortable (Just "participants") (i18nCell MsgCourseMembers)
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$ \DBRow{ dbrOutput=(Entity cid Course{..}, currentParticipants, _, _) } -> textCell $ case courseCapacity of
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Nothing -> MsgCourseMembersCount currentParticipants
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Just max -> MsgCourseMembersCountLimited currentParticipants max
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colRegistered :: IsDBTable m a => Colonnade _ CourseTableData (DBCell m a)
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colRegistered = sortable (Just "registered") (i18nCell MsgRegistered)
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$ \DBRow{ dbrOutput=(Entity cid Course{..}, _, registered, _) } -> tickmarkCell registered
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type CourseTableExpr = E.SqlExpr (Entity Course) `E.InnerJoin` E.SqlExpr (Entity School)
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course2Participants :: CourseTableExpr -> E.SqlExpr (E.Value Int64)
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course2Participants (course `E.InnerJoin` _school) = E.sub_select . E.from $ \courseParticipant -> do
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E.where_ $ courseParticipant E.^. CourseParticipantCourse E.==. course E.^. CourseId
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return (E.countRows :: E.SqlExpr (E.Value Int64))
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course2Registered :: Maybe UserId -> CourseTableExpr -> E.SqlExpr (E.Value Bool)
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course2Registered muid (course `E.InnerJoin` _school) = E.exists . E.from $ \courseParticipant -> do
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E.where_ $ courseParticipant E.^. CourseParticipantCourse E.==. course E.^. CourseId
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E.&&. E.just (courseParticipant E.^. CourseParticipantUser) E.==. E.val muid
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makeCourseTable :: ( IsDBTable m x, ToSortable h, Functor h )
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=> _ -> Colonnade h CourseTableData (DBCell m x) -> PSValidator m x -> Handler (DBResult m x)
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makeCourseTable whereClause colChoices psValidator = do
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muid <- maybeAuthId
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let dbtSQLQuery :: CourseTableExpr -> E.SqlQuery _
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dbtSQLQuery qin@(course `E.InnerJoin` school) = do
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E.on $ course E.^. CourseSchool E.==. school E.^. SchoolId
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let participants = course2Participants qin
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let registered = course2Registered muid qin
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E.where_ $ whereClause (course, participants, registered)
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return (course, participants, registered, school)
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dbtProj :: DBRow _ -> MaybeT (ReaderT SqlBackend (HandlerT UniWorX IO)) CourseTableData
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dbtProj = traverse $ \(course, E.Value participants, E.Value registered, school) -> return (course, participants, registered, school)
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dbTable psValidator $ DBTable
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{ dbtSQLQuery
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, dbtColonnade = colChoices
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, dbtProj
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, dbtSorting = Map.fromList -- OverloadedLists does not work with the templates here
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[ ( "course", SortColumn $ \(course `E.InnerJoin` _school) -> course E.^. CourseName)
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, ( "cshort", SortColumn $ \(course `E.InnerJoin` _school) -> course E.^. CourseShorthand)
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, ( "term" , SortColumn $ \(course `E.InnerJoin` _school) -> course E.^. CourseTerm)
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, ( "school", SortColumn $ \(_course `E.InnerJoin` school) -> school E.^. SchoolName)
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, ( "schoolshort", SortColumn $ \(_course `E.InnerJoin` school) -> school E.^. SchoolShorthand)
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, ( "register-from", SortColumn $ \(course `E.InnerJoin` _school) -> course E.^. CourseRegisterFrom)
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, ( "register-to", SortColumn $ \(course `E.InnerJoin` _school) -> course E.^. CourseRegisterTo)
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, ( "participants", SortColumn $ course2Participants )
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, ( "registered", SortColumn $ course2Registered muid)
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]
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, dbtFilter = Map.fromList -- OverloadedLists does not work with the templates here
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[ ( "course", FilterColumn $ \(course `E.InnerJoin` _school:: CourseTableExpr) criterias -> if
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| Set.null criterias -> E.val True :: E.SqlExpr (E.Value Bool)
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| otherwise -> course E.^. CourseName `E.in_` E.valList (Set.toList criterias)
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)
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, ( "cshort", FilterColumn $ \(course `E.InnerJoin` _school :: CourseTableExpr) criterias -> if
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| Set.null criterias -> E.val True :: E.SqlExpr (E.Value Bool)
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| otherwise -> course E.^. CourseShorthand `E.in_` E.valList (Set.toList criterias)
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)
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, ( "term" , FilterColumn $ \(course `E.InnerJoin` _school :: CourseTableExpr) criterias -> if
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| Set.null criterias -> E.val True :: E.SqlExpr (E.Value Bool)
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| otherwise -> course E.^. CourseTerm `E.in_` E.valList (Set.toList criterias)
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)
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-- , ( "school", FilterColumn $ \(_course `E.InnerJoin` school :: CourseTableExpr) criterias -> if
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-- | Set.null criterias -> E.val True :: E.SqlExpr (E.Value Bool)
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-- | otherwise -> school E.^. SchoolName `E.in_` E.valList (Set.toList criterias)
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-- )
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, ( "school", FilterColumn $ \(_course `E.InnerJoin` school :: CourseTableExpr) ->
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emptyOrIn $ school E.^. SchoolName -- TODO: Refactor all?!
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)
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, ( "schoolshort", FilterColumn $ \(_course `E.InnerJoin` school :: CourseTableExpr) criterias -> if
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| Set.null criterias -> E.val True :: E.SqlExpr (E.Value Bool)
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| otherwise -> school E.^. SchoolShorthand `E.in_` E.valList (Set.toList criterias)
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)
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]
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, dbtStyle = def
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, dbtIdent = "courses" :: Text
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}
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getCourseListR :: Handler Html
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getCourseListR = do -- TODO: Suchfunktion für Kurse und Kürzel!!!
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muid <- maybeAuthId
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let colonnade = widgetColonnade $ mconcat
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[ colCourseDescr
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, colCShort
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, colTerm
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, maybe mempty (const colRegistered) muid
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, colSchool
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]
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whereClause = const $ E.val True
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validator = def
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& defaultSorting [("course", SortAsc), ("term", SortDesc)]
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((), coursesTable) <- makeCourseTable whereClause colonnade validator
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defaultLayout $ do
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setTitleI MsgCourseListTitle
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[whamlet|TODO: Such-/Filterfunktion hier einbauen|] -- TODO
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$(widgetFile "courses")
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getTermCurrentR :: Handler Html
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getTermCurrentR = do
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termIds <- runDB $ selectKeysList [TermActive ==. True] [Desc TermName]
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case fromNullable termIds of
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Nothing -> notFound
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(Just (maximum -> tid)) -> -- getTermCourseListR tid
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redirect $ TermCourseListR tid -- redirect avoids problematic breadcrumbs, headings, etc.
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getTermSchoolCourseListR :: TermId -> SchoolId -> Handler Html
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getTermSchoolCourseListR tid ssh = do
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void . runDB $ get404 tid -- Just ensure the term exists
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School{schoolName=school} <- runDB $ get404 ssh -- Just ensure the term exists
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muid <- maybeAuthId
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let colonnade = widgetColonnade $ mconcat
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[ dbRow
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, colCShortDescr
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, colRegFrom
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, colRegTo
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, colParticipants
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, maybe mempty (const colRegistered) muid
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]
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whereClause = \(course, _, _) ->
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course E.^. CourseTerm E.==. E.val tid
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E.&&. course E.^. CourseSchool E.==. E.val ssh
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validator = def
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& defaultSorting [("cshort", SortAsc)]
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((), coursesTable) <- makeCourseTable whereClause colonnade validator
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defaultLayout $ do
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setTitleI $ MsgTermSchoolCourseListTitle tid school
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$(widgetFile "courses")
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getTermCourseListR :: TermId -> Handler Html
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getTermCourseListR tid = do
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void . runDB $ get404 tid -- Just ensure the term exists
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muid <- maybeAuthId
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let colonnade = widgetColonnade $ mconcat
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[ dbRow
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, colCShortDescr
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, colSchoolShort
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, colRegFrom
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, colRegTo
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, colParticipants
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, maybe mempty (const colRegistered) muid
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]
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whereClause = \(course, _, _) -> course E.^. CourseTerm E.==. E.val tid
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validator = def
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& defaultSorting [("cshort", SortAsc)]
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((), coursesTable) <- makeCourseTable whereClause colonnade validator
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defaultLayout $ do
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setTitleI . MsgTermCourseListTitle $ tid
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$(widgetFile "courses")
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getCShowR :: TermId -> SchoolId -> CourseShorthand -> Handler Html
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getCShowR tid ssh csh = do
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mbAid <- maybeAuthId
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(courseEnt,(schoolMB,participants,registered),lecturers) <- runDB $ do
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courseEnt@(Entity cid course) <- getBy404 $ TermSchoolCourseShort tid ssh csh
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dependent <- (,,)
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<$> get (courseSchool course) -- join -- just fetch full school name here
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<*> count [CourseParticipantCourse ==. cid] -- join
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<*> (case mbAid of -- TODO: Someone please refactor this late-night mess here!
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Nothing -> return False
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(Just aid) -> do regL <- getBy (UniqueParticipant aid cid)
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return $ isJust regL)
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lecturers <- E.select $ E.from $ \(lecturer `E.InnerJoin` user) -> do
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E.on $ lecturer E.^. LecturerUser E.==. user E.^. UserId
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E.where_ $ lecturer E.^. LecturerCourse E.==. E.val cid
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return $ user E.^. UserDisplayName
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return $ (courseEnt,dependent,E.unValue <$> lecturers)
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let course = entityVal courseEnt
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(regWidget, regEnctype) <- generateFormPost $ identifyForm "registerBtn" $ registerForm registered $ courseRegisterSecret course
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registrationOpen <- (==Authorized) <$> isAuthorized (CourseR tid ssh csh CRegisterR) True
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mRegFrom <- traverse (formatTime SelFormatDateTime) $ courseRegisterFrom course
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mRegTo <- traverse (formatTime SelFormatDateTime) $ courseRegisterTo course
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defaultLayout $ do
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setTitle $ [shamlet| #{toPathPiece tid} - #{csh}|]
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$(widgetFile "course")
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registerForm :: Bool -> Maybe Text -> Form Bool
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registerForm registered msecret extra = do
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(msecretRes', msecretView) <- case msecret of
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(Just _) | not registered -> bimap Just Just <$> (mreq textField (fslpI MsgCourseSecret "Code") Nothing)
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_ -> return (Nothing,Nothing)
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(btnRes, btnView) <- mreq (buttonField $ bool BtnRegister BtnDeregister registered) "buttonField ignores settings anyway" Nothing
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let widget = $(widgetFile "widgets/registerForm")
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let msecretRes | Just res <- msecretRes' = Just <$> res
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| otherwise = FormSuccess Nothing
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return (btnRes *> ((==msecret) <$> msecretRes), widget) -- checks that correct button was pressed, and ignores result of btnRes
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postCRegisterR :: TermId -> SchoolId -> CourseShorthand -> Handler Html
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postCRegisterR tid ssh csh = do
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aid <- requireAuthId
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(cid, course, registered) <- runDB $ do
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(Entity cid course) <- getBy404 $ TermSchoolCourseShort tid ssh csh
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registered <- isJust <$> (getBy $ UniqueParticipant aid cid)
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return (cid, course, registered)
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((regResult,_), _) <- runFormPost $ identifyForm "registerBtn" $ registerForm registered $ courseRegisterSecret course
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case regResult of
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(FormSuccess codeOk)
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| registered -> do
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runDB $ deleteBy $ UniqueParticipant aid cid
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addMessageI "info" MsgCourseDeregisterOk
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| codeOk -> do
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actTime <- liftIO $ getCurrentTime
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regOk <- runDB $ insertUnique $ CourseParticipant cid aid actTime
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when (isJust regOk) $ addMessageI "success" MsgCourseRegisterOk
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| otherwise -> addMessageI "danger" MsgCourseSecretWrong
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(_other) -> return () -- TODO check this!
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redirect $ CourseR tid ssh csh CShowR
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getCourseNewR :: Handler Html
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getCourseNewR = do
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-- TODO: Defaults für Semester hier ermitteln und übergeben
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courseEditHandler True Nothing
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postCourseNewR :: Handler Html
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postCourseNewR = courseEditHandler False Nothing
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getCEditR :: TermId -> SchoolId -> CourseShorthand -> Handler Html
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getCEditR tid ssh csh = do
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course <- runDB $ getBy $ TermSchoolCourseShort tid ssh csh
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courseEditHandler True course
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postCEditR :: TermId -> SchoolId -> CourseShorthand -> Handler Html
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postCEditR tid ssh csh = do
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course <- runDB $ getBy $ TermSchoolCourseShort tid ssh csh
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courseEditHandler False course
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courseDeleteHandler :: Handler Html -- not called anywhere yet
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courseDeleteHandler = undefined
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{- TODO
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| False -- DELETE -- TODO: This no longer works that way!!! See new way in Handler.Term.termEditHandler
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, Just cid <- cfCourseId res -> do
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runDB $ deleteCascade cid -- TODO Sicherheitsabfrage einbauen!
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let cti = toPathPiece $ cfTerm res
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addMessage "info" [shamlet| Kurs #{cti}/#{cfShort res} wurde gelöscht!|]
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redirect $ TermCourseListR $ cfTerm res
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-}
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courseEditHandler :: Bool -> Maybe (Entity Course) -> Handler Html
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courseEditHandler isGet course = do
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$logDebug "€€€€€€ courseEditHandler started"
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aid <- requireAuthId -- TODO: Verify that Editor is owner of the Course to be Edited!!!
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((result, formWidget), formEnctype) <- runFormPost . newCourseForm =<< for course courseToForm
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case result of
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(FormSuccess res@(
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CourseForm { cfCourseId = Nothing
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, cfShort = csh
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, cfSchool = ssh
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, cfTerm = tid
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})) -> do -- create new course
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now <- liftIO getCurrentTime
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insertOkay <- runDB $ insertUnique $ Course
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{ courseName = cfName res
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, courseDescription = cfDesc res
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, courseLinkExternal = cfLink res
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, courseShorthand = cfShort res
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, courseTerm = cfTerm res
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, courseSchool = cfSchool res
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, courseCapacity = cfCapacity res
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, courseRegisterSecret = cfSecret res
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, courseMaterialFree = cfMatFree res
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, courseRegisterFrom = cfRegFrom res
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, courseRegisterTo = cfRegTo res
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, courseDeregisterUntil = cfDeRegUntil res
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}
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case insertOkay of
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(Just cid) -> do
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runDB $ do
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insert_ $ CourseEdit aid now cid
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insert_ $ Lecturer aid cid
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addMessageI "info" $ MsgCourseNewOk tid ssh csh
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redirect $ TermCourseListR tid
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Nothing ->
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addMessageI "danger" $ MsgCourseNewDupShort tid ssh csh
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(FormSuccess res@(
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CourseForm { cfCourseId = Just cid
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, cfShort = csh
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, cfSchool = ssh
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, cfTerm = tid
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})) -> do -- edit existing course
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now <- liftIO getCurrentTime
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-- addMessage "debug" [shamlet| #{show res}|]
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success <- runDB $ do
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old <- get cid
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case old of
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Nothing -> addMessageI "error" MsgInvalidInput $> False
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(Just oldCourse) -> do
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updOkay <- myReplaceUnique cid ( -- replaceUnique requires Eq Course, which we cannot have
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Course { courseName = cfName res
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, courseDescription = cfDesc res
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, courseLinkExternal = cfLink res
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, courseShorthand = cfShort res
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, courseTerm = cfTerm res
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, courseSchool = cfSchool res
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, courseCapacity = cfCapacity res
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, courseRegisterSecret = cfSecret res
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, courseMaterialFree = cfMatFree res
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, courseRegisterFrom = cfRegFrom res
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, courseRegisterTo = cfRegTo res
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, courseDeregisterUntil = cfDeRegUntil res
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}
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)
|
|
case updOkay of
|
|
(Just _) -> addMessageI "danger" (MsgCourseEditDupShort tid ssh csh) $> False
|
|
Nothing -> do
|
|
insert_ $ CourseEdit aid now cid
|
|
addMessageI "success" $ MsgCourseEditOk tid ssh csh
|
|
return True
|
|
when success $ redirect $ CourseR tid ssh csh CShowR
|
|
|
|
(FormFailure _) -> addMessageI "warning" MsgInvalidInput
|
|
(FormMissing) -> return ()
|
|
actionUrl <- fromMaybe CourseNewR <$> getCurrentRoute
|
|
defaultLayout $ do
|
|
setTitleI MsgCourseEditTitle
|
|
$(widgetFile "formPage")
|
|
|
|
|
|
data CourseForm = CourseForm
|
|
{ cfCourseId :: Maybe CourseId
|
|
, cfName :: CourseName
|
|
, cfDesc :: Maybe Html
|
|
, cfLink :: Maybe Text
|
|
, cfShort :: CourseShorthand
|
|
, cfTerm :: TermId
|
|
, cfSchool :: SchoolId
|
|
, cfCapacity :: Maybe Int64
|
|
, cfSecret :: Maybe Text
|
|
, cfMatFree :: Bool
|
|
, cfRegFrom :: Maybe UTCTime
|
|
, cfRegTo :: Maybe UTCTime
|
|
, cfDeRegUntil :: Maybe UTCTime
|
|
}
|
|
|
|
courseToForm :: MonadCrypto m => Entity Course -> m CourseForm
|
|
courseToForm (Entity cid Course{..}) = do
|
|
return $ CourseForm
|
|
{ cfCourseId = Just cid
|
|
, cfName = courseName
|
|
, cfDesc = courseDescription
|
|
, cfLink = courseLinkExternal
|
|
, cfShort = courseShorthand
|
|
, cfTerm = courseTerm
|
|
, cfSchool = courseSchool
|
|
, cfCapacity = courseCapacity
|
|
, cfSecret = courseRegisterSecret
|
|
, cfMatFree = courseMaterialFree
|
|
, cfRegFrom = courseRegisterFrom
|
|
, cfRegTo = courseRegisterTo
|
|
, cfDeRegUntil = courseDeregisterUntil
|
|
}
|
|
|
|
newCourseForm :: Maybe CourseForm -> Form CourseForm
|
|
newCourseForm template = identForm FIDcourse $ \html -> do
|
|
userSchools <- liftHandlerT . runDB $ do
|
|
userId <- liftHandlerT requireAuthId
|
|
(fmap concat . sequence)
|
|
[ map (userLecturerSchool . entityVal) <$> selectList [UserLecturerUser ==. userId] []
|
|
, map (userAdminSchool . entityVal) <$> selectList [UserAdminUser ==. userId] []
|
|
]
|
|
(result, widget) <- flip (renderAForm FormStandard) html $ CourseForm
|
|
<$> pure (cfCourseId =<< template)
|
|
<*> areq (ciField textField) (fslI MsgCourseName) (cfName <$> template)
|
|
<*> aopt htmlField (fslI MsgCourseDescription
|
|
& setTooltip MsgCourseDescriptionTip) (cfDesc <$> template)
|
|
<*> aopt urlField (fslI MsgCourseHomepage) (cfLink <$> template)
|
|
<*> areq (ciField textField) (fslI MsgCourseShorthand
|
|
-- & addAttr "disabled" "disabled"
|
|
& setTooltip MsgCourseShorthandUnique)
|
|
(cfShort <$> template)
|
|
<*> areq termActiveField (fslI MsgCourseSemester) (cfTerm <$> template)
|
|
<*> areq (schoolFieldFor userSchools) (fslI MsgCourseSchool) (cfSchool <$> template)
|
|
<*> aopt (natField "Kapazität") (fslI MsgCourseCapacity
|
|
& setTooltip MsgCourseCapacityTip) (cfCapacity <$> template)
|
|
<*> aopt textField (fslpI MsgCourseSecret "beliebige Zeichenkette"
|
|
& setTooltip MsgCourseSecretTip) (cfSecret <$> template)
|
|
<*> areq checkBoxField (fslI MsgMaterialFree) (cfMatFree <$> template)
|
|
<*> aopt utcTimeField (fslpI MsgRegisterFrom "Datum"
|
|
& setTooltip MsgCourseRegisterFromTip) (cfRegFrom <$> template)
|
|
<*> aopt utcTimeField (fslpI MsgRegisterTo "Datum"
|
|
& setTooltip MsgCourseRegisterToTip) (cfRegTo <$> template)
|
|
<*> aopt utcTimeField (fslpI MsgDeRegUntil "Datum"
|
|
& setTooltip MsgCourseDeregisterUntilTip) (cfDeRegUntil <$> template)
|
|
<* submitButton
|
|
return $ case result of
|
|
FormSuccess courseResult
|
|
| errorMsgs <- validateCourse courseResult
|
|
, not $ null errorMsgs ->
|
|
(FormFailure errorMsgs,
|
|
[whamlet|
|
|
<div class="alert alert-danger">
|
|
<div class="alert__content">
|
|
<h4> Fehler:
|
|
<ul>
|
|
$forall errmsg <- errorMsgs
|
|
<li> #{errmsg}
|
|
^{widget}
|
|
|]
|
|
)
|
|
_ -> (result, widget)
|
|
|
|
|
|
validateCourse :: CourseForm -> [Text]
|
|
validateCourse (CourseForm{..}) =
|
|
[ msg | (False, msg) <-
|
|
[
|
|
( NTop cfRegFrom <= NTop cfRegTo
|
|
, "Ende des Anmeldezeitraums muss nach dem Anfang liegen"
|
|
)
|
|
,
|
|
( NTop cfRegFrom <= NTop cfDeRegUntil
|
|
, "Ende des Abmeldezeitraums muss nach dem Anfang liegen"
|
|
)
|
|
-- No starting date is okay: effective immediately
|
|
-- ( cfHasReg <= (isNothing cfRegFrom)
|
|
-- , "Beginn der Anmeldung angeben oder Anmeldungen deaktivieren"
|
|
-- )
|
|
-- ,
|
|
] ]
|