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examplary course-shorthand-filter in terms-list

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Gregor Kleen 2018-06-21 11:18:01 +02:00
parent 710ace42bf
commit 0a433f06a5
1 changed files with 7 additions and 0 deletions
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7
src/Handler/Term.hs
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@ -87,6 +87,13 @@ getTermShowR = do
, dbtFilter = [ ( "active" , dbtFilter = [ ( "active"
, FilterColumn $ \term -> (term E.^. TermActive :: E.SqlExpr (E.Value Bool)) , FilterColumn $ \term -> (term E.^. TermActive :: E.SqlExpr (E.Value Bool))
) )
, ( "course"
, FilterColumn $ \term csh -> case csh of -- FilterColumn-Lambdas are
[] -> E.val True :: E.SqlExpr (E.Value Bool)
cshs -> E.exists . E.from $ \course -> do
E.where_ $ course E.^. CourseTerm E.==. term E.^. TermId
E.&&. course E.^. CourseShorthand `E.in_` E.valList cshs
)
] ]
, dbtAttrs = tableDefault , dbtAttrs = tableDefault
, dbtIdent = "terms" :: Text , dbtIdent = "terms" :: Text