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Avoid duplicate packages on tag page (fixes #116)

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This commit is contained in:
Michael Snoyman 2015-08-13 21:40:04 +03:00
parent c0b3ea9302
commit bb01d34d8c
1 changed files with 6 additions and 3 deletions
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9
Handler/Tag.hs
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@ -22,9 +22,12 @@ getTagR :: Slug -> Handler Html
getTagR tagSlug = do
-- FIXME arguably: check if this tag is banned. Leaving it as displayed for
-- now, since someone needs to go out of their way to find it.
tags <- runDB $ selectList [TagTag ==. tagSlug] [Asc TagPackage]
packages <- fmap catMaybes $ forM tags $ \(Entity _ t) -> do
let pname = tagPackage t
packages' <- runDB $ E.select $ E.from $ \tag -> do
E.groupBy (tag E.^. TagPackage)
E.where_ $ tag E.^. TagTag E.==. E.val tagSlug
E.orderBy [E.asc $ tag E.^. TagPackage]
return $ tag E.^. TagPackage
packages <- fmap catMaybes $ forM packages' $ \(E.Value pname) -> do
mp <- getPackage $ toPathPiece pname
return $ case mp of
Nothing -> Nothing