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Complete functions for channels

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This commit is contained in:
Mats Rauhala 2018-08-15 21:52:04 +03:00
parent f7bc0d420c
commit c05251525b
1 changed files with 4 additions and 4 deletions
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8
src/Database/Channel.hs
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@ -51,10 +51,10 @@ booksChannels bookId = fromRels <$> query q
attachChannel :: (MonadMask m, MonadIO m, MonadSelda m) => Username -> BookID -> Text -> m ()
attachChannel username bookId channel = do
-- XXX: test what happens if channel doesn't exist
[Channel{identifier}] <- fromRels <$> query channelQ
whenM (null <$> query (attachQ identifier)) $
void $ insertGen bookChannels [BookChannel identifier bookId]
mCh <- fromRels <$> query channelQ
forM_ mCh $ \Channel{identifier} ->
whenM (null <$> query (attachQ identifier)) $
void $ insertGen bookChannels [BookChannel identifier bookId]
where
attachQ channelId = do
(channelId' :*: bookId') <- select (gen bookChannels)