46 lines
1.3 KiB
Haskell
46 lines
1.3 KiB
Haskell
module Handler.Login where
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import Import
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data Credentials = Credentials
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{ credentialsName :: Text
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, credentialsPasswd :: Text
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}
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deriving Show
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getLoginR :: Handler Html
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getLoginR = do
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(loginWidget, enctype) <- generateFormPost loginForm
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defaultLayout $ do
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$(widgetFile "login")
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postLoginR :: Handler Html
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postLoginR = do
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((result, loginWidget), enctype) <- runFormPost loginForm
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case result of
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FormSuccess cred -> do
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tuser <- runDB $ selectFirst [UserName ==. credentialsName cred] []
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case tuser of
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Just user -> do
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case credentialsPasswd cred == userPassword (entityVal user) of
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True -> do
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setSession "username" $ userName (entityVal user)
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setMessage $ [shamlet|<pre>Successfully logged in|]
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redirect $ HomeR
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False -> do
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setMessage $ [shamlet|<pre>Login error|]
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redirect $ LoginR
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Nothing -> do
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setMessage $ [shamlet|<pre>User does not exist|]
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redirect $ LoginR
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loginForm :: Form Credentials
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loginForm = renderDivs $ Credentials
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<$> areq textField "Username" Nothing
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<*> areq passwordField "Password" Nothing
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getLogoutR :: Handler Html
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getLogoutR = do
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deleteSession "username"
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setMessage $ [shamlet|<pre>Succesfully logged out|]
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redirect $ HomeR
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