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Support multiple form data values for same name #417

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Support multiple form data values for same name #417

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16 changes: 11 additions & 5 deletions reflex-dom-core/src/Reflex/Dom/Xhr/FormData.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ import Data.Default
import Data.Map (Map)
import Data.Text (Text)
import Data.Traversable
import Data.Foldable
import qualified GHCJS.DOM.FormData as FD
import Foreign.JavaScript.TH
import GHCJS.DOM.File (getName)
Expand All @@ -20,9 +21,11 @@ import Language.Javascript.JSaddle.Monad (MonadJSM, liftJSM)
import Reflex
import Reflex.Dom.Xhr

-- | A FormData value may be a blob/file or a string. The file can optionally be provided with filename.
data FormValue blob = FormValue_Text Text
| FormValue_File blob (Maybe Text) -- maybe filename
-- | A FormData value may be a blob/file, a string, or a list of such values. The file can optionally be provided with filename.
data FormValue blob
= FormValue_Text Text
| FormValue_File blob (Maybe Text) -- maybe filename
| FormValue_List [FormValue blob]

-- | Performs a POST request with the provided FormData payload
postForms
Expand All @@ -35,10 +38,13 @@ postForms
postForms url payload = do
performMkRequestsAsync $ ffor payload $ \fs -> for fs $ \u -> liftJSM $ do
fd <- FD.newFormData Nothing
iforM_ u $ \k v -> case v of
iforM_ u $ \k v -> appendFormValue k v fd
return $ xhrRequest "POST" url $ def & xhrRequestConfig_sendData .~ fd
where
appendFormValue k v fd = case v of
FormValue_Text t -> FD.append fd k t
FormValue_File b fn -> FD.appendBlob fd k b fn
return $ xhrRequest "POST" url $ def & xhrRequestConfig_sendData .~ fd
FormValue_List vs' -> forM_ vs' $ \v' -> appendFormValue k v' fd

-- | Converts a File (e.g., the output of a 'FileInput') into a 'FormValue'. The filename will be included if it is available.
fileToFormValue :: MonadJSM m => File -> m (FormValue File)
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