/
Record.purs
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/
Record.purs
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module Formless.Transform.Record where
import Prelude
import Data.Newtype (class Newtype, unwrap, wrap)
import Formless.Types.Form (InputField, InputFunction, OutputField)
import Heterogeneous.Mapping as HM
-- | Unwrap every newtype in a record filled with newtypes
data UnwrapField = UnwrapField
instance unwrapField :: (Newtype wrapper x) => HM.Mapping UnwrapField wrapper x where
mapping UnwrapField = unwrap
unwrapRecord :: ∀ r0 r1. HM.HMap UnwrapField r0 r1 => r0 -> r1
unwrapRecord = HM.hmap UnwrapField
-- | Wrap every field in a record with a particular newtype
data WrapField = WrapField
instance wrapField :: (Newtype wrapper x) => HM.Mapping WrapField x wrapper where
mapping WrapField = wrap
wrapRecord :: ∀ r0 r1. HM.HMap WrapField r0 r1 => r0 -> r1
wrapRecord = HM.hmap WrapField
-- | Provided your form type containing a record of only valid outputs
-- | from the result of validation, unwraps the form and every value
-- | in the record to provide a record of only the output values.
unwrapOutputFields
:: ∀ form os os'
. Newtype (form Record OutputField) { | os }
=> HM.HMap UnwrapField { | os } { | os' }
=> form Record OutputField
-> { | os' }
unwrapOutputFields = unwrapRecord <<< unwrap
-- | Provided a record, where each field in the record contains
-- | a value of type `input`, wraps each value in the InputField
-- | type for compatibility with Formless
wrapInputFields
:: ∀ form is is'
. Newtype (form Record InputField) { | is' }
=> HM.HMap WrapField { | is } { | is' }
=> { | is }
-> form Record InputField
wrapInputFields = wrap <<< wrapRecord
-- | Provided a record, where each field in the record contains
-- | a function from `input -> input`, wraps each function in
-- | the InputField type for compatibility with Formless
wrapInputFunctions
:: ∀ form ifs ifs'
. Newtype (form Record InputFunction) { | ifs' }
=> HM.HMap WrapField { | ifs } { | ifs' }
=> { | ifs }
-> form Record InputFunction
wrapInputFunctions = wrap <<< wrapRecord