:: a typeCtrl KGHC 9.10.3 · lts/ghc-9.10.x · 248f8f0 · 2026-10-05
Moduleservant-0.20.2Haskell2010
Lookup a potentially value-less query string parameter
with boolean semantics. If the param sym is there without any value,
or if it's there with value "true" or "1", it's interpreted as True.
Otherwise, it's interpreted as False.
Example:
-- /books?publishedtype MyApi = "books" :> QueryFlag "published" :> Get '[JSON] [Book]
Lookup the value associated to the sym query string parameter
and try to extract it as a value of type a.
Example:
-- /books?author=<author name>type MyApi = "books" :> QueryParam "author" Text :> Get '[JSON] [Book]
QueryParam which can be Required, Lenient, or modified otherwise.
(KnownSymbol sym, ToHttpApiData v, HasLink sub, SBoolI (FoldRequired mods)) => HasLink (QueryParam' mods sym v :> sub)Defined in servant-0.20.2 · Servant.Linkstype MkLink (QueryParam' mods sym v :> sub) a = If (FoldRequired mods) v (Maybe v) -> MkLink sub aDefined in servant-0.20.2 · Servant.LinksLookup the values associated to the sym query string parameter
and try to extract it as a value of type [a]. This is typically
meant to support query string parameters of the form
param[]=val1¶m[]=val2 and so on. Note that servant doesn't actually
require the []s and will fetch the values just fine with
param=val1¶m=val2, too.
Example:
-- /books?authors[]=<author1>&authors[]=<author2>&...type MyApi = "books" :> QueryParams "authors" Text :> Get '[JSON] [Book]
(KnownSymbol sym, ToHttpApiData v, HasLink sub) => HasLink (QueryParams sym v :> sub)Defined in servant-0.20.2 · Servant.Linkstype MkLink (QueryParams sym v :> sub) a = [v] -> MkLink sub aDefined in servant-0.20.2 · Servant.Links