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# http4k
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Cosmin Marginean
10/10/2023, 7:59 PMI was looking at the way HTML forms are handled and I was wondering if there is a way to use a Bidi Lens for converting the request to an object? This would be particularly useful for larger forms with multiple fields, or when validation needs to be done on the form object as a whole, for example.
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fredrik.nordin
10/11/2023, 8:58 AMBiDiLensSpec.composite()https://github.com/http4k/http4k/blob/eb3a2659a81fa2b04ec3d1808844d253625a2abd/http4k-core/src/main/kotlin/org/http4k/filter/ZipkinTraces.kt#L66 shows an example from the http4 source code.
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Cosmin Marginean
10/11/2023, 10:37 AMInteresting, I'll give that a go, thanks!
FYI, this might be a red herring, I couldn't quite figure out how and where this would be wired to parse a response dynamically (based on the type of the form class)
I'll raise a feature request for this particular thing. It might not be critical, but it would be nice to have something like:
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Body.webForm<MyFormObject>().toLens()(request)