HI Ktor 1 6 7 provides a url dsl to facilitate building new kotlinlang #ktor

HI; Ktor (1.6.7) provides a url {} dsl to facilitate building new urls based on e.g. incoming requests, etc. Unfortunately, this only returns the url as String; would it be possible to allow returning a Url instead of the String ?

Aleksei Tirman [JB]

02/24/2022, 9:04 AM

Could you please share a code snippet for clarifying your question?

Werner Guttmann

02/24/2022, 9:10 AM

Sure:

val newUrl = url {
        path(language.name, areasTerm(language = language))
    }

always returns a String, which makes it hard to access e.g. just the full path of that Url instead everything. Right now I have to fall back to

val url = URLBuilder(
        parameters = ParametersBuilder().apply {
            set(name = "verbund", value = verbund)
            set(name = "show", value = deriveToggleValue(sortOrder = sortOrder))
        }
    ).apply {
        path(language.name, areasTerm(language = language))
    }.build().fullPath

to be able to work with parts of the Url.

Does that make sense ?

Aleksei Tirman [JB]

02/24/2022, 9:17 AM

Yes, it makes sense to UrlBuilder for your case. I think your code could be simplified to the following:

val path = URLBuilder().apply {
    parameters["verbund"] = verbund
    parameters["show"] = deriveToggleValue(sortOrder = sortOrder)
    path(language.name, areasTerm(language = language))
}.build().fullPath

The

url

method is just a helper to build an URL and get it as String.

Werner Guttmann

02/24/2022, 9:19 AM

That’s m point sort of; it’s name is slightly mis-leading, as it doesn’t return a Url 😉

Given that it’s probably highly used, this won’t be easy/possible to change

But how about providing another helper method along the lines of buildUrl { .. } that retuns a Url instead of a String ?

Aleksei Tirman [JB]

02/24/2022, 12:01 PM

Please file an issue if you want to see this method in Ktor.

Werner Guttmann

02/24/2022, 3:30 PM

Done

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