Ktor includes support for Velocity templates through the Velocity feature. Initialize the Velocity feature with the VelocityEngine:
io.ktor.velocity.Velocity
in the artifact io.ktor:ktor-velocity:$ktor_version.
dependencies {
compile "io.ktor:ktor-velocity:$ktor_version"
}
dependencies {
compile("io.ktor:ktor-velocity:$ktor_version")
}
<project>
...
<dependencies>
<dependency>
<groupId>io.ktor</groupId>
<artifactId>ktor-velocity</artifactId>
<version>${ktor.version}</version>
<scope>compile</scope>
</dependency>
</dependencies>
</project>
You can install Velocity, and configure the VelocityEngine.
install(Velocity) { // this: VelocityEngine
setProperty("resource.loader", "string");
addProperty("string.resource.loader.class", StringResourceLoader::class.java.name)
addProperty("string.resource.loader.repository.static", "false")
init() // need to call `init` before trying to retrieve string repository
(getApplicationAttribute(StringResourceLoader.REPOSITORY_NAME_DEFAULT) as StringResourceRepository).apply {
putStringResource("test.vl", "<p>Hello, \$id</p><h1>\$title</h1>")
}
}
When Velocity is configured, you can call the call.respond method with a VelocityContent instance:
routing {
val model = mapOf("id" to 1, "title" to "Hello, World!")
get("/") {
call.respond(VelocityContent("test.vl", model, "e"))
}
}