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Diffstat (limited to 'examples/nested/src/nested.gleam')
-rw-r--r-- | examples/nested/src/nested.gleam | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/examples/nested/src/nested.gleam b/examples/nested/src/nested.gleam new file mode 100644 index 0000000..89e68f0 --- /dev/null +++ b/examples/nested/src/nested.gleam @@ -0,0 +1,57 @@ +// IMPORTS --------------------------------------------------------------------- + +import examples/counter +import gleam/list +import gleam/map.{type Map} +import gleam/pair +import lustre +import lustre/element.{type Element} +import lustre/element/html.{div} + +// MAIN ------------------------------------------------------------------------ + +pub fn main() { + // A `simple` lustre application doesn't produce `Effect`s. These are best to + // start with if you're just getting started with lustre or you know you don't + // need the runtime to manage any side effects. + let app = lustre.simple(init, update, view) + let assert Ok(_) = lustre.start(app, "[data-lustre-app]", Nil) + + Nil +} + +// MODEL ----------------------------------------------------------------------- + +type Model = + Map(Int, counter.Model) + +fn init(_) -> Model { + use counters, id <- list.fold(list.range(1, 10), map.new()) + + map.insert(counters, id, counter.init(Nil)) +} + +// UPDATE ---------------------------------------------------------------------- + +type Msg = + #(Int, counter.Msg) + +fn update(model: Model, msg: Msg) -> Model { + let #(id, counter_msg) = msg + let assert Ok(counter) = map.get(model, id) + + map.insert(model, id, counter.update(counter, counter_msg)) +} + +// RENDER ---------------------------------------------------------------------- + +fn view(model: Model) -> Element(Msg) { + let counters = { + use rest, id, counter <- map.fold(model, []) + let el = element.map(counter.view(counter), pair.new(id, _)) + + [el, ..rest] + } + + div([], counters) +} |