1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
// IMPORTS ---------------------------------------------------------------------
import examples/counter
import gleam/list
import gleam/map.{Map}
import gleam/pair
import lustre
import lustre/element.{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)
}
|
