vertigo_forms/select/
dict_select.rs

1use vertigo::{
2    AttrGroup, Computed, Value, bind, component, computed_tuple, dom, render::render_list,
3};
4
5/// Simple Select component based on map of `i64`->`T` values.
6///
7/// Example:
8/// ```
9/// use vertigo::{DomNode, dom, Value};
10/// use vertigo_forms::DictSelect;
11///
12/// let value = Value::new(1);
13/// let options = Value::new(
14///     vec![
15///         (1, "foo".to_string()),
16///         (2, "bar".to_string()),
17///         (3, "baz".to_string()),
18///     ]
19/// );
20///
21/// dom! {
22///     <DictSelect
23///         value={value.clone()}
24///         options={options}
25///     />
26/// };
27/// ```
28#[component]
29pub fn DictSelect<T: Clone + From<String> + PartialEq + ToString + 'static>(
30    value: Value<i64>,
31    options: Computed<Vec<(i64, T)>>,
32    select: AttrGroup,
33) {
34    let on_change = bind!(value, |new_value: String| {
35        value.set(new_value.parse().unwrap_or_default());
36    });
37
38    // Generate empty option only if initial value does not match any of provided options
39    let empty = computed_tuple!(value, options).render_value_option(|(value, options)| {
40        options
41            .iter()
42            .all(|(key, _)| key != &value)
43            .then(|| dom! { <option value="" selected="selected" /> })
44    });
45
46    let list = bind!(
47        options,
48        value.render_value(move |value| render_list(
49            &options,
50            |(key, _)| key.to_string(),
51            move |(key, item)| {
52                let text_item = item.to_string();
53                if key == &value {
54                    dom! { <option value={&key} selected="selected">{text_item}</option> }
55                } else {
56                    dom! { <option value={&key}>{text_item}</option> }
57                }
58            }
59        ))
60    );
61
62    dom! {
63        <select {on_change} {..select}>
64            {empty}
65            {list}
66        </select>
67    }
68}
vertigo_forms/select/dict_select.rs

vertigo_forms/select/
dict_select.rs
