Возможно, вам придется использовать grouped option
с power-select-multiple
.
hbs
:
{{#power-select-multiple
options=groupedNumbers
selected=number
placeholder="Select some numbers..."
onchange=(action (mut number))
as |number|
}}
{{number}}
{{/power-select-multiple}}
js
:
groupedNumbers: [
{ groupName: 'Smalls', options: ['one', 'two', 'three'] },
{ groupName: 'Mediums', options: ['four', 'five', 'six'] },
{ groupName: 'Bigs', options: [
{ groupName: 'Fairly big', options: ['seven', 'eight', 'nine'] },
{ groupName: 'Really big', options: [ 'ten', 'eleven', 'twelve' ] },
'thirteen'
] },
'one hundred',
'one thousand'
]