open-consul/ui/packages/consul-ui/app/components/child-selector/index.hbs

<div
  class="child-selector {{type}}-child-selector"
  ...attributes
>
{{yield}}
  <YieldSlot @name="create">{{yield}}</YieldSlot>
  <label class="type-text">
    <span><YieldSlot @name="label">{{yield}}</YieldSlot></span>
    {{#if isOpen}}
      <DataSource
        @src={{concat '/' (or nspace 'default') '/' dc '/' (pluralize type)}}
        @onchange={{action (mut allOptions) value="data"}}
      />
    {{/if}}
    <DataCollection
      @type={{type}}
      @sort='Name:asc'
      @filters={{hash
        searchproperties=(array 'Name')
      }}
      @items={{options}}
    as |collection|>
      <PowerSelect
        @searchEnabled={{true}}
        @search={{action collection.search}}
        @options={{sort-by 'Name:asc' options}}
        @loadingMessage="Loading..."
        @searchMessage="No possible options"
        @searchPlaceholder={{placeholder}}
        @onOpen={{action (mut isOpen) true}}
        @onClose={{action (mut isOpen) false}}
        @onChange={{action "change" "items[]" items}}
      as |item|>
        <YieldSlot @name="option" @params={{block-params item}}>{{yield}}</YieldSlot>
      </PowerSelect>
    </DataCollection>
  </label>
{{#if (gt items.length 0)}}
  <YieldSlot @name="set">{{yield}}</YieldSlot>
{{else}}

{{/if}}
</div>