app/templates/layouts/alert.hbs
<div class="ember-dialog-dialog {{className}} {{if substrate "substrate"}}">
<div class="dialog-content" tabindex="-1">
<div class="dialog-header">
<button type="button" class="dialog-close" {{action "accept"}}></button>
<div class="dialog-title">{{title}}</div>
</div>
{{#if templateName}}
<div class="dialog-body">{{partial templateName}}</div>
{{else}}
{{component "dialog-body" layout=template contextObject=contextObject context=context class="dialog-body"}}
{{/if}}
<div class="dialog-footer">
<button class="btn btn__accept" type="button" {{action "accept"}}>OK</button>
</div>
</div>
</div>