app/templates/head.hbs
<meta property="og:site_name" content="{{this.model.siteName}}"/>
{{#if this.model.title}}
<meta property="og:title" content="{{this.model.title}}" />
{{/if}}
{{#if this.model.description}}
<meta property="og:description" content="{{this.model.description}}" />
{{/if}}
{{#if this.model.image}}
<meta property="og:image" content="{{this.model.image}}" />
{{/if}}
{{#if this.model.schemaOrg}}
<script type="application/ld+json">
</script>
{{/if}}