Contextual rendering

Contextual rendering uses the {{render}} helper to specify a default template for a given context.

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{{render this [/core/promo/Promo.hbs]="/core/promo/FancyPromo.hbs"}}

In the above scenario FancyPromo.hbs must be registered as a style variation (see Style variations) in a _config file:

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{
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  "styles": {
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    "/core/promo/Promo.hbs": {
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      "templates": [
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        {
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          "displayName": "Fancy Promo",
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          "example": "/core/promo/FancyPromo.json"
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        }
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      ]
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    }
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  }
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}

Editors can override the default template for a given context.