How do I register a custom function?

[jakejscott]

No description provided.

[jakejscott]

I worked it out 👍

var script = new ScriptObject();
script.Import(model);
script.SetValue("custom", ScriptObject.From(typeof(CustomFunctions)), true);

TemplateContext context = new TemplateContext();
context.PushGlobal(script);

Template template = Template.Parse(html);
template.Render(context);
context.PopGlobal();

string rendered = context.Output.ToString();

[xoofx]

your solution imports all public functions from CustomFunctions into an object and associate it to the custom variable (so it is more import multiple functions!)

You may also use ScriptObject.Import(name, delegate) (or use a new Func<...>(function) as a delegate) in case you want to import a specific function or a this/closure function.

[jakejscott]

Which looks like this if anyone struggles with Func syntax like I do :)

Func<double, string> currency = value => value.ToString("C");
script.Import("currency", currency);

// Or like this.
script.Import("currency", (Func<double, string>)(value => value.ToString("C")));

And in your template

<p>
Subtotal: {{ order.sub_total_price | currency }} {{ order.currency }} <br />
</p>