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HelpersIsSectionDefined Method
Returns a value to be used within an #if subexpression whether a section name has been defined.

Namespace: HandlebarsDotNet.Mvc
Assembly: HandlebarsDotNet.Mvc (in HandlebarsDotNet.Mvc.dll) Version: 1.0.0-beta
Syntax
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public static void IsSectionDefined(
	TextWriter writer,
	Object context,
	params Object[] arguments
)

Parameters

writer
Type: System.IOTextWriter
The TextWriter provided by HandlebarsDotNet
context
Type: SystemObject
The context (model) provided by HandlebarsDotNet
arguments
Type: SystemObject
The arguments from the view, provided by HandlebarsDotNet
Remarks
This helper is among the ones registered if RegisterSectionsHelpers is called. If so, it is registered as issectiondefined but you can choose your own name for this:
C#
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var hbsve = new HandlebarsViewEngine();
hbsve.RegisterHelper("issectiondefined", HandlebarsDotNet.Mvc.Helpers.IsSectionDefined);
It works like Razor's IsSectionDefined method. For a nice write-up, see https://weblogs.asp.net/scottgu/asp-net-mvc-3-layouts-and-sections-with-razor.

Usage

{{#if (issectiondefined [name])}} ... {{/if}}

Arguments

name
string (required) - The name of the section.

Description

This helper checks if a named section has been defined, and returns a truthy value if so. That value can be used in an {{#if}}-test to for example render the section or default content as in the example below.
Examples
view.hbs
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{{!< default}}
{{#definesection "sidebar"}}
    For more info, see<br />
    <a href="link1.html">Link 1</a><br />
    <a href="link2.html">Link 2</a><br />
{{/definesection}}
~/Views/_Layouts/default.hbs
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{{#if (issectiondefined "sidebar")}}
    <div id="sidebar">
        {{{rendersection "sidebar"}}}
    </div>
{{else}}
    <p>Default sidebar content...</p>
{{/if}}
See Also