Populate a Razor Section From a Partial

The way I dealt with this is to write a couple extension methods to the HtmlHelper class. That allows partials views to say that they require a script, and then in the layout view that writes the tag I call to my helper method to emit the required scripts

Here are the helper methods:

public static string RequireScript(this HtmlHelper html, string path, int priority = 1){    var requiredScripts = HttpContext.Current.Items["RequiredScripts"] as List<ResourceInclude>;    if (requiredScripts == null) HttpContext.Current.Items["RequiredScripts"] = requiredScripts = new List<ResourceInclude>();    if (!requiredScripts.Any(i => i.Path == path)) requiredScripts.Add(new ResourceInclude() { Path = path, Priority = priority });    return null;}public static HtmlString EmitRequiredScripts(this HtmlHelper html){    var requiredScripts = HttpContext.Current.Items["RequiredScripts"] as List<ResourceInclude>;    if (requiredScripts == null) return null;    StringBuilder sb = new StringBuilder();    foreach (var item in requiredScripts.OrderByDescending(i => i.Priority))    {        sb.AppendFormat("<script src=\"{0}\" type=\"text/javascript\"></script>\n", item.Path);    }    return new HtmlString(sb.ToString());}public class ResourceInclude{    public string Path { get; set; }    public int Priority { get; set; }}

Once you have that in place your partial view just needs to call @Html.RequireScript("/Path/To/Script").

And in the layout view's head section you call @Html.EmitRequiredScripts().

An added bonus of this is that it allows you to weed out duplicate script requests. If you have multiple views/partial views that need a given script you can safely assume that you will only output it once

Partial views cannot participate in their parent views' sections.

You could have a second partial that is only in charge of injecting the necessary javascript. Place several scripts in there around @if blocks, if you want:

@model string@if(Model == "bla") {    <script type="text/javascript">...</script>}@else if(Model == "bli") {    <script type="text/javascript">...</script>}

This could obviously be cleaned up a bit, but then, in the Scripts section of your view:

@section Scripts{    @Html.Partial("_Scripts", "ScriptName_For_Partial1")}

Again, it might not win a beauty prize but it will work.