Properly registering JavaScript and CSS in MVC 2 Editor Templates

StackOverflow https://stackoverflow.com/questions/2530623

Question

How do I properly register javascript blocks in an ASP.NET MVC 2 (RTM) Editor template?

The specific scenario I'm in is that I want to use Dynarch JSCal2 DateTimePicker for my standard datetime picker, but this question is in general to any reusable javascript package. I have my template working properly now but it has my JS and CSS includes in my master page and I would rather only include these things if I actually need them:

<link rel="stylesheet" type="text/css" href="../../Content/JSCal2-1.7/jscal2.css" />
<link rel="stylesheet" type="text/css" href="../../Content/JSCal2-1.7/border-radius.css" />
<script type="text/javascript" src="../../Scripts/JSCal2-1.7/jscal2.js"></script>
<script type="text/javascript" src="../../Scripts/JSCal2-1.7/lang/en.js"></script>

So obviously I could just put these lines into my template, but then if I have a screen that has 5 DateTimePickers, then this content would be duplicated 5 times which wouldn't be ideal. Anyways, I still want my View's Template to trigger this code being put into the <head> of my page.

While it is completely unrelated to my asking this question, I thought I'd share my template on here (so far) in case it's useful in any way:

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<DateTime>" %>

<%= Html.TextBoxFor(model => Model) %>
<input type="button" id="<%= ViewData.TemplateInfo.GetFullHtmlFieldId("cal-trigger") %>" value="..." />

<script type="text/javascript">
    var <%= ViewData.TemplateInfo.GetFullHtmlFieldId("cal") %> = Calendar.setup({
        trigger       : "<%= ViewData.TemplateInfo.GetFullHtmlFieldId(string.Empty) %>",
        inputField    : "<%= ViewData.TemplateInfo.GetFullHtmlFieldId(string.Empty) %>",
        onSelect      : function() { this.hide(); },
        showTime      : 12,
        selectionType : Calendar.SEL_SINGLE,
        dateFormat    : '%o/%e/%Y %l:%M %P'
    });
</script>
Was it helpful?

Solution

I usually add a script placeholder in my master page that is overridden by views:

Master:

<%@ Master Language="C#" Inherits="System.Web.Mvc.ViewMasterPage" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
    <title></title>
    <asp:ContentPlaceHolder ID="Styles" runat="server" />
</head>
<body>
    <asp:ContentPlaceHolder ID="MainContent" runat="server" />
    <script type="text/javascript" src="scriptAvailableToAllPages.js"></script>
    <asp:ContentPlaceHolder ID="Scripts" runat="server" />
</body>
</html>

View:

<%@ Page Language="C#" 
         MasterPageFile="~/Views/Shared/Site.Master" 
         Inherits="System.Web.Mvc.ViewPage<Ns.MyModel>" %>

<asp:Content ID="indexScripts" ContentPlaceHolderID="Scripts" runat="server">
    <script type="text/javascript" src="specific.js"></script>
</asp:Content>

<asp:Content ID="MainContent" ContentPlaceHolderID="MainContent" runat="server">
    <% using (Html.BeginForm()) { %>
        <%= Html.EditorFor(x => x.Date1) %>
        <%= Html.EditorFor(x => x.Date2) %>
        <%= Html.EditorFor(x => x.Date3) %>
        <input type="submit" value="OK" />
    <% } %>
</asp:Content>

Notice how the editor template is included for three different properties of the model but the required scripts are included only once.

OTHER TIPS

I Build a simple scritp Manage to handle this, unfortunately i haven't done it for CSS check out Asp.Net MVC Manager for javascript include and Css files . Unfortunately, it's not working proeprly for CSS, for javascript i simply just had them at the bottom of my master file, but CSS must be in the head tag, i haven't found a way yet to do that...

But using that I've been able to had script in a custom HtmlHelper, DatePicker which I use with a template DateTime.ascx.

The telerik web asset manager allows you to accomplish what you want and is open source.

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