Custom Relative Path In Asp.Net Core MVC

Question

Is there any possibility to have a custom relative path same as example at below:

In Razor:

<script src="%/scripts/theme.js" type="text/javascript"></script>

And Result:

<script src="/themes/default/scripts/theme.js" type="text/javascript"></script>

Define New PATH style same as %/ or */ or $/

Attention: I KNOW ABOUT ~/ (default relative path). I'm talking about how can I Define NEW ONE?

can you try this <script type="text/javascript" src='@Url.Content("~/scripts/theme.js")'></script> — hasan
– hasan, Commented Jun 11, 2017 at 9:56
No. Please read what I said there. I said CUSTOM this is not CUSTOM. Define new one. Of course i KNOW about ~/. something new so i be able to define same as %/ or ^/ or */ ..... — Omid Mafakher
– Omid Mafakher, Commented Jun 11, 2017 at 12:18

Omid Mafakher · Accepted Answer · 2017-06-11 21:19:21Z

Finally I found the solution. Please take a looks how Microsoft had implement it at link below: https://github.com/aspnet/Mvc/blob/1c4b0fcdf38320b2f02c0bb7c31df5bd391ace07/src/Microsoft.AspNetCore.Mvc.Razor/TagHelpers/UrlResolutionTagHelper.cs#L47

I had take a copy of this class and I renamed that to this:

[HtmlTargetElement("link", Attributes = "[href^='%/']", TagStructure = TagStructure.WithoutEndTag)]
[HtmlTargetElement("script", Attributes = "[src^='%/']")]
....
public class ThemeUrlResolutionTagHelper : TagHelper
{
   /*Implement tag helper here*/
}

And before creating trimmed string I insert my Theme URL

url = url.Remove(start, 2).Insert(start, $"~/themes/{Theme.Key}/");
var trimmedUrl = CreateTrimmedString(url, start);

And I changed the ~ to % in FindRelativeStart method

// Before doing more work, ensure that the URL we're looking at is app-relative.
if (url[start] != '%' || url[start + 1] != '/')
{
    return -1;
}

And Done!

JK. · Accepted Answer · 2017-06-11 05:09:15Z

1

You need to use ~ (tilde). There is no % operator for paths:

 <script src="~/scripts/theme.js" type="text/javascript"></script>

answered Jun 11, 2017 at 5:09

JK.

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1 Comment

Omid Mafakher Over a year ago

please take a looks again to example. i said CUSTOM. ~/ it's return you wwwroot and i want to have a custom one. % it was a example to have a new CUSTOM one. I want to point to the specific PATH.

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