ASP .Core MVC configure application root url
Question
I have two ASP .Core MVC applications that are hosted under the same url.
I've managed to separate them with Nginx so that a certain path goes to app-2 , while the rest goes to app-1 :
http://host -> app-1
http://host/setup -> app-2
My problem comes when the user connects to app-2 , as the application still thinks it's app-root is http://host .
This leads to the client encountering a 404 when for example style sheets are downloaded, since app-2.css exists under http://host/setup/css but the application searches in http://host/css .
The "include"-lines in the .cshtml file in app-2 look like this:
<link rel="stylesheet" type="text/css" href="@Url.Content("~/css/app-2.css")" asp-append-version="true" />
Is there some way of "overriding" or telling app-2 that ~ should refer to <host>/setup/css/ instead of <host>/css/ ?
I really don't want to hardcode it in case the url changes at some point.
2 answers
solution1
0 2021-10-19 11:45:45
After many hours of searching I found no way of altering the application root for the entire webserver.
What I ended up doing instead was create class PathHelper with options and added it to Startup.cs :
class PathHelper
{
public PathHelper(IOptions<PathHelperOptions> opt)
{
Path = opt.Path;
if (Path.StartsWith('/'))
{
Path = Path[1..];
}
if (!Path.EndsWith('/'))
{
Path = Path + '/';
}
}
public string Path { get; }
}
class PathHelperOptions
{
public string Path { get; set; }
}
# Startup.cs
public void ConfigureServices(IServiceCollection services)
{
services
.AddScoped<PathHelper>()
.Configure<PathHelperOptions>(opt =>
{
opt.Path = this.configuration.GetSection("URL_SUFFIX");
});
[...]
}
I then used it in the .cshtml files like this:
@inject PathHelper helper
<link rel="stylesheet" type="text/css" href="@Url.Content(helper.Path + "css/app-2.css")" asp-append-version="true" />
solution2
0 2021-10-19 11:57:37
I think the easiest way is to include the base tag in pages coming from 'app-2'.
Try it like this:
<html>
<head>
<base href="http://host/setup">
</head>
Now your relative links are sent to 'app-2'.
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