How do you manage URL modifications for MVC applications deployed to subfolders?

Understanding URL Modification for Application Subfolders

In developing an MVC application that is deployed to a subfolder, it's essential to accommodate the change in the base URL. This ensures that JavaScript references and URLs function correctly in both the local and deployed environments.

Solution to Determine Application Root

To determine the root URL and modify JavaScript accordingly, there are two approaches:

Simple Approach:

• Utilize the leading '/' character in your JavaScript URL.
• For example, when referencing the 'JobsController' from an MVC application deployed to the 'Jobs' subfolder, use the URL "/jobs/GetIndex" instead of "http://site/jobs/GetIndex".

Comprehensive Approach:

• Leverage Razor view's Url.Content helper method to generate the app base URL.
• Instantiate a JavaScript namespace object and assign the app base URL to a variable.
• Use the assigned variable in JavaScript to construct other URLs.

Example using Razor View and JavaScript:

// Razor View (Layout file or specific view)
<script>
    var myApp = myApp || {}; // Create or extend the myApp namespace
    myApp.Urls = myApp.Urls || {}; // Create or extend the Urls object within myApp
    myApp.Urls.baseUrl = '@Url.Content("~")'; // Assign the app base URL to the baseUrl property
    myApp.Urls.jobIndexUrl = '@Url.Action("GetIndex","jobs")'; // Assign the specific action URL to the jobIndexUrl property
</script>

// PageSpecificExternalJsFile.js
var urlToJobIndex= myApp.Urls.jobIndexUrl; // Access the specific action URL
var urlToJobIndex2= myApp.Urls.baseUrl+"jobs/GetIndex"; // Construct a relative URL using the app base URL
</script>

AngularJS Approach:

For AngularJS projects, utilize the Angular value provider to inject the application root URL into your controllers, services, or directives, ensuring the availability of correct relative URLs.

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