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Discover how to overcome URL length limitations in AngularJS by switching from GET to POST to send larger datasets effectively.
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How to Send a Bit Larger Set of Data with $http.get in AngularJS

If you're working with AngularJS and attempting to send a larger set of data using the $http.get method, you might have encountered an error stating "url characters exceeded." This is a common issue due to browser limitations on URL length, which can vary across different browsers. In this post, we’ll walk through the problem and provide a clear solution by demonstrating how to switch to the POST method to send data in the body of the request rather than as URL parameters.

Understanding the Problem

When you use $http.get to send data, the data is typically appended to the URL as query parameters. With larger datasets, this can quickly exceed the maximum URL length that various browsers can handle (for example, Internet Explorer has a limit of around 2000 characters).

Example Scenario

Consider the following example where you want to send a list of regions:

[[See Video to Reveal this Text or Code Snippet]]

Here, you are sending the sendingRegions as a parameter in the URL. If this list gets too large, you'll face the notorious limitation.

The Recommended Solution

To send larger datasets, the best approach is to switch from a GET request to a POST request, where you can send your data in the body of the request. This avoids the URL length limitation completely.

Step-by-Step Guide

Update AngularJS Code to Use POST

Modify your $http.get call to $http.post. Here’s how you can do it:

[[See Video to Reveal this Text or Code Snippet]]

In this new call, we are sending sendingRegions as the request body rather than as URL parameters.

Adjust Your ASP.NET MVC Method

Now, you need to adjust your server-side method to handle the POST request. Update your method to accept data from the body instead of the URI:

[[See Video to Reveal this Text or Code Snippet]]

By adding the [FromBody] attribute, you specify that the regions parameter should be sourced from the body of the request.

Conclusion

By transitioning to a POST request, you're able to confidently send larger datasets without confronting URL length limitations. This is a simple yet effective approach to enhance your API interactions in AngularJS while ensuring data integrity and functionality.

When working with AngularJS and ASP.NET MVC, keeping these practices in mind will help you create a smoother and more efficient communication between your client and server.

Feel free to leave any comments or questions below about this process!