How to Handle Server Redirects in jQuery Ajax Calls Without Unexpected Behavior?

Avoiding the Direct Eye Contact: Managing Redirects in jQuery Ajax Calls

When executing an Ajax call with jQuery, encountering a redirect directive from the server can lead to unintended consequences. Instead of the expected replacement of a div element, you may find yourself with the user involuntarily staring at a login page.

The solution to this predicament, as suggested in an insightful post, involves tweaking the HTTP status code to be 278. This prevents the browser from automatically handling redirects. However, for a more robust approach, consider utilizing JSON.

In this scenario, regardless of the response, the Ajax call maintains a status code of 200. The response body contains a JSON object crafted on the server. This object allows the client-side JavaScript to determine the appropriate action based on its contents.

Implementing this approach mimics the following logic:

$.ajax({
    type: "POST",
    url: reqUrl,
    data: reqBody,
    dataType: "json",
    success: function(data, textStatus) {
        if (data.redirect) {
            window.location.href = data.redirect;
        } else {
            $("#myform").replaceWith(data.form);
        }
    }
});

The data object, composed on the server, comprises two key components: data.redirect and data.form. This method offers greater flexibility and clarity in handling redirect requests during Ajax calls.

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