When redirecting from an IFRAME, why is the Django login lost?

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There are a few possible reasons why the Django login may be lost when redirecting from an IFRAME:

1. Cross-site scripting (XSS) protection: Modern browsers have built-in security measures to prevent cross-site scripting attacks. If the redirect URL is on a different domain than the original page, the browser may block the redirect to protect against XSS attacks.

2. Same-origin policy: The same-origin policy prevents web pages from accessing content from another domain. If the redirect URL is on a different domain, the browser may block the redirect to enforce the same-origin policy.

3. Cookie settings: Django uses cookies to store session information for authenticated users. If the cookies are not set properly, the user’s login information may not be preserved during the redirect.

To resolve the issue, you can try the following steps:

1. Use a same-origin redirect: Instead of redirecting to a URL on a different domain, try redirecting to a URL on the same domain as the original page. This will bypass XSS protection and same-origin policy restrictions.

2. Set the cross-domain cookie policy: If you need to redirect to a URL on a different domain, ensure that the cookies are set to allow cross-domain access. This can be done by setting the cookie policy in Django settings.

3. Use JSONP to communicate between pages: If you need to exchange data between pages on different domains, you can use JSONP (JSON with padding) to send data in a way that bypasses the same-origin policy.