Ecommerce Shopify WordPress Discussion

how can I catch a redirect and downloading a generated file instead?

I am creating a plugin which generates a CSV file and allows an admin to download it. I have a working function which generates the CSV data, but I'm having trouble making it downloadable. I have tried the solution from this question but it doesn't seem to be catching the redirect. Here is the element that causes the redirect: <form method="GET" action="data.csv"> <input type="submit" class="button button-primary" value="Download CSV"></input> </form> This is what I have so far for catching the redirect: function download_redirect() { if ($_SERVER['REQUEST_URI']=='/wp-admin/data.csv?') { $csv_data = generate_csv(); header('Content-Disposition: attachment; filename="data.csv"'); header('Content-Type: text/csv'); header('Content-Length: ' . strlen($csv_data)); header('Connection: close'); echo $csv_data; exit(); } } add_action('template_redirect','download_redirect'); the function generate_csv() returns the contents of the CSV file as a string. What am I missing?
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