Send form data to a pdfkit iframe document - html

Question

I would like to retrieve the values of a form and send them to a pdfkit document generated in back end.
For the moment, I only have created a simple document by a "get" route :
router.get(
"/",
authCheck,
asyncHandler(async (req: express.Request, res: express.Response) => {
const doc = new PDFDocument();
let filename = "toto";
filename = encodeURIComponent(filename) + ".pdf";
res.setHeader(
"Content-disposition",
'attachment; filename="' + filename + '"'
);
res.setHeader("Content-type", "application/pdf");
const content = "contenu";
doc.y = 300;
doc.text(content, 50, 50);
doc.pipe(res);
doc.end();
})
);
Here is the code to retrieve the created document :
<iframe className="preview-pdf__container" src={pdfContent} />
How do I send my form data and get it back into the document? With a POST?

Answer 1

This is how I was able to get data from my form into my server then export it to different files with in my server using node.js if it helps. I am not entirely sure on how to get it back out of your server into an iframe though.
HTML:
<div class="wrapper">
<form action="/login" method="POST">
<label id="email-label">Email</label>
<div class="textarea" id="email">
<input type="email" name="email" id="authentactor-email" value="" required>
</div>
<label>Password</label>
<div class="textarea" id="password">
<input type="password" name="password" id="authentactor-password" value="" required>
</div>
<div id="button-wrapper">
<button type="submit" id="button">Login</button>
</div>
</form>
</div>
node.js
//Allows you to Export form data from index.js
app.post('/login');