🐛 preview_pdf not showing updated PDF

[ollyhensby]

Describe the bug
If a PDF file is changed whilst in a session, the new PDF is not shown. The old PDF must be cached in the browser in some way.

Expected behavior
I expect the new PDF to be shown after closing and re-opening the preview display.

Potential Solution
Convert PDF into bytes and load use base64.

from base64 import b64encode
def preview_pdf(path: pathlib.Path):
    if not isinstance(path, pathlib.PurePath):
        path = pathlib.Path(path)

    with open(path, "rb") as pdf_file:
        content_b64 = b64encode(pdf_file.read()).decode()

    return IFrame(src=f"data:application/pdf;base64,{content_b64}", width=1000, height=1000)