How to download any binary file on click from Odoo website?

form.py

# -*- coding: utf-8 -*-

from odoo import _
from odoo import http
from odoo.http import Controller, request, route


class OnlineRequests(Controller):

    @http.route('/web/download/binary/<string:model>/<int:res_id>/<string:field>/<string:filename>', type='http', auth="public")
    def download_document(self, model, field, res_id, filename=None, **kw):

        response = None
        status, headers, content = request.env['ir.http'].sudo().binary_content(
            model=model,
            id=res_id,
            field=field,
            default_mimetype='application/octet-stream',
        )

        if status == 200:
            content_base64 = base64.b64decode(content)
            headers.append(('Content-Length', len(content_base64)))
            response = request.make_response(content_base64, headers)

        return response