Hello,

Template to attach image file in your website form should contain following code:

 <form action="/save/my/profile" method="post" enctype="multipart/form-data">

  <input class="form-control" id="profile_image" type="file" name="profile_image" accept=".jpeg,.jpg,.png,"/>

 </form>

 Python code to save submitted image to res.partner:

 @http.route('/save/my/profile', type='http', auth="public", website=True)

    def save_image(self, **kw):

     datas = kw.get('profile_image').stream.getvalue()

     #  store image in base64 format to image field of partner

     partner.sudo().write({'image': base64.encodestring(datas)})

Note: binary field for image should be defined with attachment=True

This image file will be stored inside the ir.attachment model (ir_attachment table).This table contains following values to establish the link to the original record:

    name: name of the binary field, e.g. image

    res_field: name of the binary field, e.g. image

    res_model: model containing the field, e.g. res.partner

    res_id: ID of the record the binary field belongs to

    type: 'binary'

    datas: virtual field with the contents of the binary field, which is actually stored on disk

Hope this will help you!

Thanks,