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Re: Writing XML

From: "Anthony Jones" <Ant@------------.--->
To: NULL
Date: 6/2/2006 10:02:00 PM


"Jim" <jim1234@h...> wrote in message
news:83Zfg.1301$uP.1149@n......
> Hi folks,
>
> Could anyone help me with this one?
>
> I want to put something on my website were people can leave their email
> address to sign up for our newsletter. I've tried using JScript that
writes
> to an xml file.
>
> When you click on 'enter' you are redirected to the 'done.html'. I've set
> write permissions to the xml file but it doesn't seem to be working, can
> anyone see what I'm doing wrong?
>
>
>
> add.html
> ---------
> <html>
>   <body>
>       <form name="add_email" method="post" action="add.asp">
>       <table>
>         <tr>
>           <td><p>Enter email</p></td>
>           <td><input type="text" name="email" id="email"></td>
>           <td><input type="submit" name="submit" value="enter"></td>
>         </tr>
>       </table>
>       </form>
>   </body>
> </html>
>
>
>
> add.asp
> --------
> <%@ Language=JScript%>
>
> <%
>
>   var email = Request.Form("email")
>
>   var xmlDoc=Server.CreateObject("MICROSOFT.FreeThreadedXMLDOM");

Do you need a FreeThreaded DOM??

use MSXML2.DOMDocument.3.0

>   xmlDoc.async="false";

I'm not sure what will be coercing the string to "false" to a boolean but if
Javascript does it it will coerce to to true which is not what you intend
use:-

xmlDoc.async = false

>   xmlDoc.load(Server.MapPath("/test/email_address.xml"));
>
>   var nodeList = xmlDoc.getElementsByTagName("address");
>
>   if(nodeList.length > 0){
>
Don't understand this the XML document must have a top-level element which
looks like it will be address so length will be 1.

var addressNode = xmlDoc.documentElement

Unless your XML file is more extensive than the example given and the
address node you whish to add is elsewhere.

var addressNode = xmlDoc.documentElement.selectSingleNode("address")
If (!addressNode) addressNode =
xmlDoc.documentElement.appendChild(xmlDoc.createElement("address")

The above assumes that address node is a direct child of the root node in
your xml.

>    var parentNode = nodeList(0);

Hmm.. What node name will the parentNode have according to your code it will
already be an element called 'address'.
>    var addressNode = xmlDoc.createElement("address");
>    var emailNode = xmlDoc.createElement("email");
>
>    addressNode.text = address;

Where does the address variable come from and what is it's value.

>    emailNode.text = email;
>
>    parentNode.appendChild(addressNode);

Adding address to address here?

>    addressNode.appendChild(emailNode);
>
>    xmlDoc.save(Server.MapPath("/test/email_address.xml"));
>
>   }
>
>  Response.Redirect("done.html")
>
> %>

I suspect you wanted something like this:-

<%@ Language=JScript%>

<%

  var email = Request.Form("email")

  var xmlDoc=Server.CreateObject("MSXML2.DOMDocument.3.0");
  xmlDoc.async = false;
  xmlDoc.load(Server.MapPath("/test/email_address.xml"));

  var addressNode = xmlDoc.documentElement
  var emailNode = addressNode.appendChild(xmlDoc.createElement("email"))'

  emailNode.text = email;

  xmlDoc.save(Server.MapPath("/test/email_address.xml"));

  Response.Redirect("done.html")

%>

Of course now what do you do if two people try to submit their email address
at the same time??

A better solution in this case would be to have the each submission create
its own file in a folder.

Have your newsletter sending system consolidate the xml and eliminate
duplicates.


>
> email_address.xml
> -------------------
> <address>
>     <email>a@b...</email>
>     <email>c@d...</email>
>     <email>c@d...</email>
> </address>
>
>
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Re: Writing XML
