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RE: RE: I have the XSLT, now need to make it usable asuser-inp ut form?

2003-04-22 11:21:09
-----Original Message-----
From:     "Kathy Burke" <Kathy_Burke(_at_)Jabil(_dot_)com>

I wanted to ... save the entire XML instance to a field in a 
database, then call upon that info using
XSLT etc.


Exactly how it's done depends on the nature of the program receiving the 
content of the HTML form. That is to say, the specifics of the server-side code 
depend on the HTTP server and the database. Are you using IIS or Apache, Java 
Server Pages, or ActiveServer Pages, or Perl CGI scripts? The answers to those 
questions will give you the particulars, but in general, here's how I handle it.

I place user input controls on the HTML page to permit the user to add and 
modify data. These I don't put in an HTML form, because I'm not going to send 
those values directly to the server. Instead, I create a form containing a 
single text input control and set the form's action attribute to the server 
handler and the form's style.display property to "none".

I write a JavaScript which captures the user's input and constructs an XML 
string (a well-formed, serialized document, if you will). When whatever I set 
up to cause the update to the database occurs (usually a button click), I call 
the JavaScript function that assembles the XML from the user input controls, 
set the value of the hidden text input to the output of that function, and 
submit the form to the server.

At the server you can perform an insert or update to your database and store 
the whole string in a single column. If you later want to query the document, 
you can retrieve the string and using the server-side programming objects 
available to you, create an XML document object from the string and query it 
with XPath.

-- 
Charles Knell
cknell(_at_)onebox(_dot_)com - email


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