Adobe Extending Dreamweaver CS4 - Manual (Page 281)

275 EXTENDING DREAMWEAVER CS4
Server behaviors
Values
The value is a regular expression that finds a parameter between two parenthetical subexpressions, in the form /(pre-
pattern)parameter-pattern(post-pattern)/. You need to define at least one update pattern for each unique
@@paramName@@ in the insertion text. The following example shows how your insertion text might look:
A particular instance of the insertion text on a page might look like the following example:
<%= RS1.Field.Items("author_id") %>
There are two parameters, rs and col . To update this text after you insert it on the page, you need two update pattern
definitions:
/(\b)\w+(\.Field\.Items)/
/(\bItems\(")\w+("\))/
The literal parentheses, as well as other special regular expression characters, are escaped by preceding them with a
backslash (\). The middle expression, defined as
\w+ , is updated with the latest value that passed in for parameters rs
and col , respectively. The values RS1 and author_id can be precisely updated with new values.
Multiple occurrences of the same pattern can be updated simultaneously by using the regular expression global flag g
after the closing slash (such as /pattern/g).
If the participant text is long and complex, you might need multiple patterns to update a single parameter, as shown
in the following example:
<% ...
Recordset1.CursorType = 0;
Recordset1.CursorLocation = 2;
Recordset1.LockType = 3;
%>
To update the recordset name in all three positions, you need three update patterns for a single parameter, as shown
in the following example:
/(\b)\w+(\.CursorType)/
/(\b)\w+(\.CursorLocation)/
/(\b)\w+(\.LockType)/
Now you can pass in a new value for the recordset, and it is precisely updated in three locations.
attributes
The following items are valid attributes of the updatePattern tag.