Adobe 38040334 Extending Dreamweaver - Page 277

<updatePatterns&gt, <updatePattern&gt

Page 277 highlights

DREAMWEAVER CS3 271 Extending Dreamweaver Description This optional advanced feature lets you update the participant precisely. Without this tag, the participant is updated automatically by replacing the entire participant text each time. If you specify an updatePatterns tag, it must contain specific patterns to find and replace each parameter within the participant. This tag is beneficial if the user edits the participant text. It performs precise updates only to the parts of the text that need changing. Parent implementation Type Block tag. Required No. Description This tag is a specific type of regular expression that lets you update participant text precisely. There should be at least one update pattern definition for every unique parameter that is declared in the insertion text (of the form @@paramName@@). Parent updatePatterns Type Block tag. Required Yes (at least one, if you declare the updatePatterns tag). 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: There are two parameters, rs and col. To update this text after you insert it on the page, you need two update pattern definitions:

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DREAMWEAVER CS3
Extending Dreamweaver
271
<updatePatterns>
Description
This optional advanced feature lets you update the participant precisely. Without this tag, the participant is updated
automatically by replacing the entire participant text each time. If you specify an
updatePatterns
tag, it must
contain specific patterns to find and replace each parameter within the participant.
This tag is beneficial if the user edits the participant text. It performs precise updates only to the parts of the text that
need changing.
Parent
implementation
Type
Block tag.
Required
No.
<updatePattern>
Description
This tag is a specific type of regular expression that lets you update participant text precisely. There should be at least
one update pattern definition for every unique parameter that is declared in the insertion text (of the form
@@paramName@@
).
Parent
updatePatterns
Type
Block tag.
Required
Yes (at least one, if you declare the
updatePatterns
tag).
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:
<insertText location="afterSelection">
<![CDATA[<%= @@rs@@.Field.Items("@@col@@") %>]]>
</insertText>
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: