MACROMEDIA COLDFUSION MX 61-DEVELOPING COLDFUSION MX, Develop Manual, Page: 590 / 860

590 Chapter 27: Building Dynamic Forms
Structuring tree controls
Tree controls built with
cftree
can be very complex. Knowing how to specify the relationship
between multiple
cftreeitem
entries helps you handle the most complex of
cftree
constructs.
Creating a one-level tree control
The following example consists of a single root and a number of individual items:
<cfquery name="deptquery" datasource="CompanyInfo">
SELECT Dept_ID, Fir ' ' + LastName
AS FullName
FROM Employee
ORDER BY Dept_ID
</cfquery>
<cfform name="form1" action="submit.cfm">
<cftree name="tree1">
<cftreeitem value="FullName"
query="deptquery"
queryasroot="Department">
</cftree>
<br>
<input type="submit" value="Submit">
</cfform>
Creating a multilevel tree control
The following figure shows an example of a multilevel tree:
When populating a
cftree
, you create the multilevel structure of the tree by specifying a parent
for each
cftreeitem
in the tree. The
parent
attribute of
cftreeitem
allows your
cftree
to
show relationships between elements in the tree.
In this example, every
cftreeitem
, except the top level Divisions , specifies a parent. For example,
the
cftreeitem
Development specifies a parent of Divisions .