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DEVELOPING COLDFUSION 9 APPLICATIONS
The CFML Programming Language
Las t upda te d 8/5/2010
Example file addemployee.cfm
The following file is an example of a custom tag used to add employees. Employee information is passed through the
employee structure (the
empinfo
attribute). For databases that do not support automatic key generation, also add the
Emp_ID.
Code Description
<cfparam name="Form.firstname" default="">
<cfparam name="Form.lastname" default="">
<cfparam name="Form.email" default="">
<cfparam name="Form.phone" default="">
<cfparam name="Form.department" default="">
Set default values of all form fields so that they exist the first
time this page is displayed and can be tested.
<cfif #Form.firstname# eq "">
<p>Please fill out the form.</p>
Test the value of the firstname field. This field is required. The
test is False the first time the page displays.
If no data exists in the Form.firstname variable, display a
message requesting the user to fill the form.
<cfelse>
<cfoutput>
<cfscript>
employee=StructNew();
employee.firstname = Form.firstname;
employee.lastname = Form.lastname;
employee.email = Form.email;
employee.phone = Form.phone;
employee.department = Form.department;
</cfscript>
<!--- Display results of creating the structure. --->
First name is #StructFind(employee, "firstname")#<br>
Last name is #StructFind(employee, "lastname")#<br>
EMail is #StructFind(employee, "email")#<br>
Phone is #StructFind(employee, "phone")#<br>
Department is #StructFind(employee, "department")#<br>
</cfoutput>
If Form.firstname contains text, the user submitted the form.
Use CFScript to create a structure named employee and fill it
with the form field data.
Then display the contents of the structure.
<cf_addemployee empinfo="#employee#">
</cfif>
Call the
cf_addemployee
custom tag and pass it a copy of the
employee structure in the empinfo attribute.
The duplicate function ensures that the custom tag gets a
copy of the employee structure, not the original. Although this
is not necessary in this example, it is good practice because it
prevents the custom tag from modifying the calling contents of
the structure in the calling page.
<form action="newemployee.cfm" method="Post">
First Name:&nbsp;
<input name="firstname" type="text" hspace="30"
maxlength="30"><br>
Last Name:&nbsp;
<input name="lastname" type="text" hspace="30"
maxlength="30"><br>
EMail:&nbsp;
<input name="email" type="text" hspace="30"
maxlength="30"><br>
Phone:&nbsp;
<input name="phone" type="text" hspace="20"
maxlength="20"><br>
Department:&nbsp;
<input name="department" type="text" hspace="30"
maxlength="30"><br>
<input type="Submit" value="OK">
</form>
The data form. When the user clicks OK, the form posts the data
to this ColdFusion page.