Checking that Mandatory Fields have been populated in a Form

[MaKSiNG]

Hi All,

I have done a search but could not find any useful results.

I have used an XSLT to post the contents of a form to a Java Component for further processing.

The form contains fields which are mandatory for the user to fill in. My question is how do I do this mandatory field checking in the XSLT? Can someone point me to an example of how this is done?


Thx,
MaKS

 

[CubeE101]

you set up a javascript function to validate the form before posting, when submit is pressed...

XSL is used for translation... The only logic it contains is whether or not to display an element...



PROGRAMMER: Red-eyed, mumbling mammal capable of conversing with inanimate objects.

 

[chiph]

You would validate your contents (in XML form) against an XSD file, which defines how the XML should look, including specifying a minimum length on an element. A simple example is this:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="[URL unfurl="true"]http://www.w3.org/2001/XMLSchema"[/URL] elementFormDefault="qualified" attributeFormDefault="unqualified">
	<xs:element name="root">
		<xs:complexType>
			<xs:sequence>
				<xs:element name="FirstName">
					<xs:simpleType>
						<xs:restriction base="xs:string">
							<xs:minLength value="1"/>
							<xs:maxLength value="20"/>
						</xs:restriction>
					</xs:simpleType>
				</xs:element>
				<xs:element name="MiddleName" minOccurs="0">
					<xs:simpleType>
						<xs:restriction base="xs:string">
							<xs:minLength value="1"/>
							<xs:maxLength value="20"/>
						</xs:restriction>
					</xs:simpleType>
				</xs:element>
				<xs:element name="LastName">
					<xs:simpleType>
						<xs:restriction base="xs:string">
							<xs:minLength value="1"/>
							<xs:maxLength value="50"/>
						</xs:restriction>
					</xs:simpleType>
				</xs:element>
			</xs:sequence>
		</xs:complexType>
	</xs:element>
</xs:schema>

This says that FirstName is a string, with a minimum length of 1, and a maximum length of 20. This makes the element required, as well as requiring a value for the element.

MiddleName is an optional element (meaning it can be missing from the document). If it's supplied, it's minLength attribute says it must contain a value.

LastName is just like FirstName, but with a bigger content (50 characters).

Chip H.

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