Content Validation

A simple way of validation is the required attribute in some input components. The text area must not empty if the submit button is pressed. Otherwise, an error message is displayed.

<tc:textarea label="Text Area" required="true"/>Text AreaSubmit

The length of a value can be validated by the <f:validateLength/> tag. Length means the number of characters. In this example, the given string must have at least two characters and maximal four characters.

Please note, an empty string will not be validated.

<tc:in label="Input"> <f:validateLength minimum="2" maximum="4"/> </tc:in>TextSubmit

The range of an integer number can be validated via <f:validateLongRange/>. In the following input field numbers from 3 to 77,777 can be added.

<tc:in label="Number" markup="number"> <f:validateLongRange minimum="3" maximum="77777"/> </tc:in>IntegerSubmit

The range of a floating point number can be validated via <f:validateDoubleRange/>. In the following input field numbers from 0.01 to 999.99 can be added.

<tc:in label="Number" markup="number"> <f:validateLongRange minimum="0.01" maximum="999.99"/> </tc:in>Floating PointSubmit

A value can be validated against a regex patter via the <f:validateRegex/> tag.

<tc:in label="Letter & Number" > <f:validateRegex pattern="[A-Za-z][0-9]"/> </tc:in>

The value in the field must be a word character combined with a number. For example 'T3'.

Letter & NumberSubmit

It's also possible to add custom validators using the validator attribute of an input component. In this case, only the string 'Tobago' (uppercase/lowercase ignored) is accepted.

TextSubmit

A validator check the password against the confirmation field. To get access to the confirmation field from the validator a binding with the binding attribute and the <f:attribute/> tag is created.

<tc:in label="Password" validator="#{validationController.passwordValidator}"> <f:attribute name="confirmationField" value="#{confirmBinding}"/> </tc:in> <tc:in label="Confirmation" binding="#{confirmBinding}"/>PasswordConfirmationSubmit