f

Tag viewParam

Component Information 
InfoValue
Component Typejakarta.faces.Parameter
Handler ClassNone
Renderer TypeNone
DescriptionNone
Attributes 
NameRequiredTypeDescription
bindingfalsejakarta.el.ValueExpression
(must evaluate to jakarta.faces.component.UIComponent)

The ValueExpression linking this component to a property in a backing bean.

converterfalsejakarta.el.ValueExpression
(must evaluate to jakarta.faces.convert.Converter)

Converter instance registered with this component.

converterMessagefalsejakarta.el.ValueExpression
(must evaluate to java.lang.String)

A ValueExpression enabled attribute that, if present, will be used as the text of the converter message, replacing any message that comes from the converter.

forfalsejakarta.el.ValueExpression
(must evaluate to java.lang.String)

If present, this attribute refers to the value of one of the exposed attached objects within the composite component inside of which this tag is nested.

idfalsejakarta.el.ValueExpression
(must evaluate to java.lang.String)

The component identifier for this component. This value must be unique within the closest parent component that is a naming container.

nametruejakarta.el.ValueExpression
(must evaluate to java.lang.String)

The name of the request parameter from which the value for this component is retrieved on an initial request or to override the stored value on a postback.

requiredfalsejakarta.el.ValueExpression
(must evaluate to boolean)

Flag indicating that the user is required to provide a submitted value for this input component.

requiredMessagefalsejakarta.el.ValueExpression
(must evaluate to java.lang.String)

A ValueExpression enabled attribute that, if present, will be used as the text of the validation message for the "required" facility, if the "required" facility is used.

validatorfalsejakarta.el.MethodExpression
(signature must match void validate(jakarta.faces.context.FacesContext, jakarta.faces.component.UIComponent, java.lang.Object) )

MethodExpression representing a validator method that will be called during Process Validations to perform correctness checks on the value of this component. The expression must evaluate to a public method that takes FacesContext, UIComponent, and Object parameters, with a return type of void.

validatorMessagefalsejakarta.el.ValueExpression
(must evaluate to java.lang.String)

A ValueExpression enabled attribute that, if present, will be used as the text of the validator message, replacing any message that comes from the validator.

valuefalsejakarta.el.ValueExpression
(must evaluate to java.lang.Object)

A ValueExpression to which the value of the request parameter, as determined by the name attribute, is bound. The resolved value of this expression is used when encoding the view parameter into a bookmarkable link or redirect URL with view parameter encoding enabled. If this attribute is omitted, the value of the request parameter will instead be the local value of the UIViewParameter.

valueChangeListenerfalsejakarta.el.MethodExpression
(signature must match void valueChange(jakarta.faces.event.ValueChangeEvent) )

MethodExpression representing a value change listener method that will be notified when a new value has been set for this input component. The expression must evaluate to a public method that takes a ValueChangeEvent parameter, with a return type of void, or to a public method that takes no arguments with a return type of void. In the latter case, the method has no way of easily knowing what the new value is, but this can be useful in cases where a notification is needed that "this value changed".

maxlengthfalsejakarta.el.ValueExpression
(must evaluate to int)
The maximum number of characters that may be entered in this field.