Foundation
Project Documentation

Summary

Tag name: <tr:inputHidden>
UIComponent class: org.apache.myfaces.trinidad.component.core.input.CoreInputHidden
Component type: org.apache.myfaces.trinidad.CoreInputHidden
The UIXInputHidden component adds a value that will be submitted with a form, but not displayed to the user. The value can be manipulated with Javascript on the client, and such values will be automatically re-posted into any ValueBinding attached to the "value" property.

Example(s): 

<h:form>
  <tr:inputHidden value="#{managed.property}"/>
  <tr:commandButton text="Submit"/>
</h:form>

Events

Type Phases Description
javax.faces.event.ValueChangeEvent Process Validations,
Apply Request Values		 The valueChange event is delivered when the value attribute is changed.
org.apache.myfaces.trinidad.event.AttributeChangeEvent Invoke Application,
Apply Request Values		 Event delivered to describe an attribute change. Attribute change events are not delivered for any programmatic change to a property. They are only delivered when a renderer changes a property without the application's specific request. An example of an attribute change events might include the width of a column that supported client-side resizing.

Attributes

Name Type Supports EL? Description
attributeChangeListener javax.el.MethodExpression Only EL a method reference to an attribute change listener. Attribute change events are not delivered for any programmatic change to a property. They are only delivered when a renderer changes a property without the application's specific request. An example of an attribute change events might include the width of a column that supported client-side resizing.
binding org.apache.myfaces.trinidad.component.core.input.CoreInputHidden Only EL an EL reference that will store the component instance on a bean. This can be used to give programmatic access to a component from a backing bean, or to move creation of the component to a backing bean.
converter javax.faces.convert.Converter Yes a converter object
id String No the identifier for the component. The identifier must follow a subset of the syntax allowed in HTML:
  • Must not be a zero-length String.
  • First character must be an ASCII letter (A-Za-z) or an underscore ('_').
  • Subsequent characters must be an ASCII letter or digit (A-Za-z0-9), an underscore ('_'), or a dash ('-').
immediate boolean Yes whether the value is converted and validated immediately in the Apply Request Values phase, or is handled in the Process Validators phase, the default. By default, values are converted and validated together in the Process Validators phase. However, if you need access to the value of a component during Apply Request Values - for example, if you need to get the value from an actionListener on an immediate commandButton - then setting this to "immediate" makes that possible.
rendered boolean Yes whether the component is rendered. When set to false, no output will be delivered for this component (the component will not in any way be rendered, and cannot be made visible on the client).
required boolean Yes whether a non-null, non-empty value must be entered. If false, validators will not be executed when the value is null or empty.
requiredMessageDetail String Yes the message to be displayed, if 'required' validation fails.

Parameters:

  • {0} the label that identifies the component

validator javax.faces.el.MethodBinding Only EL a method reference to a validator method
value Object Yes the value of the component. If the EL binding for the "value" points to a bean property with a getter but no setter, and this is an editable component, the component will be rendered in read-only mode.
valueChangeListener javax.faces.el.MethodBinding Only EL a method reference to a value change listener