Get the validation message for a specific component

Question

<h:inputText id="myInputText"
             title="The text from validation message here"
             style="#{component.valid? '' : 'border-color:red'}"
             validator="#{MyBean.validate}"
             required="true"
             requiredMessage="required"
             value="#{MyBean.value} />
<p:message for="myInputText" display="text"/>

Since I want to custom the looking for a failed validation in an inputText compoment and I know that it is possible to know whether the component was successfully validated or not, I would like to know if it is viable and how I can get the validation message, in order to display it as the tittle of my inputText component.

Answer 1

The problem you will have with what you're planning is that a single component can have more than one message queued. What are you going to do then? For demonstration purposes, you can use

<h:inputText id="myInputText"
             title="#{facesContext.getMessageList('myInputText').get(0)}"
             style="#{component.valid ? '' : 'border-color:red'}"
             validator="#{MyBean.validate}"
             required="true"
             requiredMessage="required"
             value="#{MyBean.value}" />

EDIT : You should just move the logic into your backing bean:

1. Implement a method that'll pull the detail from an available FacesMessage list, given a clientId

   public String getComponentMessageDetail(String clientId) {
       String detail = null;
       FacesContext ctxt = FacesContext.getCurrentInstance();
       List<FacesMessage> componentMessages = ctxt.getMessages(clientId);
   
       if (componentMessages != null && componentMessages.isEmpty() == false) {
           //returns the detail, from only the first message!
           detail = componentMessages.get(0).getDetail();
       }
   
       return detail;
   }
   

2. Use the utility method in your view

    <h:inputText id="myInputText"
                 title="#{MyBean.getComponentMessageDetail('myInputText')}"
                 style="#{component.valid ? '' : 'border-color:red'}"
                 validator="#{MyBean.validate}"
                 required="true"
                 requiredMessage="required"
                 value="#{MyBean.value}" />