[SOLVED] how to add placeholder text in the filter box in datatable column headers

how to add placeholder text in the filter box in datatable column headers

I have a prime faces datatable with few columns and have filteryBy attribute for all the columns. How do I add placeholder or watermark to provide hint for users. Any suggestions,will be appreciated thanks!

<p:dataTable var="dt" widgetVar="widgetUserRecords"
                             value="#{userBean.result}"
                             id="userRecordTable" paginator="true"
                             paginatorAlwaysVisible="false" rows="10"
                             height="300" >
<p:column sortBy="#{dt.course.name}" filterStyle="width:50px;"
                              filterBy="#{dt.course.name}" headerText="Course Name" style="text-align:bottom">
    <h:outputText value="#{dt.course.name}"/>
</p:column>
.
. 
.
  (other columns)
</p:dataTable>

Solution

First give and ID for your column and add a p:watermark component:

<h:form id="tableForm">
...    
    <p:dataTable var="dt" widgetVar="widgetUserRecords"
                     value="#{userBean.result}"
                     id="userRecordTable" paginator="true"
                     paginatorAlwaysVisible="false" rows="10"
                     height="300" >

        <p:column id="column1" sortBy="#{dt.course.name}" filterStyle="width:50px;"
                      filterBy="#{dt.course.name}" headerText="Course Name" style="text-align:bottom">
            <h:outputText value="#{dt.course.name}"/>
            <p:watermark forElement="tableForm:userRecordTable:column1" value="hint..."/>
        </p:column>

    </p:dataTable>
...
</h:form>

Don't forget to replace the tableForm id with your actual form around your p:dataTable.