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POJSF autocomplete ignoring null values
 

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    <p>I have a problem regarding jsf autocomplete elements. I want my page to have an autocomplete element and after a user selects a value from the field, another field is automatically created. The maksimum number of autocomplete field is 3, so after the 3rd one, the 4th one is disabled:</p> <pre><code>&lt;h:outputLabel for="fieldsOfStudy" value="#{amsg.fieldsOfStudy}"/&gt; &lt;p:outputPanel id="fieldsOfStudy" autoUpdate="true" layout="block"&gt; &lt;ui:repeat value="#{cc.attrs.offer.fieldsOfStudy}" var="studyField" varStatus="status"&gt; &lt;h:panelGroup id="studyField" layout="block"&gt; &lt;h:outputText value="#{amsg.handleGetObject(enumHelper.toMessageKey(studyField))}"/&gt; &lt;p:commandLink action="#{cc.attrs.offer.removeFieldOfStudy(status.index)}" process="@this" update="@([id$=fieldsOfStudyAutocomplete])" styleClass="ui-icon ui-icon-close"/&gt; &lt;/h:panelGroup&gt; &lt;/ui:repeat&gt; &lt;/p:outputPanel&gt; &lt;h:message for="fieldsOfStudy" errorClass="error"/&gt; &lt;h:panelGroup id="fieldsOfStudyAutocomplete"&gt; &lt;p:autoComplete value="#{offerBean.selectedFieldOfStudy}" dropdown="true" required="#{empty cc.attrs.offer.fieldsOfStudy}" completeMethod="#{offerBean.completeFieldsOfStudy}" disabled="#{cc.attrs.offer.fieldsOfStudy.size() &amp;gt;= 3}" itemValue="#{p}" var="p" itemLabel="#{amsg.handleGetObject(enumHelper.toMessageKey(p))}" styleClass="xLargeInput"&gt; &lt;p:ajax event="itemSelect" process="@this" update="@this"/&gt; &lt;/p:autoComplete&gt; &lt;/h:panelGroup&gt; </code></pre> <p>Everything works good like this, but the problem is that every time a user presses the Save button if the "Field of study" list has 1 selected element from the autocomplete there will be another one in the list with a null value. If there are 2 selected "field of studies" the 3rd one will be also created but ill have a null value. If there are 3 selected "fields of studies", then there wont be any 4th element in the list.</p> <p>Is there any way I can set the autocomplete to ignore null fields? In other words, if a user doesnt select anything from the autocomplete, how not to pass null values to the DTO?</p>
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    1. USMarko Ćilimković
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