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POjsf get selectOneMenu value from actionListener of h:commandButton
 

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  1. POjsf get selectOneMenu value from actionListener of h:commandButton
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    <p>I have a primefaces datatable with the attribute editable="true" so I can't edit the rows dynamically. I have two fields: an inputText and a selectOneMenu. I want to be able to add rows dynamically from the footer. I added empty field in the footer and when the user click a button, I want to add the new line to the datatable with the correct values.</p> <p>Here is the code I have:</p> <pre><code>&lt;h:form&gt; ... &lt;p:dataTable value="#{bean.myObjects}" id="myDatatable" editable="true" var="obj"&gt; &lt;f:facet name="header"&gt; &lt;h:outputText value="My Datatable" /&gt; &lt;/f:facet&gt; &lt;p:column headerText="My String value"&gt; &lt;p:cellEditor&gt; &lt;f:facet name="output"&gt; &lt;h:outputText value="#{obj.myString}" /&gt; &lt;/f:facet&gt; &lt;f:facet name="input"&gt; &lt;p:inputText value="#{obj.myString}"/&gt; &lt;/f:facet&gt; &lt;/p:cellEditor&gt; &lt;f:facet name="footer"&gt; &lt;h:inputText value="#{bean.myNewObject.myString}" /&gt; &lt;/f:facet&gt; &lt;/p:column&gt; &lt;p:column headerText="My List Value"&gt; &lt;p:cellEditor&gt; &lt;f:facet name="output"&gt; &lt;h:outputText value="#{bean.myListValue ? 'yes' : 'no'}" /&gt; &lt;/f:facet&gt; &lt;f:facet name="input"&gt; &lt;h:selectOneMenu value="#{bean.myListValue}" &gt; &lt;f:selectItem itemValue="true" itemLabel="yes" /&gt; &lt;f:selectItem itemValue="false" itemLabel="no" /&gt; &lt;/h:selectOneMenu&gt; &lt;/f:facet&gt; &lt;/p:cellEditor&gt; &lt;f:facet name="footer"&gt; &lt;h:selectOneMenu value="#{bean.myNewObject.myListValue}" &gt; &lt;f:selectItem itemValue="true" itemLabel="yes" /&gt; &lt;f:selectItem itemValue="false" itemLabel="no" /&gt; &lt;/h:selectOneMenu&gt; &lt;/f:facet&gt; &lt;/p:column&gt; &lt;p:column&gt; &lt;p:rowEditor /&gt; &lt;f:facet name="footer"&gt; &lt;h:commandButton actionListener="#{bean.addRow}"&gt; &lt;f:ajax execute="myDatatable" render="myDatatable" /&gt; &lt;/h:commandButton&gt; &lt;/f:facet&gt; &lt;/p:column&gt; &lt;/p:dataTable&gt; ... &lt;/h:form&gt; </code></pre> <p>In my bean, I just have this for the addRow method:</p> <pre><code>public void addRow() { this.myObjects.add(this.myNewObject); this.myNewObject = new MyObject(); } </code></pre> <p>and the init:</p> <pre><code>@PostConstruct public void init() { this.myObjects = Controller.getAllMyObjects(); this.myNewObject = new MyObject(); } </code></pre> <p>I could precise that the bean is in ViewScope. The result is that the line is added, the string value is correct but the list value is always "no" even if I set it to true with this.myNewObject.setMyListValue(true) in the bean after instanciate the object.</p> <p>I know that this is something with to render or the execute of attributes. If I change the line:</p> <pre><code>&lt;f:ajax execute="myDatatable" render="myDatatable" /&gt; </code></pre> <p>to:</p> <pre><code>&lt;p:ajax update="@form" /&gt; </code></pre> <p>the list value is true but the string value is not set.</p> <p>How to be sure that both of my attribute are rendered and how can I get there values without submiting the whole form?</p> <p>Thanks</p>
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    1. COTry to use `<p:commandButton action="#{bean.addRow}" prcoess="myDatatable" update="myDatatable" />` in the footer instead of the `h:commandButton` with `f:ajax`.
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      1. POjsf get selectOneMenu value from actionListener of h:commandButton
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    2. COThank you but the result is the same. In fact, I think my problem is that the setter property of the field linked to the selectOneMenu is called twice, first time with correct value and second time with null value. And my field is a boolean that's why the result is always "false" (null casted to boolean return false). I have seen this issue and I think it's my problem... `https://code.google.com/p/primefaces/issues/detail?id=4681`
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      1. POjsf get selectOneMenu value from actionListener of h:commandButton
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    3. COWhy are you using an `h:commandButton` with `f:ajax` instead of a `p:commandButton`? In the footer of the `selectOneMenu` you are setting the value to `#{bean.myListValue}`, but later you are using `#{bean.myNewObject.myListValue}`, if this is actually in your code this could be the problem.
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      1. POjsf get selectOneMenu value from actionListener of h:commandButton
      1. USuser1983983
 

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