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POHow to evaluate a FacesComponent property inside a custom component
 

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  1. POHow to evaluate a FacesComponent property inside a custom component
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    <p>Lately, I've been working on a dynamic form project but is stop with a custom component problem. What I have:</p> <p>A faces component for formField:</p> <pre><code>@FacesComponent(value = "formField") public class FormFieldCompositeComponent { private boolean email; } </code></pre> <p>A custom component jsf:</p> <pre><code>&lt;o:validator for="email_text" validatorId="emailValidator" disabled="#{not cc.email}" /&gt; </code></pre> <p>OR</p> <pre><code>&lt;c:if test="#{not cc.email}"&gt; &lt;f:validator for="email_text" validatorId="emailValidator"&gt;&lt;/f:validator&gt; &lt;/c:if&gt; </code></pre> <p>OR</p> <pre><code>&lt;f:validator disabled="#{not cc.email}" for="email_text" validatorId="emailValidator"&gt;&lt;/f:validator&gt; </code></pre> <p>And the validator:</p> <pre><code>@FacesValidator("emailValidator") public class EmailValidator implements Validator { } </code></pre> <p>My problems are:</p> <p>1.) If I use an ordinary f:validator, like the one I use above and then use c:if to enable/disable it, then it will not work. According to some articles I've read it's because f:validator validates on build time, not on render time.</p> <p>2.) If I use o:validator, it works but the problem is every time you hit submit a new line of invalid email error is added to p:messages. Example I clicked submit button 3 times, then I get 3 times the email error.</p> <p>Any idea?</p> <p>More info (anatomy of the project) Example I have a page user with field email, it will include the following custom components:</p> <pre><code>+user.xhtml +formPanel +formField (this is where the validator is defined) +formButtons (the action button) +p:messages is defined </code></pre> <p>user.xhtml</p> <pre><code>&lt;formPanel&gt; &lt;formField field="email" /&gt; &lt;formButtons /&gt; &lt;/formPanel&gt; </code></pre> <p>Command button is like (formButtons):</p> <pre><code>&lt;p:commandButton id="saveButton" rendered="#{cc.attrs.edit}" value="#{messages['action.save']}" action="#{cc.attrs.backingBean.saveOrUpdate()}" icon="ui-icon-check" ajax="#{cc.attrs.ajaxSubmit}"&gt; &lt;c:if test="#{cc.attrs.backingBean.lcid != null}"&gt; &lt;f:param name="cid" value="#{cc.attrs.backingBean.lcid}" /&gt; &lt;/c:if&gt; &lt;/p:commandButton&gt; </code></pre> <p>The p:messages as defined on formPanel:</p> <pre><code>&lt;p:messages id="formMessages" showDetail="true" showSummary="false" redisplay="false"&gt;&lt;/p:messages&gt; </code></pre> <p>Note: <br />1.) What I've noticed is that the validator is called n times, where n is the number of submit or click done.</p> <p>xhtml - <a href="https://github.com/czetsuya/crud-faces/blob/master/crud-faces/src/main/webapp/administration/user/user.xhtml" rel="nofollow">https://github.com/czetsuya/crud-faces/blob/master/crud-faces/src/main/webapp/administration/user/user.xhtml</a></p> <p>the tags - <a href="https://github.com/czetsuya/crud-faces/tree/master/crud-faces/src/main/webapp/resources/tags" rel="nofollow">https://github.com/czetsuya/crud-faces/tree/master/crud-faces/src/main/webapp/resources/tags</a></p> <p>bean component - <a href="https://github.com/czetsuya/crud-faces/tree/master/crud-faces/src/main/java/org/manaty/view/composite" rel="nofollow">https://github.com/czetsuya/crud-faces/tree/master/crud-faces/src/main/java/org/manaty/view/composite</a></p>
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    1. USczetsuya
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    1. COMaybe use `redisplay=false` on `p:messages`.
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      1. POHow to evaluate a FacesComponent property inside a custom component
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    2. COHi, the p:messages' redisplay is already set to false so this is not the issue.
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      1. POHow to evaluate a FacesComponent property inside a custom component
      1. USczetsuya
    3. COAs asked in your previous question on this subject, please post an SSCCE. The usage of `for` attribute is so strange in this context that I am not able to recreate your code and therefore not be able to reproduce your problem. At least, the `for` attribute should only be used **outside** the composite implementation, on the template client. See for a real world example also: http://stackoverflow.com/questions/8780703/how-to-specify-a-validator-for-an-input-component-inside-a-composite-component/
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