User tasks with custom forms: custom user inputs validation

As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.

udoderk

Hi all,
In the following articles/post is described, how to create the rendering using custom forms within  activiti explorer environment:

http://www.activiti.org/userguide/index.html#forms

http://forums.activiti.org/en/viewtopic.php?f=6&t=2366&p=10188&hilit=rendering#p10188

http://forums.activiti.org/en/viewtopic.php?f=9&t=1386&p=9332&hilit=rendering#p9332

https://vaadin.com/wiki/-/wiki/Main/Building%20Vaadin%20Applications%20on%20top%20of%20Activiti

http://forums.activiti.org/en/viewtopic.php?f=6&t=857&hilit=rendering

I miss the information about how to validate the user entries ?

Does anyone know more about it?

Thank you

udoderk

I've found the solution, as I have seen the sources of A.E.:
it is possible to register the validator on the vaadin-field in the renderer-class in Vaadin style :
textField.addValidator(new LongValidator("Value must be a long"));

package org.activiti.explorer.ui.form;<br>&hellip;.<br>public class LongFormPropertyRenderer extends AbstractFormPropertyRenderer {<br><br>&nbsp; public LongFormPropertyRenderer() {<br>&nbsp;&nbsp;&nbsp; super(LongFormType.class);<br>&nbsp; }<br><br>&nbsp; @Override<br>&nbsp; public Field getPropertyField(FormProperty formProperty) {<br>&nbsp;&nbsp;&nbsp; final TextField textField = new TextField(getPropertyLabel(formProperty));<br>&nbsp;&nbsp;&nbsp; textField.setRequired(formProperty.isRequired());<br>&nbsp;&nbsp;&nbsp; textField.setEnabled(formProperty.isWritable());<br>&nbsp;&nbsp;&nbsp; textField.setRequiredError(getMessage(Messages.FORM_FIELD_REQUIRED, getPropertyLabel(formProperty)));<br>&nbsp;&nbsp;&nbsp; <br>&nbsp;&nbsp;&nbsp; if (formProperty.getValue() != null) {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; textField.setValue(formProperty.getValue());<br>&nbsp;&nbsp;&nbsp; }<br><br>&nbsp;&nbsp;&nbsp; // Add validation of numeric value<br>&nbsp;&nbsp;&nbsp; textField.addValidator(new LongValidator("Value must be a long"));<br>&nbsp;&nbsp;&nbsp; textField.setImmediate(true);<br><br>&nbsp;&nbsp;&nbsp; return textField;<br>&nbsp; }<br>&hellip;.The validator:
package org.activiti.explorer.ui.validator;<br><br>import com.vaadin.data.validator.AbstractStringValidator;<br><br><br>/**<br> * @author Frederik Heremans<br> */<br>public class LongValidator extends AbstractStringValidator {<br><br>&nbsp; private static final long serialVersionUID = 8306001395582004472L;<br><br>&nbsp; public LongValidator(String errorMessage) {<br>&nbsp;&nbsp;&nbsp; super(errorMessage);<br>&nbsp; }<br><br>&nbsp; @Override<br>&nbsp; protected boolean isValidString(String value) {<br>&nbsp;&nbsp;&nbsp; try {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Long.parseLong(value);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return true;<br>&nbsp;&nbsp;&nbsp; } catch (Exception e) {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return false;<br>&nbsp;&nbsp;&nbsp; }<br>&nbsp; }<br>}