[David]

I am trying to find information on how to have dynamically created beans on a form. I have a bean with several properties, and an associated form that has an ArrayList of these beans. What I need to do is when a button is pressed, the jsp adds another bean that will be populated and added to the form’s arrayList.

JSP
<logic:iterate index=”i” …>
<bean:write name=”bean” property='<%= “bean.from[” + i + “]” %>’/>
…>

Bean
String to ;
String from;
// setters & getters

FormA {
ArrayList beans
getBean()
setBean(Bean b)
}

I know how to iterate over a list on a form to display the bean, but what I don’t know is how to create the beans in the jsp. Also, I still have to figure out how each field on the bean could have an error message to be displayed.
Has anyone seen or done this?

I have tried searching around, but so far I haven’t found a solution.

Thank you

[Riyad Kalla]

Moving to OT > Soft Dev

[David]

Ok, I think the answer is the use of DynamicForms. If I have one or two values on the page, that would go on the form, and the dynamically sized list would be a bean on that forms collection – I think. The problem is that I don’t see how to create a bean for a user to populate with values. All the examples show the action creating this list, and then the JSP merely showing how to view them – which is the opposite of what I need.

Config:
<form-bean name=”requestForm” type=”org.apache.struts.action.DynaActionForm”>
<form-property name=”bean” type=”com.xxx.yyy.myBean[]” size=”4″ />
<form-property name=”fieldA” type=”java.lang.String”/>
<form-property name=”fieldB” type=”java.lang.String”/>
<form-property name=”fieldC” type=”java.lang.String”/>
</form-bean>

Then in my JSP:
c:forEach var=”airRequest” items=”${requestForm.map}”>
<html:text indexed=”true” name=”airRequest” property=”fieldA”/>
<html:text indexed=”true” name=”airRequest” property=”fieldB”/>
<html:text indexed=”true” name=”airRequest” property=”fieldC”/>
</c:forEach>

Now this doesn’t do anything because it is trying to display – but there isn’t anything to display?

If someone sees what I am doing wrong I would appreciate it.

[Author]

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