BindUtils.bind two objects - is it possible?

**iandoll** · Nov 17th, 2005, 10:39 AM

Hi,

I am trying to bind two objects (instances of same class) to two input boxes. For instance I have classA:
ClassA {
String name;
}

In controller class, method handleRequest I have following code:
ModelAndView model = new ModelAndView();
ClassA obj1 = new ClassA();
ClassA obj2 = new ClassA();
....
BindUtils.bind(request, obj1, "object1");
BindUtils.bind(request, obj2, "object2");
....
model.addObject("object1", obj1);
model.addObject("object2", obj2);

On Jsp page I have something like:
<spring:bind path="object1.name">
<input type="text" name="${status.expression}" value="${status.value}" />
</spring:bind>

<spring:bind path="object2.name">
<input type="text" name="${status.expression}" value="${status.value}" />
</spring:bind>

Now, when I fill value to one input and submit this JSP page, then name property of objects obj1/obj2 has same value. This is because rendered html is something like:
<html>
...
<input type="text" name="name" value="" />
<input type="text" name="name" value="" />
..
</html>

As you can see, I have two inputs with same name, so that is explanation why I have same name property in both cases.

Where I am making mistake? I expected in html something like:
<input type="text" name="object1.name" value="" />
<input type="text" name="object2.name" value="" />

Then object1.name will be unique on page.

I have tried to manualy create input with objectName prefix, something like:
<spring:bind path="object1.name">
<input type="text" name="object1.${status.expression}" value="${status.value}" />
</spring:bind>

<spring:bind path="object2.name">
<input type="text" name="object2.${status.expression}" value="${status.value}" />
</spring:bind>

But in that case BindUtils.bind(request, obj1, "object1"); doesn't give me expected result.

Is there any other way how to do this?
I know I can create wrapper class (which will aggregate obj1/.obj2) and create commandObject (using SimpleFormController), but is there any other way?

Regards

**Colin Yates** · Nov 18th, 2005, 03:58 AM

Check out http://forum.springframework.org/sho...ght=checkboxes

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