Binding component output to a string

Hi,

I'm trying to programmatically generate the HTML output for a  
reusable WOComponent and bind that output to a WOString. I've found a  
way to do this, however, when an action is invoked from the component  
who's content was generated (the component contains a form) I get the  
following exception:

<WorkerThread0> java.lang.NullPointerException
	at com.webobjects.appserver._private.WOForm._enterFormInContext 
(WOForm.java:58)
	at com.webobjects.appserver._private.WOForm.invokeAction(WOForm.java: 
79)
	at com.webobjects.appserver.WOComponent.invokeAction 
(WOComponent.java:945)
	at com.webobjects.appserver.WOSession.invokeAction(WOSession.java:1168)
	at com.webobjects.appserver.WOApplication.invokeAction 
(WOApplication.java:1375)
	at  
com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWit 
hPreparedPage(WOComponentRequestHandler.java:196)
	at  
com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWit 
hPreparedSession(WOComponentRequestHandler.java:287)
	at  
com.webobjects.appserver._private.WOComponentRequestHandler._dispatchWit 
hPreparedApplication(WOComponentRequestHandler.java:322)
	at  
com.webobjects.appserver._private.WOComponentRequestHandler._handleReque 
st(WOComponentRequestHandler.java:358)
	at  
com.webobjects.appserver._private.WOComponentRequestHandler.handleReques 
t(WOComponentRequestHandler.java:432)
	at com.webobjects.appserver.WOApplication.dispatchRequest 
(WOApplication.java:1306)
	at com.webobjects.appserver._private.WOWorkerThread.runOnce 
(WOWorkerThread.java:173)
	at com.webobjects.appserver._private.WOWorkerThread.run 
(WOWorkerThread.java:254)
	at java.lang.Thread.run(Thread.java:613)

Here is the code I'm using to generate the HTML string I'm binding to  
the WOString in the parent component:

public String generateOutput() { // This is bound to a WOString in  
the parent component, thus displaying the component "MyComponent".
	MyComponent myComponent = (MyComponent)pageWithName("MyComponent");

	myComponent.takeValueForKey(displayGroup, "displayGroup");
	myComponent.takeValueForKey(product, "product");
		
	WOResponse response = myComponent.generateResponse();
		
	return response.contentString();
}

MyComponent contains a form with a few buttons that perform actions  
on the bound WODisplayGroup.

You're probably wondering why do I need to do this... The short  
answer is that I'm using a template engine, and I need to give users  
a way to place the output of components in their templates.

Any help would be much appreciated.

Thanks,

Ian Baxter

_______________________________________________
WebObjects-dev mailing list
[email protected]
http://www.omnigroup.com/mailman/listinfo/webobjects-dev