Hi all, I'm very new to binding and I found an article on the mailing list
that seemed pretty close what I needed in regards to dynamic disabling. I'm
trying to dynamically disable particular fields within my form at different
states. These fields will come from the db and selected within my for loop.
I have the following code and I get the following exception.
Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException:
Expression 'disabled' for class
org.apache.tapestry5.corelib.components.TextField is read-only.
at
org.apache.tapestry5.internal.bindings.PropBinding.set(PropBinding.java:76)
at
org.healthresearch.eprs.components.PurchaseRequestForm.onValidateFromPR(PurchaseRequestForm.java:416)
at
org.healthresearch.eprs.components.PurchaseRequestForm$Shim_b586eaee4d4e0.invoke(Unknown
Source)
at
org.apache.tapestry5.internal.plastic.MethodHandleImpl.invoke(MethodHandleImpl.java:48)
at
org.apache.tapestry5.internal.transform.BaseEventHandlerMethodInvoker.invokeEventHandlerMethod(BaseEventHandlerMethodInvoker.java:53)
... 114 more
Could someone please guide me and tell me what I'm doing wrong?
@Inject
private Request req;
@Inject
private ComponentResources componentResources;
@Inject
private BindingSource source;
void setupRender() {
for (String field : req.getParameterNames()) {
if (field.equals("quanity")) {
ComponentResources component =
componentResources.getEmbeddedComponent(field).getComponentResources();
String defaultPrefix = "prop";
String description = "descrip";
String expression = "disabled";
Binding b = source.newBinding(description, component,
defaultPrefix, expression);
b.set(true);
}
}
}
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