Suggestion for better error message when action method is missing parameter

[gapps]

Hi,

Just a suggestion. I ran into the following problem:

My controller class defined an action method like so:


public static void editPOST() {

// method definition is missing the parameter
// really should be: public static void editPOST(Long id) {...}
}

In the view, I tried to insert a form:

#{form @Website.editPOST(page.id)}
...

This failed with a NullPointerException and no details:


Oops: NullPointerException
An unexpected error occured caused by exception NullPointerException:
null

play.exceptions.UnexpectedException: Unexpected Error
at play.mvc.results.RenderTemplate.apply(RenderTemplate.java:30)
at play.mvc.ActionInvoker.invoke(ActionInvoker.java:302)
at Invocation.HTTP Request(Play!)
Caused by: java.lang.NullPointerException
at play.mvc.results.RenderTemplate.apply(RenderTemplate.java:27)
... 2 more

Usually the Play! error messages are very detailed. Maybe this case
could be added and an appropriate error message (e.g. "Missing
parameter 'id'") can be added.

-Rico

[Guillaume Bort]

Yes of course, can you report this issue?

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[dirk]

Please also include a request for a better error message when you forget to mark a Controller action method with static:

    public void test() {
    }

Action not found

Action Services.test could not be found. Error raised is MODULE$

[Rico]

Ticket created at:

http://play.lighthouseapp.com/projects/57987-play-framework/tickets/414

-Rico