Re: How to pass data from page(tml) to java class

[Ulrich Stärk]

client = new Client();

Beaneditform is taking care of that for you. If you want to do it 
manually than you have to make sure it gets instantiated.

BTW, I'm just guessing that this is causing your NPE. If you had read 
the stacktrace or even used a debugger you would know exactly where the 
NPE is occurring.

Uli

Am 23.04.2009 11:28 schrieb kk4Nabble:
HI,

It workes for beaneditform perfectly fine.
 Thats  when i give like this.

 <t:beaneditform submitlabel="Create " object="client"/>

But not for the usual form .

I even tried
t:value="client.firstName".
But it does not work.




Ulrich Stärk wrote:
Your client object is probably null. Make sure it isn't.

Uli

Am 23.04.2009 11:14 schrieb kk4Nabble:
Hi all,

Am learning Tapestry 5.

This is createclient.tml

<form t:type="form" t:id="names" >
                <t:errors/>
                <table>
                        <tr>
                                <td>First Name:</td>
                                <td><input t:type="TextField" t:id="firstName"
t:value="firstName"/></td>
                        </tr>
                        <tr>
                                <td>Last Name:</td>
                                <td><input t:type="TextField" t:id="lastName"
t:value="lastName"/></td>
                        </tr>
                        <tr>
                                <td></td>
                                <td><input type="submit" value="Save"/></td>
                        </tr>
                </table>
        </form>

And createclient.java

public class CreateClient
{

        @Property
        private String firstName;

        @Property
        private String lastName;

        @Component(id = "names")
        private Form form;
   
	
        @Component(id = "firstName")
        private TextField firstNameField;

        @Component(id = "lastName")
        private TextField lastNameField;
        
        
    @Property
    private Client client;

    @Inject
    private Session session;

    @InjectPage
    private Index index;



        @CommitAfter
    Object onSuccess()
    {
        client.setFirstName(firstName);
        client.setLastName(lastName);
        session.persist(client);

        return index;
    }
}       

I have an entity class Client with first name and lastname.

If i don use beaneditform And want to use this form and still store the
value of client in database.

The above method gives null pointer exception .

How  do i do that?

Did i miss anything?

Can anyone help me..

Thanks in advance..


 

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