Re: [Wicket-user] validating input

[Igor Vaynberg]

also look at FormComponent.setType(Class). wicket can perform type conversion from the request parameter string to the type of your model object. if the conversion fails it generates a validation error.

so TextField tf=new TextField("id", model);
tf.setType(Integer.class)

will only accept values that can be converted to integers

for explanation on how errors are constructed try searching the wiki for "validation messages"

-Igor

On 3/14/06, Jonathan Cone <[EMAIL PROTECTED]> wrote:

Hey Vincent,

 

In wicket, validators can be add()ed to components like anything else.  For example, one way to make a textfield required without using the helper class would be to do something like:

TextField tf  = new TextField("id",...);

tf.add(RequiredValidator.getInstance());

 

Check out the javadoc for the  wicket.markup.html.form.validation package, there are some common validators in there and its real easy to write a custom one yourself.  I think you'll find that validation in wicket is as easy as you were hoping.

----- Original Message -----

From: Vincent Jenks

To: wicket-user@lists.sourceforge.net

Sent: Tuesday, March 14, 2006 3:52 PM

Subject: [Wicket-user] validating input

I just built a form that has a mixture of TextField, TextArea, and CheckBox components in it.  I am now adding validation to get a feel for how it works but am confused.

I found that I could substitute a TextField with a RequiredTextField and validation was *extremely* simple to setup....if you're using <input> form fields.  However, it doesn't appear that these helper classes exist for all types of form widgets...or am I mistaken?

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