Apple WebObjects 3.5 Manual de usuario descargar pdf (Pagina 57)

Adding the Finishing Touches

4. Enter the following code before the return statement in clearGuestList:

[[self application] clearGuests];

This code calls the application’s clearGuests method, which removes all

the Guest objects from the array.

5. Save

GuestList.wos.

6. Go back to WebObjects Builder.

7. Place the cursor below the table and press Enter.

8. Choose from the Elements pop-up list and click .

This creates a submit button that the user will click to clear the guest

list.

9. Using the Inspector, bind the submit button’s

value attribute to

(including the quotes)

"Clear Guest List".

This changes the title of the button. Note that the quotes are

necessary to indicate that you’re binding a string, not a variable.

10. Bind the

action attribute to clearGuestList.

When the user clicks the button, the

clearGuestList action method is

called, which causes the guest list to be cleared and the page to be

redrawn.

Adding a Dynamic Hyperlink

Now you’ll create a hyperlink that returns the user to the Main page.

1. Place the cursor below the submit button (outside the rectangle of its

containing form).

2. Choose from the Elements pop-up list and click .

3. Double-click the text “Hyperlink” and type

Return to Sign-in

Page.

4. Inspect the hyperlink.

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Apple WebObjects 3.5 Manual de usuario Pagina 57