Accessing indexed property with JSTL

[Hussein Baghdadi]

Hi.
I'm trying to implement a simple CRUD application.
/action/loadCart.do is responsible for populating an action form from shopping cart session-based object.
The previous action form has an array consisting of shopping cart's items.

CartForm.java
CartItem[ ] items;
-----
CartItem.java
BookItem item;
boolean checked;
-----
BookItem.java
Book book;
int quantity;

And the questions is :
How to access this array in cart.jsp page using JSTL ? (just a little snippet if possible)

[Chris Boldon]

Instead of using an Array I would use a Collection of objects. Then you would set the Collection to a request in the Action. Then you could access it using JSTL by ${}.

[Merrill Higginson]

This question is answered by question number 6 in the JavaRanch Struts FAQ.

[Durgaprasad Guduguntla]

Originally posted by John Todd:

And the questions is :
How to access this array in cart.jsp page using JSTL ? (just a little snippet if possible)

You can use JSTL c:forEach tag to iterate over array as well. Take a look at the following code snippet which will be useful in your object model:

    
<c:forEach var="cartItem" items="${cartItemsArray}">
Book Name is: <c:out value="${cartItem.item.book.name}"/> | Quanity is: <c:out value="${cartItem.item.quantity}"/> 
</c:forEach>

[Hussein Baghdadi]

Ok, here is more info :
cart.jsp should display some thing like :

<td>Book title</td>
<td>an editable text field shows the quantity of each book</td>
<td>a check box (used to indicate if the item should be included in the operation)</td>
<tr>
<td><button>Delete</button><button>Update</button></td>
</tr>

While the tutotial in : http://faq.javaranch.com/view?IndexedProperties is so good, it uses
Strut's logic, I want to use JSTL instead.
(Well, I will implement it with AJAX later since it makes more sense in this case, but I want to learn how to make it with Struts).
Any ideas ?
BTW, what do IndexedProperties and StrutsFaq mean in :
http://faq.javaranch.com/view?StrutsFaq
http://faq.javaranch.com/view?IndexedProperties
I understand ? as the begining of the query string, followed by parameters names and values.

[Hussein Baghdadi]

Ok, I'm trying some thing like :

<logic:iterate id="cartItem" name="cartForm" property="cartItemList">
      <tr>
          <td><bean:write name="cartItem" property="bookItem" /></td>
      </tr>
</logic:iterate>

But I got the following exception :
javax.servlet.ServletException: No getter method for property: "bookItem" of bean: "cartItem"
Well, believe me, there is a getter method !

[Carol Enderlin]

You gave up on using jstl tags? Did you try the suggested c:foreach?

p.s. are you already set up with jstl or just getting started? The JspFaq has great info about compatible versions, URLs to find the specs (a must have for jstl, very readable).
[ November 30, 2006: Message edited by: Carol Enderlin ]

[Hussein Baghdadi]

Actually, I wrote some thing like :

<c:forEach items="${requestScope.cartForm.items}" var="cartItem">
// rows and cells
</c:forEach>

But got I blank page.
(Please note, /action/loadCart.do doesn't put any thing in the request scope, I'm trying to access the cart form since it declared to be in the request scope in struts-config.xml)

[Brent Sterling]

In your class CartItem you have a method named (with the exact capitalization) getBookItem()? In your first post you have the property named just "item". Make sure you method is not named getItem().

- Brent

[Hussein Baghdadi]

Now, I appreciate Generics, I was adding BookItems to the cart form instead of CartItems
Delete functionality is working like a devil, but not the update.
Aaaa, I hate CRUD with Struts

[Hussein Baghdadi]

It is official, I have a working CRUD Struts-based application.
It uses iterate tags, I will try to implement it with JSTL.