Here's a snippet from my checkout.jsp:
<c:forEach var="item" items="${checkOutForm.cartEntries}"
varStatus="status">
<c:if test="${status.index%2==1}">
<TR bgcolor="#ECECFF">
</c:if>
<c:if test="${status.index%2==0}">
<TR bgcolor="#FFECFA">
</c:if>
<TD><A href="../showProduct.do?id=${item.productID}">
<IMG src="images/product_pix/${item.productID}_mini.jpg" border=0
align=left height=40></a></TD>
<TD><font face="Verdana" size="2"> <c:out
value="${item.productName}"/></TD>
<TD><font face="Verdana" size="2"> <fmt:formatNumber
value="${item.productPrice}" type="currency" currencySymbol="€"/></TD>
<TD><font face="Verdana" size="2"><b>x</b> <html:text
property="cartEntries[${status.index}].productCount"
value="${item.productCount}"
size="1"/></TD><TD align="left"><html-el:link
href="../CheckOut.do?DIALOG-EVENT-DELETE&productID=${item.productID}">
<html:img src="../jsp/images/trash.gif" border="0"
align="left"/>
</html-el:link></TD>
</TR>
</c:forEach>
Well, you see, it's quite easy :) The only thing I have to do after user
submitting the data, is to persist the given cartEntries[].productCount,
becouse my shoppingcart is in the database (which is more safe and easer
to analye with some stastic apps later).
Chhers,
Danny
P.S. And yes, I use Struts Dialogs :)
David Evans schrieb:
Sorry, I've search for hours but can't seem to find the answer to this
basic problem.
I'm building a shopping cart for the first time in struts. I have a
display cart jsp that will show each item, and as expected, i have a qty
textbox for each item and an update cart button. so each qty field will
have to have, as part of its name, an id to tie it to the particular
item in the cart. there is another field in each row, a "remove"
checkbox, so i can't just name it the id. the cart hangs out in the
session scope, and has a List of CartItem objects called "items". the
action, when called to show the cart, will call cart.getItems() and
stick the List in the request, so that it can easily be referenced by
the c:foreach tag that i will be using to create the html. So the only
way i can figure to get those qty fields in the request to be set in the
ActionForm, upon form submission, is to use a map in the ActionForm,
since i won't know how many items there will be. So the ActionForm ends
up with all of the qty fields in the map, with the key being the name
attribute from the textbox, and the value being the quantity typed in by
the user. So in the action upon form submission i can iterate through
the keys, filter out all keys that start with "qty" and update the qty
for those items.
So this seems a little hackish, i was wondering if there's a better way,
and secondly, what exactly do i have to name those textboxes to get
struts to recognize that they are pointing to a Map. I'm guessing that
it will be mapname.key, is that correct?
Dave
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