It gets it from a JavaBean, List or Map either already in some reachable
scope or defined in your JSP. For example, if I've defined a list of states
in an action class like:
List statesList = new ArrayList( State.getStates());
where State is a command object or stateless session bean querying the
database to retrieve a list of states, and I stick them into application
scope (so everyone can use it):
ServletContext servletContext = this.servlet.getServletContext();
servletContext.setAttribute( "listStates", listStates);
I can iterate through this list on a JSP and display the names like:
<table>
<logic:iterate name="listStates" // the List
property="state" // a state object
id="states" // arbitrary page-scope name
scope="application"
type="com.whatever.State">
<tr><td>
<bean:write name="states" property="name" />
</td></tr>
</logic:iterate>
</table>
or perhaps I need a data object specific to the user on the JSP:
<bean:define name="customer"
property="data"
type="com.whatever.Customer"
id="orders"
scope="session" />
where "customer" is an Order object specific to this customer's ID
(retrieved from the database when the user passes his ID through a form), so
I can display the pending orders this customer has placed:
<table>
<logic:iterate name="orders"
property="customerOrders"
id="order"
type="com.whatever.CustomerOrder">
<tr><td>
<bean:write name="order" property="pending" />
</td></tr>
</logic:iterate>
</table>
There are tons of examples in the archive.
Mark
-----Original Message-----
From: Struts Newsgroup [mailto:[EMAIL PROTECTED]]
Sent: Monday, June 24, 2002 4:10 PM
Subject: Re: Best Practice Question/Conceptual Problem
From: "Kenny Smith" <[EMAIL PROTECTED]>
===
Hi Keith,
But how does the logic:iterate tag know where to get the information from?
That's the part that is really baffling me. I don't understand how it's
getting the information, so I'm not sure how to apply it to other
applications, etc. Could you (or anyone) please explain how it knows?
Kenny
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