You can define a variable as a field of your component class.
However, it won't be visible without your providing a getter and setter.
Example:
<t:loop source="database.users" value="user">
<p>${user.name}</p>
</t:loop>
Java code:
public class MyPage {
@Inject
private UserDatabase _database;
private User _user;
public UserDatabase getDatabase() { return _database; }
public void setUser(User user) { _user = user; }
public User getUser() { return _user;
}
JSPs are based on a pretty ugly concept: code generation, as in it takes
your JSP and your snippets and generates and compiles a Java class from
them. Ugly because a stray "{" in your snippet throws a monkey wrench into
the works. Tapestry gets a big performance advantage over JSPs because of
how stupied the JSP code generation tends to be.
Anyway, Tapestry parameters are private fields, to be visible outside the
component's code they must be exposed as properties: read-only or read/write
(or even write-only) by providing the correct accessors.
My comments was that the Loop component has the values you are looking for
... but it's not sharing. Add an issue and we'll see about getting that
into 5.0.6 or 5.0.7.
On 10/14/07, Mohammad Shamsi <[EMAIL PROTECTED]> wrote:
>
> hi Howard,
>
> i have no experience in Tapestry, i just test it for replacing my
> company
> framework.
> i use for 6 years struts, webworks and my own framework that based on both
> struts and webworks.
>
> in pages that made from JSP and JSTL , we can simply define a variable in
> page, this variable bind on specified scope (page, session, ...). I guess
> that if you define a new prefix for inline variables (on space variables)
> ,
> we can easily use it in components and page templates if need.
>
> in a simple implement each page or component can have a map for holding
> on
> space variables an values. (Map<String /*variable name*/, Object
> /*variable
> values*/> )
>
> am i right ? i don't know :(
>
> On 10/14/07, Howard Lewis Ship <[EMAIL PROTECTED]> wrote:
> >
> > If we made the getIndex() and getValue() methods of Loop public, then
> you
> > could:
> >
> >
> > <span t:id="loop" source="1..5">
> > ${loop.currValue}<br/>
> > </span>
> >
> > But then you must define your loop in your Java class and expose it as a
> > property:
> >
> > @Component
> > private Loop _loop;
> >
> > public Loop getLoop() { return _loop; }
> >
> >
> > .... however that won't work currently, because those methods are not
> > visible. If you add an issue, it's a few second's work to make them
> > public.
> >
> > On 10/14/07, Nick Westgate <[EMAIL PROTECTED]> wrote:
> > >
> > > I can see what you mean, though it is quite common to use the index
> > inside
> > > the page class too. T5 keeps things simple to cover the most common
> > cases.
> > >
> > > You can create your own components if you don't like the default ones.
> > > It would be interesting to see an alternative if you write one.
> > >
> > > Cheers,
> > > Nick.
> > >
> > >
> > > Mohammad Shamsi wrote:
> > > > dear Nick,
> > > >
> > > > i want index just for iteration, i don't need it in may page class,
> i
> > > think
> > > > that its better to define in Loop component class,
> > > >
> > > > suppose that i want to use Loop, 5 times in a singe page, then i
> most
> > > define
> > > > 5 index value, and five item object ???
> > > >
> > > >
> > > >
> > > > On 10/14/07, Nick Westgate <[EMAIL PROTECTED]> wrote:
> > > >> The value and index have to go somewhere. Why not in your page
> class?
> > > >>
> > > >> Cheers,
> > > >> Nick.
> > > >>
> > > >>
> > > >> Mohammad Shamsi wrote:
> > > >>> hi all,
> > > >>>
> > > >>> please take a look at my page bellow,
> > > >>>
> > > >>> <!-- do i have to define item object in page class ?? i
> want
> > > to
> > > >> use
> > > >>> it just here in page ??? -->
> > > >>> <t:loop source="items" value="item" >
> > > >>>
> > > >>> <tr>
> > > >>> <!-- i want to put an index here for each row in table
> > -->
> > > >>> <td> ??? </td>
> > > >>> <td>${item.firstName}</td>
> > > >>> <td>${item.lastName}</td>
> > > >>> <td>${item.phone}</td>
> > > >>> </tr>
> > > >>> </t:loop>
> > > >>>
> > > >>> 1 - i just want to use item object here, for iteration, i don't
> > want
> > > to
> > > >>> define it at my page class, can i ?
> > > >>>
> > > >>> 2 - i need an index var for each row, but it seems that for use
> > index
> > > >>> attribute in loop component, i have to define a property at my
> page
> > > >> class
> > > >>> first, :((
> > > >>>
> > > >>
> ---------------------------------------------------------------------
> > > >> To unsubscribe, e-mail: [EMAIL PROTECTED]
> > > >> For additional commands, e-mail: [EMAIL PROTECTED]
> > > >>
> > > >>
> > > >
> > > >
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > > For additional commands, e-mail: [EMAIL PROTECTED]
> > >
> > >
> >
> >
> > --
> > Howard M. Lewis Ship
> > Partner and Senior Architect at Feature50
> >
> > Creator Apache Tapestry and Apache HiveMind
> >
>
>
>
> --
> sincerely yours
> M. H. Shamsi
>
--
Howard M. Lewis Ship
Partner and Senior Architect at Feature50
Creator Apache Tapestry and Apache HiveMind
