Just as a side note: Environmental is not the only way. Component parameters are actually bidirectional. For example property bindings are writable. A component parameter is not limited to provide values for components. It may be used to populate a value from the component to its container. A good example is Loop component's value parameter which is used by Loop to "communicate" with its container.
On Thu, Jul 21, 2011 at 8:36 PM, Thiago H. de Paula Figueiredo < thiag...@gmail.com> wrote: > On Thu, 21 Jul 2011 15:32:27 -0300, George Christman < > gchrist...@cardaddy.com> wrote: > > Tapestry's philosophy is that components (including pages) are and should > be black boxes, so the normal flow is from top to down, not the opposite. > > You'll need to use the Environmental service in your page and add some > custom object on it, typically in @BeginRender. Then, in your component, you > invoke some method in this object. In the page, in some event after > @BeginRender, you get the value back. -- Best regards, Igor Drobiazko http://tapestry5.de
