On Wed, 11 Apr 2012 19:05:20 -0300, Juan Germán Castañeda Echevarria
<juan...@ciencias.unam.mx> wrote:
Hi everyone,
Hi!
I want to be able to disable the browsers cache in some
pages programmatically by adding the necessary HTTP headers to the
response. I found the following recipe where it is shown how to do
something similar with an annotation and a MarkupRenderFilter
http://tapestry.apache.org/meta-programming-page-content.html.
Is that the best, only and/or current way to do it? Just want to know
before actually writing it.
Not the only one. For setting HTTP headers only, I think that approach is
a little overkill. You could implement a ComponentRequestFilter, @Inject
the Response object in it and that and contribute the filter to the
ComponentRequestHandler service.
I've started writing the answer thinking you were asking about adding meta
tags, not HTTP headers. I don't want to waste what I've wrote, so here it
goes. :P
If you have a single layout component used in all pages, you can use
afterRender(MarkupWriter writer) and add the meta tags through through
Tapestry DOM rewriting a.k.a. get the Document from the writer parameter
and and some elements. If you don't have a single layout component, you
can create a mixin that does the above and apply it to the layout
components. Or you could write a ComponentClassTransformWorker that
applies this mixin to all pages.
--
Thiago H. de Paula Figueiredo
Independent Java, Apache Tapestry 5 and Hibernate consultant, developer,
and instructor
Owner, Ars Machina Tecnologia da Informação Ltda.
http://www.arsmachina.com.br
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