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Posted to users@tapestry.apache.org by netdawg <ne...@yahoo.com> on 2012/07/23 23:07:12 UTC
Non-HTML Views
Is there a way now to render non-HTML views?
Examples:
1. Have the grid component wrap Apache POI to dynamically generate
spreadsheets?
2. Similar PDF engine to generate a pure PDF document (or convert the
rendered HTML into PDF a la joomla, drupal CMS etc)?
Much Thanks.
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Re: Non-HTML Views
Posted by netdawg <ne...@yahoo.com>.
Thanks, Thiago, Richard. Looking into chaining streamed responses.
Probably same approach will work to capture the HTML generated (as String)
and feed into flying saucer
http://www.avajava.com/tutorials/lessons/how-do-i-convert-a-web-page-to-a-string.html
How do I convert a web page to a String?
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Re: Non-HTML Views
Posted by Thiago H de Paula Figueiredo <th...@gmail.com>.
On Mon, 23 Jul 2012 18:07:12 -0300, netdawg <ne...@yahoo.com> wrote:
> Is there a way now to render non-HTML views?
It depends. The output is XML, just make your template generate the XML
format you need. Otherwise, return a StreamResponse in onActivate() or an
event handler method.
> Examples:
>
> 1. Have the grid component wrap Apache POI to dynamically generate
> spreadsheets?
Aren't you asking to generate spreadsheets from a Grid to Apache POI? Grid
wrapping Apache POI doesn't make much sense the way you described it. Just
get the date you pass to Grid (either as GridDataSource or Collection) and
pass to Apache POI, generate the spreadsheet and return it wrapped in a
StreamResponse.
> 2. Similar PDF engine to generate a pure PDF document (or convert the
> rendered HTML into PDF a la joomla, drupal CMS etc)?
To generate PDF documents in Java, you can use JasperReports or iText
(JasperReports uses iText internally). To convert rendered HTML into PDF,
first you have to get the rendered HTML. I don't know how to do that, but
I recall this having been discussed in the mailing list already. After
that, you can use an HTML renderer like Flying Saucer
(http://code.google.com/p/flying-saucer/) to transform it into PDF, wrap
the PDF in a StreamResponse and return it.
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Thiago H. de Paula Figueiredo
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Re: Non-HTML Views
Posted by Thiago H de Paula Figueiredo <th...@gmail.com>.
On Mon, 23 Jul 2012 18:44:23 -0300, Richard Frovarp <rf...@apache.org>
wrote:
> http://wiki.apache.org/tapestry/Tapestry5HowToStreamAnExistingBinaryFile
> http://wiki.apache.org/tapestry/Tapestry5HowToCreateADynamicPDF
>
> This idea works for anything you may want to return that isn't an HTML
> page.
This is correct, but it will work for any kind of response, even HTML
(probably when it's stored and/or genenerated outside a Tapestry template,
such as a database, filesystem or other templating engines). In addition,
don't forget that any XML document can be generated and returned in
Tapestry templates.
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Thiago H. de Paula Figueiredo
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Re: Non-HTML Views
Posted by Richard Frovarp <rf...@apache.org>.
On 07/23/2012 04:07 PM, netdawg wrote:
> Is there a way now to render non-HTML views?
>
> Examples:
>
> 1. Have the grid component wrap Apache POI to dynamically generate
> spreadsheets?
> 2. Similar PDF engine to generate a pure PDF document (or convert the
> rendered HTML into PDF a la joomla, drupal CMS etc)?
>
> Much Thanks.
>
>
You need to return a StreamResponse in onSubmit() or similar.
http://wiki.apache.org/tapestry/Tapestry5HowToStreamAnExistingBinaryFile
http://wiki.apache.org/tapestry/Tapestry5HowToCreateADynamicPDF
This idea works for anything you may want to return that isn't an HTML
page. You still need the page class file, but you do not need a .tml file.
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