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IE problems when response headers are changed inside the controller
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León Domingo  
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 More options Oct 11 2012, 7:51 am
From: León Domingo <leon.domi...@ender.es>
Date: Thu, 11 Oct 2012 04:51:41 -0700 (PDT)
Local: Thurs, Oct 11 2012 7:51 am
Subject: IE problems when response headers are changed inside the controller
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Hi people,

I have this controller method:

        @expose()
    def get(self, codigo):

        aa = dbs.query(ArchivosAsociados).\
            filter(ArchivosAsociados.codigo == codigo).first()

        if aa.caducidad and aa.caducidad > dt.datetime.now():
            content, mt, file_name = SapnsDoc.download(aa.id_recurso)
            response.headerlist.append(('Content-Type', mt.encode('utf-8')))
            response.headerlist.append(('Content-Disposition',
'attachment;filename=%s' % file_name))

            return content

        else:
            redirect(url('/banco_de_recursos/recurso_caducado/',
params=dict(codigo=codigo)))

As you can see "mime-type" is "calculated" ("Content-Type" header is added
dynamically) inside the method. I've read a record from the database which
gives me the "mime-type" (mt) and "file name" (file_name). Content
(content) is read from the file itself which is stored in the hard disk.

Ok, this thing does not work on IE8 or IE7. Chrome, FF, Opera, Safari or
even IE9 do the right thing.

Any suggestion?

Thanks in advance

León


 
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Alessandro Molina  
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 More options Oct 11 2012, 6:12 pm
From: Alessandro Molina <alessandro.mol...@gmail.com>
Date: Fri, 12 Oct 2012 00:12:22 +0200
Local: Thurs, Oct 11 2012 6:12 pm
Subject: Re: [TurboGears] IE problems when response headers are changed inside the controller
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mt.encode('utf-8') might end up being wrong, HTTP Headers should only
be latin1 if I remember correctly.
Even though, probably, there aren't mime types which contain utf8 characters.

Also you should be able to use response.content_type =
'yourcontenttype' and response.headers['Content-Disposition']=...
instead of relying on response.headerlist.append, which is a bit
easier to read and write.


 
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León Domingo  
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 More options Nov 1 2012, 6:00 pm
From: León Domingo <leon.domi...@ender.es>
Date: Thu, 1 Nov 2012 22:59:51 +0100
Local: Thurs, Nov 1 2012 5:59 pm
Subject: Re: [TurboGears] IE problems when response headers are changed inside the controller
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Hi again,
I tested it and I think it works.

The reason to encode (.encode('utf-8')) is that those mime types come from
a database and SQLAlchemy give them to me as unicode, so I have to encode
them. Now I do the same thing but using "latin1" coding instead of "utf-8".

Thanks, Alessandro

León Domingo

Ender - Factoría de Software
leon.domi...@ender.es <jestre...@ender.es>
Avda. Cerro del Águila, 7. S23 - 2ª Planta
28703 S.S. de los Reyes (MADRID)
Tlf. 902 01 44 01

<http://www.ender.es/>
<http://www.facebook.com/home.php?#%21/pages/San-Sebastian-de-los-Reye...>
* <http://www.ender.es>*

On 12 October 2012 00:12, Alessandro Molina <alessandro.mol...@gmail.com>wrote:


 
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