Re: [Zope] Displaying PIL Images in Zope Templates
On Thu, Sep 18, 2008 at 08:22:37AM +0200, Nico Grubert wrote: > > > The renders "". > > > How can I show the image? > > > Call its tag method. > > > > > > Hi Paul, > > how is the susi going? ;-) Ah, I sold mine years ago. Nowadays I mostly just play bass. And you? :) > I tried but I get the > following error: > --- > Exception TypeTraversalError > Exception Value (, 'tag') Whoops, sorry, I didn't realize these were PIL images, I thought they were OFS.Image or some such. But I see you already got the solution. - PW -- Paul Winkler http://www.slinkp.com ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Displaying PIL Images in Zope Templates
> Instead of generating the image on the call to your ZPT you form an src="/some/url/that/makes/my/image?foo=bar&baz=bat"> e.g. in order to > generate the right image. Got it. The magic is not to call the external method by container.createThumbnail() but use absolute URL to the external method. In the page template I have to use: Thanks for pointing me in the right direction. Regards Nico ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Displaying PIL Images in Zope Templates
> You can't do this
>
> What you need to do is associate the image with a URL so it gets
> generated when the browser processes the tag.. UNLESS it's very small
> in which case you can use the src="..." attribute to contain the data.
>
> So a PIL image should be returned by a script or external method that
> you can browse to. Headers such as Content-Type should be set to set the
> image type.
>
> Instead of generating the image on the call to your ZPT you form an src="/some/url/that/makes/my/image?foo=bar&baz=bat"> e.g. in order to
> generate the right image.
Hi Andrew
thank you for your answer.
I tried this but calling the page template only shows the image and the
other content is not shown. I guess, it has something to do with the
REQUEST.RESPONSE.setHeader('Content-Type', WEB_FORMAT) I set in the
external method.
Here is the code I use:
External method "createThumbnail":
--
def createThumbnail(self, photo):
""" create PIL image
"""
thumb_data = StringIO()
# 'thumb' is a PIL.Image.Image instance
thumb.save(thumb_data, 'JPEG')
REQUEST = self.REQUEST
REQUEST.RESPONSE.setHeader('Content-Type', 'JPEG')
return REQUEST.RESPONSE.write(thumb_data.getvalue())
Page Template "thumbnails.html":
Thumbnails
some other content...
some other content...
In the page templates I iterate over a list of image objects ("photos")
and pass a single image object to external method.
As I mentioned above, this only shows the first image and not the other
content nor the other images.
Did I miss something?
Regards
Nico
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Re: [Zope] Displaying PIL Images in Zope Templates
+---[ Nico Grubert ]-- | > > The renders "". | > > How can I show the image? | | > Call its tag method. | | > | | | Hi Paul, | | how is the susi going? ;-) | | I tried but I get the | following error: You can't do this What you need to do is associate the image with a URL so it gets generated when the browser processes the tag.. UNLESS it's very small in which case you can use the src="..." attribute to contain the data. So a PIL image should be returned by a script or external method that you can browse to. Headers such as Content-Type should be set to set the image type. Instead of generating the image on the call to your ZPT you form an e.g. in order to generate the right image. -- Andrew Milton [EMAIL PROTECTED] ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Displaying PIL Images in Zope Templates
> > The renders "". > > How can I show the image? > Call its tag method. > Hi Paul, how is the susi going? ;-) I tried but I get the following error: --- Exception Type TraversalError Exception Value (, 'tag') * Module Products.PageTemplates.Expressions, line 153, in _eval * Module zope.tales.expressions, line 124, in _eval * Module Products.PageTemplates.Expressions, line 83, in boboAwareZopeTraverse * Module zope.traversing.adapters, line 164, in traversePathElement __traceback_info__: (, 'tag') * Module zope.traversing.adapters, line 52, in traverse __traceback_info__: (, 'tag', []) TraversalError: (, 'tag') --- However, I could not find any "tag" attribute in the lists of available attributes of the PIL.Image.Image instance. dir() returns: ['_Image__transformer', '__doc__', '__getattr__', '__init__', '__module__', '_copy', '_dump', '_expand', '_makeself', '_new', 'category', 'convert', 'copy', 'crop', 'draft', 'encoderconfig', 'encoderinfo', 'filter', 'format', 'format_description', 'fromstring', 'getbands', 'getbbox', 'getcolors', 'getdata', 'getextrema', 'getim', 'getpalette', 'getpixel', 'getprojection', 'histogram', 'im', 'info', 'load', 'mode', 'offset', 'palette', 'paste', 'point', 'putalpha', 'putdata', 'putpalette', 'putpixel', 'quantize', 'readonly', 'resize', 'rotate', 'save', 'seek', 'show', 'size', 'split', 'tell', 'thumbnail', 'tobitmap', 'tostring', 'transform', 'transpose', 'verify'] No "tag" method there... :-( Regards Nico ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Displaying PIL Images in Zope Templates
On Wed, Sep 17, 2008 at 03:01:55PM +0200, Nico Grubert wrote: > Hi there > > Is it possible to show several PIL.Image.Image instances in a Zope Page > without creating a temporary Zope image object? > > I have an external method that creates a list of > PIL.Image.Image instances, e.g. >[, > > ] > > How can I display all images in a Zope page template? > > I tried > > > > > > The renders "". How can I > show the image? Call its tag method. -- Paul Winkler http://www.slinkp.com ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Displaying PIL Images in Zope Templates
Hi there Is it possible to show several PIL.Image.Image instances in a Zope Page without creating a temporary Zope image object? I have an external method that creates a list of PIL.Image.Image instances, e.g. [, ] How can I display all images in a Zope page template? I tried The renders "". How can I show the image? Thanks in advance Nico ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
