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RE: [Zope] How a method only returns the data of an image
by Dean Stautberg 11 Mar '02

11 Mar '02

I am doing something on my site which is similar to the original request in this thread (get a method to return the exact data of an Image object), except that I use it to get a random image from a folder. I used the index_html() method of Image, and I put it in a Python Script as follows: request = container.REQUEST response = request.RESPONSE images = context['images'].objectValues ('Image') image = random.choice (images) response.write (image.index_html(request,response)) I don't know if this is better or worse than the suggestions mentioned already, but since it's different, I thought I would share it. I don't seem to need to set the Content-Type or Content-Length headers with this strategy, though. -Dean > >Message: 40 >From: "Trevor Toenjes" <zope(a)toenjes.com> >To: "Joel Burton" <joel(a)joelburton.com>, "Trevor Toenjes" <zope(a)toenjes.com> >Cc: <zope(a)zope.org> >Subject: RE: [Zope] How a method only returns the data of an image >Date: Mon, 11 Mar 2002 10:34:18 -0500 > >Clever. :) I think this approach will work for now. It seems the easiest >solution. >Sometimes easier is better. > >The redirect does seem to slow down the response a little. >I will revisit the whole setHeader manipulation at a later date. > >Thanks. >-Trevor > >> -----Original Message----- >> From: zope-admin(a)zope.org [mailto:zope-admin@zope.org]On Behalf Of Joel >> Burton >> Sent: Monday, March 11, 2002 10:02 AM >> To: Trevor Toenjes >> Cc: zope(a)zope.org >> Subject: Re: [Zope] How a method only returns the data of an image >> >> >> On Mon, 11 Mar 2002, Trevor Toenjes wrote: >> >> > I need to make a method act like the clone of an image. >> > Without extending the Image class...(I would like to do this in DTML or >> > python-script) >> > I am simply trying to get a method to return the exact data of an Image >> > object, so it can be used in normal HTML <IMG >> > src="myimage.jpg?somevariable">. If the Image is a method, it >> can execute >> > some logic based on the QUERY_STRING. >> > >> > example: DTML_Method "myimage.jpg" >> > # should look and smell like a JPG to the browser (but also execute some >> > logic without >> > # effecting the image header data) >> > ---- >> > | <dtml-call "RESPONSE.setHeader('Content-type', 'image/jpeg')"> >> > | <dtml-var expr="therealimage.data"> >> > | <dtml-var somelogic> >> > ---- >> > But this doesn't return the proper data or Content-Length: >> > "therealimage" is a standard Zope Image object. >> >> One very easy solution is to have your script just redirect to the object. >> <dtml-call "RESPONSE.redirect(...)"> >> >> Advantages: >> >> * The user's browser can take advantage of their local cached copy, if >> they have one, and any proxy servers can take advantage of their local >> cached copy, if they have one, of the image. If there's a query as part of >> the URL, many caching mechanisms won't show a cached version. >> >> Disadavantages: >> >> * User can see the real image URL (which might be a problem is your script >> is meant to check credetials before presenting it) >> >> * Two HTTP requests rather than one (but would still be faster in most >> cases because of the caching) >> >> >> Otherwise, you could get the image size with therealimage.get_size() >> and put this in the header. >> >> Anyone: is the a call to create the header for an image correctly by >> itself? Looking briefly through Image.py, I didn't see it. >> >> -- >> >> Joel BURTON | joel(a)joelburton.com | joelburton.com | aim: >> wjoelburton >> Independent Knowledge Management Consultant >> __________________________________________________ Do You Yahoo!? Try FREE Yahoo! Mail - the world's greatest free email! http://mail.yahoo.com/

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error messages
by Shilpa Shenvi 11 Mar '02

11 Mar '02

Hello, When I start up Zope on my Windows 95 system, some messages get sent to a DOS window. When there are import errors, however, I cannot always trace all of them because they are not retained in the window' s buffer. Is there an easy way to get these messages into some other file? Is there a way of increasing the window's buffer so that even if the messages are sent here, they are not quickly scrolled out? Thank you, Shilpa

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by �� 11 Mar '02

11 Mar '02

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Re: LDAPUserFolder question
by mbagepll＠memphis.edu 11 Mar '02

11 Mar '02

thanks Jens, that helped Madhavi

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How a method only returns the data of an image
by Trevor Toenjes 11 Mar '02

11 Mar '02

I need to make a method act like the clone of an image. Without extending the Image class...(I would like to do this in DTML or python-script) I am simply trying to get a method to return the exact data of an Image object, so it can be used in normal HTML <IMG src="myimage.jpg?somevariable">. If the Image is a method, it can execute some logic based on the QUERY_STRING. example: DTML_Method "myimage.jpg" # should look and smell like a JPG to the browser (but also execute some logic without # effecting the image header data) ---- | <dtml-call "RESPONSE.setHeader('Content-type', 'image/jpeg')"> | <dtml-var expr="therealimage.data"> | <dtml-var somelogic> ---- But this doesn't return the proper data or Content-Length: "therealimage" is a standard Zope Image object. Any help is greatly appreciated... -Trevor

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VirtualHost Monster
by Wayne Pascoe 11 Mar '02

11 Mar '02

Hi all, I'm trying to setup a virtual host monster to handle localhost. I've setup the following rewrite stuff from the zope site's advice at http://www.zope.org/Members/Jace/apache-vhm : <VirtualHost *> RewriteEngine On RewriteCond %{HTTP_HOST} ^.*:80$ RewriteRule ^/(.*) \ http://127.0.0.1:8080/VirtualHostBase/http/%{HTTP_HOST}/$1 [L,P] </VirtualHost> I also created a folder under the root folder called localhost and added a virtual host monster to the root folder. Going to http://localhost/ shows me the normal Zope Quickstart Page. It doesn't display the index_html from the localhost folder. Going to http://localhost/localhost/ does show me the index_html contents. Any idea what I'm missing here and what needs to be done so that going to http://localhost/something displays /something from within the localhost folder in zope ? TIA, -- Wayne Pascoe <wayne.pascoe(a)ehsrealtime.com> The price of freedom is eternal vigilance - Thomas Jefferson

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ZCatalog question... possible bug
by Andrew Sydelko 11 Mar '02

11 Mar '02

I'm using ZCatalogs and I seem to have come upon either a bug or a feature that I'm not liking. I have these three items in cataloged: /company/101578039896 /company/101578039896/101578056020 /company/101578039896/101578050712 Each is a folder with properties. The first one has a property called latestRevision. The second and third objects don't have the latestRevision property. When I add a meta_data column (latestRevision) for the catalog, all three objects get the latestRevision property that the first object has. (In other words, it seems that the 2nd and 3rd objects are inheriting properties from the folder above them.) It doesn't seem like it should work that way. Any ideas? --andy.

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Is there any Microsoft SQL Server native driver for Zope?
by Nicolas Rodriguez 11 Mar '02

11 Mar '02

I'll like to migrate my JDBC driver source code to Zope in order to use a native Microsoft SQL Server connection (using TCP/IP) but I don't want to start from scratch. Is there any Microsoft SQL Server native driver for Zope (pre-alpha, alpha, beta, etc)? I looked in Zope website and the only thing I found is a ODBC Database Adapter. TIA, Nicolas.-

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Default Permissions
by Antonio Beamud Montero 11 Mar '02

11 Mar '02

Hello again: I have set some permissions over differents methods and I have assigned default permissions over different local roles with setPermissionDefault: security.setPermissionDefault('get_user_path',('MyRole',)) At this point all works ok, but when I check the "Security" tab in that object the local roles appears, but this default permissions assigned doesn't appear... What happens here? Thanks. -- Microsoft merges technologoies: Windows CE + Windows ME + Windows NT = Windows CEMENT ---- Antonio Beamud Montero Agora Systems S.A. http://www.agoratechnologies.com

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R: [Zope] MSword-webdav question
by Zanotti Michele 11 Mar '02

11 Mar '02

In my tests with MSWord 2000 (9.0.2812) and Zope 2.5.0, I have this more regular behaviour: after I have modified a document if I reopen it (after a very short time), it is read-only, if I close and reopen it, everything is ok. Michele > -----Messaggio originale----- > Da: Juergen R. Plasser / Hexagon [mailto:plasser@hexagon.at] > Inviato: lunedì 11 marzo 2002 10.52 > A: Zope > Oggetto: Re: [Zope] MSword-webdav question > > > --On Freitag, 08. März 2002 18:36 +0100 Zanotti Michele > <zanotti.m(a)apss.tn.it> wrote: > > > Hi all > > I have Zope 2.5 (started with option: W -9800) on win2k and > Office XP. > > I can open/read/modify MSWord documents via WebFolder, but if I > > open-modify-save-close a document, and then I reopen it, it appears > > read-only and only after some time I can reopen and modify it. Can > > anyone help me to understand what happens after I modify a document > > the first time and why it remains locked for some time and > what unlock > > it? Michele > > > > I have experienced the same behaviour on our Zope 2.5 (no > beta, Linux) with > option W -9800 and Word 2000/2002. > > Juergen > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://lists.zope.org/mailman/listinfo/zope > ** No cross > posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope-dev ) >

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