August 2005 - Zope - Zope lists

ZEO on Windows
by michael nt milne 24 Aug '05

24 Aug '05

Hi Does anyone know if the 2.0.5 windows release of Plone includes ZEO? Is there any configuration information on this? Also does Zope 2.8 for linux have ZEO as standard. Finally, if you don't run ZEO does this mean that Zope can only handle one request at a time? Thanks

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Re: [Zope] AssertionError after update to Zope 2.8.1
by Tim Peters 24 Aug '05

24 Aug '05

[Ricardo Newbery] > Oh so close... > > Migrated from Zope 2.7.2 to 2.8.1 > Updated all the Catalog instances according to the instructions. > Fixed a few outdated products. > > Then just for kicks, I tried to update the Python scripts by visiting > the /manage_addProduct/PythonScripts/recompile url. After about a > minute, it threw up an error page. This is what shows up in the > log... > > > 2005-08-21T01:56:45 ERROR txn.170046464 Error in abort() on manager <Connection at 0956724c> > Traceback (most recent call last): > File "/Zope-2.8/lib/python/transaction/_transaction.py", line 456, in _cleanup > File "/Zope-2.8/lib/python/ZODB/Connection.py", line 348, in abort > File "/Zope-2.8/lib/python/ZODB/Connection.py", line 360, in _abort > AssertionError > ------ > 2005-08-21T01:56:45 ERROR Zope.SiteErrorLog > http://someurl.com/manage_addProduct/PythonScripts/recompile > Traceback (most recent call last): > File "/Zope-2.8/lib/python/ZPublisher/Publish.py", line 119, in publish > File "/Zope-2.8/lib/python/Zope2/App/startup.py", line 215, in commit > File "/Zope-2.8/lib/python/transaction/_manager.py", line 84, in commit > File "/Zope-2.8/lib/python/transaction/_transaction.py", line 381, in commit > File "/Zope-2.8/lib/python/transaction/_transaction.py", line 379, in commit > File "/Zope-2.8/lib/python/transaction/_transaction.py", line 424, in _commitResources > File "/Zope-2.8/lib/python/ZODB/Connection.py", line 462, in commit > File "/Zope-2.8/lib/python/ZODB/Connection.py", line 483, in _commit > AssertionError > > ... Note that someone else (I think) opened a Collector issue against what appears to be a very similar problem: http://www.zope.org/Collectors/Zope/1874 As I noted there, it would be helpful if someone who sees this problem added some prints at the point of the failing assert, so we could at least learn the type/class of the object without an oid.

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manage_afterAdd quirks
by Philip Jägenstedt 24 Aug '05

24 Aug '05

Hello! I'm trying to write a small filesystems based product which I'm calling MovieWorld. The main class (MovieWorld) inherits from ObjectManager and is to be configured to contain a folder with images and a index_html page template (so that it can be edited via ZMI if needed). Setting these things up in a manage_afterAdd works fine as long as I'm just adding new products, but renaming or copying will cause manage_afterAdd to be called again, which fails because the objects to be created already exist. What should I do? The obvious solution is to check for existance of the objects and only add them if they don't exist, which is what I tried. This worked for the folder called "images", but I was using hasattr(self,'images') to check to existance, so it worked by coincidence. What I mean is it works only if there is no object called images aquired, which means it also mus not exist anywhere along the aquire path. For this reason, hasttr(self,'index_html') will return true, and the index_html template will not be added at all. It seems I need one of three things: 1. A better way to add images and a template altogether. 2. A hook which is only called once, when the object is first created. 3. A method to check if the objects exist in the newly added item directly, not aquired. Help! // Philip Jägenstedt

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http post from java applet
by Jeremiah White 23 Aug '05

23 Aug '05

I am looking at a product from radinks.com that is an applet that allows you to drag and drop files into the browser window and then uses HTTP post to upload. In order to upload files, though, you must be logged into my site. Even after you have logged in, the applet doesn't seem to have the authentication that the window in which it is embedded has. How can I make the applet (or the script it calls) have the same privileges as the browser window it is embedded in? I can pass a parameter in as a query string and I have done that to pass in _ZopeId. I've been trying to set the browser id in the script as that of the browser it is called from by passing _ZopeId in the query string, but I'm having no luck. I'm afraid I may be looking in the wrong place now, so any help would be much appreciated. Thanks!

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Failure to install PIL on a Linux server
by Dominik Wezel 23 Aug '05

23 Aug '05

Hi all I'm aware that PIL is not easy to install, primarily due to the prerequisites. I've studied and applied as well as possible http://mail.zope.org/pipermail/zope/2002-December/128364.html and http://www.zope.org/Members/regebro/PIL_zope/, both of which seem slightly medieval: the setup and test processes are very different today. I didn't find any other information pertaining to my problem, so I considered this posting. I hope I'm on the right list here. Setup ===== - debian 3.1 (sarge) on a UML (user mode linux) dedicated ZOPE instance - /usr/src/Imaging-1.1.5 (from Imaging-1.1.5.tar.gz, 2005-03-28) - /usr/src/freetype-2.1.10 (from freetype-2.1.10.tar.bz2, 2005-06-12) - /usr/src/jpeg-6b (from jpegsrc.v6b.tar.gz, 2005-03-28) Symptom ======= root@zope-server:/usr/src/Imaging-1.1.5# python setup.py build_ext -i |running build_ext |-------------------------------------------------------------------- |PIL 1.1.5 BUILD SUMMARY |-------------------------------------------------------------------- |version 1.1.5 |platform linux2 2.3.5 (#1, Apr 22 2005, 15:12:06) | [GCC 3.3.5 (Debian 1:3.3.5-8)] |-------------------------------------------------------------------- |*** TKINTER support not available |--- JPEG support ok |--- ZLIB (PNG/ZIP) support ok |--- FREETYPE2 support ok |-------------------------------------------------------------------- |To add a missing option, make sure you have the required |library, and set the corresponding ROOT variable in the |setup.py script. | |To check the build, run the selftest.py script. root@zope-server:/usr/src/Imaging-1.1.5# python selftest.py |***************************************************************** |Failure in example: _info(Image.open("Images/lena.jpg")) |from line #24 of selftest.testimage |Exception raised: |Traceback (most recent call last): | File "./doctest.py", line 499, in _run_examples_inner | exec compile(source, "<string>", "single") in globs | File "<string>", line 1, in ? | File "./selftest.py", line 21, in _info | im.load() | File "PIL/ImageFile.py", line 180, in load | d = Image._getdecoder(self.mode, d, a, self.decoderconfig) | File "PIL/Image.py", line 328, in _getdecoder | raise IOError("decoder %s not available" % decoder_name) |IOError: decoder jpeg not available |1 items had failures: | 1 of 55 in selftest.testimage |***Test Failed*** 1 failures. |*** 1 tests of 55 failed. It looks like JPEG support is enabled, but still the selftest doesn't find the decoder. Additional Info =============== In /usr/src/Imaging-1.1.5/setup.py # -------------------------------------------------------------------- # Library pointers. # <snip> FREETYPE_ROOT = "/usr/local/lib" JPEG_ROOT = "/usr/lib" TIFF_ROOT = None ZLIB_ROOT = None TCL_ROOT = None root@zope-server:/usr/src/Imaging-1.1.5# ls /usr/local/lib |total 4168 |-rw-r--r-- 1 root staff 2544356 Jun 27 18:08 libfreetype.a |-rwxr-xr-x 1 root staff 824 Jun 27 18:08 libfreetype.la |lrwxrwxrwx 1 root staff 20 Jun 27 18:08 libfreetype.so -> libfreetype.so.6.3.8 |lrwxrwxrwx 1 root staff 20 Jun 27 18:08 libfreetype.so.6 -> libfreetype.so.6.3.8 |-rwxr-xr-x 1 root staff 1546147 Jun 27 18:08 libfreetype.so.6.3.8 |-rw-r--r-- 1 root staff 162324 Aug 23 09:37 libjpeg.a |drwxr-sr-x 2 root staff 80 Jun 27 18:08 pkgconfig |drwxrwsr-x 3 root staff 80 Jun 17 16:05 python2.3 root@zope-server:/usr/src/Imaging-1.1.5# ls /usr/local/lib |<snip> |-rw-r--r-- 1 root root 161160 Mar 2 13:26 libjpeg.a |-rw-r--r-- 1 root root 802 Mar 2 13:26 libjpeg.la |lrwxrwxrwx 1 root root 17 Aug 18 15:26 libjpeg.so -> libjpeg.so.62.0.0 |lrwxrwxrwx 1 root root 17 Jun 17 17:54 libjpeg.so.62 -> libjpeg.so.62.0.0 |-rwxr-xr-x 1 root root 140022 Jun 17 17:54 libjpeg.so.62.0.0 |<snip> root@zope-server:/usr/src/Imaging-1.1.5# ld -L/usr/lib -ljpeg -nostdlib |ld: warning: libc.so.6, needed by /usr/lib/libjpeg.so, not found (try |using -rpath or -rpath-link) |ld: warning: cannot find entry symbol _start; not setting start address |/usr/lib/libjpeg.so: undefined reference to `getenv(a)GLIBC_2.0' |/usr/lib/libjpeg.so: undefined reference to `free(a)GLIBC_2.0' |/usr/lib/libjpeg.so: undefined reference to `fread(a)GLIBC_2.0' |/usr/lib/libjpeg.so: undefined reference to `sprintf(a)GLIBC_2.0' |/usr/lib/libjpeg.so: undefined reference to `fflush(a)GLIBC_2.0' |/usr/lib/libjpeg.so: undefined reference to `memset(a)GLIBC_2.0' |/usr/lib/libjpeg.so: undefined reference to `sscanf(a)GLIBC_2.0' |/usr/lib/libjpeg.so: undefined reference to `memcpy(a)GLIBC_2.0' |/usr/lib/libjpeg.so: undefined reference to `malloc(a)GLIBC_2.0' |/usr/lib/libjpeg.so: undefined reference to `exit(a)GLIBC_2.0' |/usr/lib/libjpeg.so: undefined reference to `fprintf(a)GLIBC_2.0' |/usr/lib/libjpeg.so: undefined reference to `stderr(a)GLIBC_2.0' |/usr/lib/libjpeg.so: undefined reference to `fwrite(a)GLIBC_2.0' |/usr/lib/libjpeg.so: undefined reference to `ferror(a)GLIBC_2.0' root@zope-server:/usr/src/Imaging-1.1.5# ld -L/usr/lib -ljpeg -nostdlib -Bshareable root@zope-server:/usr/src/Imaging-1.1.5# Maybe the problem is that libjpeg is a shareable library? How can I install it otherwise? READMEs coming along with the source are not expanding on alternatives. Non-topics ========== I'm aware that debian has a ZOPE-Package, even a PIL-Package, but there are various reasons not to use them here, but rather to setup the whole stuff manually. Thanks for any help! -- Gruß, Dominik Wezel --------------------------------------------- DATENPARK Badenerstraße 69, Postfach CH-8026 Zürich Tel +41 1 299 33 66 Fax +41 1 299 33 91 dominik.wezel(a)datenpark.ch www.datenpark.ch ---------------------------------------------

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Re: FW: [ZODB-Dev] python types question
by Jürgen Herrmann 23 Aug '05

23 Aug '05

thanks tim! my mistake... regards, juergen herrmann [ Tim Peters wrote:] > [fwd'ing private msg, since it appears to have been intended to > go to the list] > > -----Original Message----- > From: Jürgen Herrmann [mailto:Juergen.Herrmann@XLhost.de] > Sent: Tuesday, August 23, 2005 7:31 AM > To: Tim Peters > Subject: RE: [ZODB-Dev] python types question > > hi! > > first of all, thanks to everybody who replied to my message. > i experimented a bit with OOBTree and OOTreeSet. OOBTree is surely > fine for the mapping part of what i need. > But i think OOTreeSet doesn't fit as a replacement for PersistentList > because i need the oids in the list to maintain their order. i want > to be able to change the order of oids in the lists, too. > > any further hints what to use instead of OOTreeSet then? > > regards, juergen herrmann > > > _______________________________________________________________________ > >>> XLhost.de - eXperts in Linux hosting << > > Jürgen Herrmann > Bruderwöhrdstraße 15b, DE-93051 Regensburg > > Fon: +49 (0)700 XLHOSTDE [0700 95467833] > Fax: +49 (0)721 151 463027 > WEB: http://www.XLhost.de > > _______________________________________________ > For more information about ZODB, see the ZODB Wiki: > http://www.zope.org/Wikis/ZODB/ > > ZODB-Dev mailing list - ZODB-Dev(a)zope.org > http://mail.zope.org/mailman/listinfo/zodb-dev > _______________________________________________________________________ >> XLhost.de - eXperts in Linux hosting << Jürgen Herrmann Bruderwöhrdstraße 15b, DE-93051 Regensburg Fon: +49 (0)700 XLHOSTDE [0700 95467833] Fax: +49 (0)721 151 463027 WEB: http://www.XLhost.de

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SQLConnectionIds
by Nicholas Wieland 23 Aug '05

23 Aug '05

Again, this problem is making me mad :) This is a simple TTW PageTemplate I'm using: <html> <body> <ul tal:repeat="dba here/SQLConnectionIDs"> <li tal:content="dba"> placeholder </li> </ul> <body> </html> This works without any problem, returning a list of tuples. The same template in a FS based product raises a site error: Unauthorized: You are not allowed to access 'SQLConnectionIDs' in this context (Also, an error occurred while attempting to render the standard error message.) that's not even logged. A very similar DTML file on the FS, that cycles through SQLConnectionIds, works perfectly. This is Zope 2.7 on Windows. Is this a Zope bug ? TIA, ngw --------------------------------- Yahoo! Messenger: chiamate gratuite in tutto il mondo

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Accessing Zope site through network
by Saura Ramachandran 23 Aug '05

23 Aug '05

Hello, I am very new to Zope. I managed to install zope in my machine. Now I am not able to access this site through a network. It is giving connection refused error. Please tell me what to do. Any pointers will be greatly appreciated. Thanks, Saura.

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max 2 levels of indirection?
by Sean Dunn 22 Aug '05

22 Aug '05

I'm running Zope 2.0.7, and I'm having a problem.. Consider me a newbie, as I've only been using Zope for a few weeks. After boiling the problem down to a test case, it seemed that I couldn't have a DTML method call a DTML method which then calls a Python script. But then I realized it was a more general problem of max number levels of indirection.. So I can't have a DTML->DTML->DTML or DTML->DTML->PythonScript. Is this a bug? When I try this, I get a Name Error, which says that the name of the 3rd level object is not defined. Here's an example: DTML Method TestA: <dtml-var expr="TestB()"> DTML Method TestB: <dtml-var expr="TestC()"> DTML Method TestC: Test C has run. If I view TestA, I get the NameError that TestC doesn't exist. If I view TestB, I get the output "Test C has run". All objects are in the same folder. Is there some namespace weirdness that I don't understand? Thanks, Sean

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Help me with acquisition and custom types
by Mark Gibson 22 Aug '05

22 Aug '05

I've got a problem... I've created two objects, A folderish object called myfolder, and a document-type object called mydocument. Here's how my classes are defined... class mydocument( CatalogAware, Implicit, Persistent, RoleManager, PropertyManager, Item): class myfolder( CatalogAware, Implicit, Persistent, RoleManager, PropertyManager, Folder) So, say I have a hierarchy like this... / /ObjectA /folder /folder/mydocument ( an instance of mydocument) /folder/myfolder (an instance of myfolder) /folder/myfolder/ObjectA Ok.. I want to be able to call http://mysite/folder/mydocument/ObjectA - this works fine http://mysite/folder/myfolder/ObjectA - this works fine http://mysite/folder/myfolder/mydocument/ObjectA - this returns the ObjectA at '/ObjectA', I'd like it to return ObjectA at '/folder/myfolder/ObjectA' Any ideas how I would go about making this happen? -- Mark Gibson <mark(a)kaivo.com>

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