November 2000 - Zope

ZServer serving CGI by itself
by Fred Wilson Horch 06 Nov '00

06 Nov '00

Hi folks, I'm evaluating Zope. We have existing CGI programs (such as mailman) that we'd like to run, but we don't want to hassle with running two web servers. So, my question is, how do you run CGI programs from ZServer itself? I know that I can run Apache (or a number of other web servers) to serve CGI programs. I don't want to do that. I want to run just one web server -- ZServer. I haven't seen any documentation on how to add CGI capability to Zope. Before I spend my time writing a product or external method that allows me to call CGI programs from inside Zope, has anyone else already done this? Thanks for the bandwidth, Fred P.S. If anyone has implementation ideas, I'd like to hear them. I assume I can just write a Python function to pass along standard in and the environment variables to the CGI program, execute it in a shell and collect standard out back. BTW, this will be running exclusively under Linux. P.P.S. What is the deal with mailman? Why isn't mailman integrated with Zope yet?

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Does anyone know if the RPMs work with Caldera?
by Kevin Schaefer 05 Nov '00

05 Nov '00

Does anyone know if the RPMs work with Caldera?

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Where is the code?
by Red Pineseed 05 Nov '00

05 Nov '00

Hi all, I have played with Zope and got everything working. It is however not clear to me how the code (DTML and so on) is merged into Zope and where it is kept. Would gurus out there point this to me? thanks. Philip

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catalog DTML Document
by Wolfgang Strobl 05 Nov '00

05 Nov '00

"Finding"a bunch of DTML Documents into a Zcatalog is easy. But how to do that programmatically? I haven't even found a way of doing that for a single DMTL Document. -- Wolfgang Strobl

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Zope for medium/large sites
by Tiago Antão 05 Nov '00

05 Nov '00

Hi! We're considering using zope for a somewhat large project: It's a VPN for arround 10.000 institutions ( >100.000 users expected, up to 1.500.000 users possible, but not likely). Hundreds of simultaneous connections expected. The database has to support >100.000 users and a LOT of content (more than 1000 virtual hosts, along with a very big main site). The question is: Is zope up to this? And yes, the necessary hardware is available 8-). We've used Zope for smallish internal projects, but for something as this... Best regards, Tiago

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Disabling SiteAccess/SiteRoot ..
by Jørgen Skogstad 05 Nov '00

05 Nov '00

Kindest.. Of course I did something wrong. ;) I need to disable the SiteRoot i implemented.. because right now all is /&#% up.. ;) Have you got any information about this? I am running this startup script as of now.. but it does nothing (esp. thinking of the env. variable that was stated on www.zope.org) #! /bin/sh #exec 2>&1 SUPPRESS_ACCESSRULE=yahoo export SUPPRESS_ACCESSRULE PATH=$PATH:/usr/local/bin PYTHONPATH=$PYTHONPATH:/usr/local/lib/python1.5/site-packages reldir=/usr/local/zope/Zope-2.2.1-solaris-2.6-sparc/ PYTHONHOME=`cd $reldir; pwd` export PYTHONHOME export PYTHONPATH exec /usr/local/zope/Zope-2.2.1-solaris-2.6-sparc/bin/python \ $PYTHONHOME/z2.py \ -a 'localhost' \ -u 'zope' \ -m '' \ -f '' \ -p '' \ -F '8989' \ -d '' \ -w '' \ -D \ -Z '' "$@" Would apriciate any input! Kindest, Jørgen Skogstad

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Problems with LoginManager 0.8.8b1
by Jeff Hoffman 05 Nov '00

05 Nov '00

Hello, I am having an odd problem with LoginManager 0.8.8b1 and am writing the list in the hopes that someone can either help me out, or confirm that I've encountered a bug. I am running Zope 2.2.2 with Python 1.5.2 on a Linux box. I installed LoginManager as described, and compiled DynPersist and so forth for ZPatterns. All seems to be working well. I created a temporary folder called 'sandbox', inside of which I instantiated a LoginManager. In its UserSource (a Generic User Source), I created four Python Methods (with Python Methods v0.1.7): --- userAuthenticate <params>self, REQUEST, username, password</params> if username == 'XXX' and password == 'XXX': return 1 else: return 0 --- userExists <params>self, REQUEST, username</params> if username == 'XXX': return 1 else: return 0 --- userDomains <params>self, REQUEST, username</params> return [] --- userRoles <params>self, REQUEST, username</params> if username == 'XXX': return ['Manager', 'Member'] else: return ['Member'] Once done, I pointed my browser to http://myhost/sandbox/index_html. This method is a standard DTML Method, inluding standard_html_header and footer and putting some text in the middle. I get the following error: Traceback (innermost last): File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/zope/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: Traversable) File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 171, in publish File /usr/local/zope/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: index_html) File /usr/local/zope/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: index_html) File /usr/local/zope/lib/python/OFS/DTMLMethod.py, line 172, in __call__ (Object: index_html) File /usr/local/zope/lib/python/DocumentTemplate/DT_String.py, line 528, in __call__ (Object: index_html) KeyError: standard_html_header Zope can't find standard_html_header. I am guessing the acquisition path is getting hosed somewhere along the way. If I simply delete acl_users from sandbox (my LoginManager), index_html works fine. Moreover, it is not just standard_html_header that I can't acquire. I created a DTML Method called foo, and could not acquire it, either. Any ideas? --Jeff --- Jeff K. Hoffman 704.849.0731 x108 Chief Technology Officer mailto:jeff.hoffman@goingv.com Going Virtual, L.L.C. http://www.goingv.com/

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university portal
by Lee 05 Nov '00

05 Nov '00

Hi, I'm another Zope newbie with a few questions. My appologies if this message is being sent to the wrong mailing list. I'm a final year student doing a project to create a course/personal management system for my university. I understand there's quite a lot of similar work going on in this field already. I aim to create a database to store student information in (using mySQL or Zope?) which the user (the lecturer) can add content to (details of grades, etc) via a web browser and use for bulk manipulation of data... sending email amongst other things. In addition, I hope to provide a 'wizard' (in a browser window) to provide facilities for uploading lecture material, news, etc. to the course web page. Going through Zope's 'Elvis' tutorial this seems possible. [Q] Is it possible to present a user with various web forms to input information (say, a news article with headline & content) that once submitted will be displayed on the page in a suitable format? I think Zope is capable of this... is Python/anything required. Are there any examples I can look at? I am in the process of reading the online Zope book - if anyone has any advice for reading material, I would be grateful to hear it :-) [Q] There are a lot of Zope products available - am I right in thinking that, say a 'Zope Discussion Board' product, could be download and integrated into a Zope-powered web-site? i.e. Are Zope products 'plug and play' TM? ;-o Thanks for the bandwidth, Lee

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[ANN] Zope 2.2 patch for cDocumentTemplate/Acquisition bug
by Dieter Maurer 05 Nov '00

05 Nov '00

Appended is a patch for the cDocumentTemplate/Acquisition bug. Usually, this bug manifests itself by an "AttributeError: __call__" for a folder object. The usual context is: DTML Document: ..... <dtml-with folder>  .... </dtml-with> ..... The patch modifies "C" code. This means you need a Zope source distribution to apply it and then you must regenerate Zope. Almost surely, the patch is not yet complete: The code in "cDocumentTemplate.c" looks like (Python emulating "C" code): if callable(o): if hasattr('isDocTemp') and o.isDocTemp: o= o(None,md) else: o= o() The remaining problem is that 'isDocTemp' might be acquired and does not belong to "o.__call__". In this case, "o" might be called with the wrong number of parameters. I would expect, that the problem disappears, when the "isDocTemp" test is performed with "o.aq_base" rather than "o". But I am not sure. Maybe, an acquisition expert can look into this remaining issue. Dieter ------------------------------------------------------------------------ --- lib/Components/ExtensionClass/:Acquisition.c Sat Oct 7 20:40:53 2000 +++ lib/Components/ExtensionClass/Acquisition.c Sat Nov 4 21:10:04 2000 @@ -1391,6 +1391,31 @@ return r; } + +/* DM: adding "AqCallable_Check" */ +static int +aqCallable(PyObject *o) { + if (isWrapper(o)) { + PyObject *call; + + UNLESS(call=PyObject_GetAttr(o,py__call__)) { + PyErr_Clear(); + return 0; + } + Py_DECREF(call); return 1; + } else + return PyCallable_Check(o); +} + +static PyObject * +AqCallable_Check(PyObject *ignored, PyObject *args) +{ + PyObject *o; + + UNLESS (PyArg_ParseTuple(args, "O", &o)) return NULL; + return PyInt_FromLong((long) aqCallable(o)); +} + static struct PyMethodDef methods[] = { {"aq_acquire", (PyCFunction)module_aq_acquire, METH_VARARGS|METH_KEYWORDS, "aq_acquire(ob, name [, filter, extra, explicit]) -- " @@ -1412,6 +1437,10 @@ {"aq_chain", (PyCFunction)module_aq_chain, METH_VARARGS, "aq_chain(ob [, containment]) -- " "Get a list of objects in the acquisition environment"}, + /* DM */ + {"callable", (PyCFunction)AqCallable_Check, METH_VARARGS, + "callable(ob) -- " + "return true iff the object is callable"}, {NULL, NULL} }; --- lib/python/DocumentTemplate/:cDocumentTemplate.c Sat Jul 29 11:24:34 2000 +++ lib/python/DocumentTemplate/cDocumentTemplate.c Sat Nov 4 21:11:11 2000 @@ -95,14 +95,35 @@ static PyObject *py_Unauthorized_fmt, *py_validate; static PyObject *py__push, *py__pop, *py_aq_base; -/* ----------------------------------------------------- */ - static void PyVar_Assign(PyObject **v, PyObject *e) { Py_XDECREF(*v); *v=e;} #define ASSIGN(V,E) PyVar_Assign(&(V),(E)) #define UNLESS(E) if (!(E)) #define UNLESS_ASSIGN(V,E) ASSIGN(V,E); UNLESS(V) #define OBJECT(O)(((PyObject*)O)) +/* ----------------------------------------------------- */ +/* DM: callable */ +static int (*callable)(PyObject *o); + +static PyObject *aq_callable; + +static int aq_callable_check(PyObject *o) { + PyObject *result= PyObject_CallFunction(aq_callable,"O",o); + int callable= PyInt_AsLong(result); + Py_DECREF(result); + return callable; +} + +static void init_callable() { + PyObject *aq= PyImport_ImportModule("Acquisition"); + if(aq && + (aq_callable= PyObject_GetAttrString(aq,"callable"))) + callable= aq_callable_check; + else callable= PyCallable_Check; +} + +/* ----------------------------------------------------- */ + typedef struct { PyObject_HEAD PyObject *inst; @@ -370,7 +391,7 @@ { dt=0; - if (PyCallable_Check(e)) + if ((*callable)(e)) { /* Decide whether we have a document template */ if (rr=PyObject_GetAttr(e,py_isDocTemp)) @@ -917,6 +938,9 @@ PyDict_SetItemString(d, "__version__", PyString_FromStringAndSize(rev+11,strlen(rev+11)-2)); + + /* DM */ + init_callable(); if (PyErr_Occurred()) Py_FatalError("can't initialize module cDocumentTemplate");

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Re: [Zope] Obtaining just the filename for multiple file fields in an add form form
by Dieter Maurer 05 Nov '00

05 Nov '00

Darin Lee writes: > ... accessing the name of an uploaded file ... This is an FAQ (--> searchable archive). Uploaded files are "ZPublisher.HTTPRequest.FileUpload" objects. From their source documentation: File upload objects are used to represent file-uploaded data. File upload objects can be used just like files. In addition, they have a 'headers' attribute that is a dictionary containing the file-upload headers, and a 'filename' attribute containing the name of the uploaded file. Dieter

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