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python method's self parameter - calling from DTML with additional args
by Lee 23 Jan '01

23 Jan '01

Hi, I've got a problem with displaying output from one of my python methods, which has 'self' as one of its input parameters. I have a DTML method, which sets up a table using one Python method to create the table headers (the first row) and another Python method to create the table data (one row per result set). I think my problem can be solved (maybe) by asking how to call a python method from DTML when 'self' is one of the arguments expected... Here's a rough idea of my DTML method: <table> <tr> <dtml-let classcode="52.225"> * just for testing the 2nd python method directly <dtml-var index_table_headers> * python method returning first row </tr> <dtml-in get_matrics_from> *return a list of matric numbers (will be used as an argument for next python method). <tr> *** what here to get result(s) from 'final' method using matric and classcode as arguments? *** </tr> </dtml-in> </table> I've *called* other methods, where self has been in the parameter list without specifying it but in these cases it was the only parameter and there was nothing being returned. Now, most of my errors are 'not enough arguments; expected 3'. I'm hoping that some sleep, some coffee, a reply or a combination of the three will give me the answer! Thanks a lot, Lee Here's the Python method (pretty disgusting looking but I'll clean it later ;-) : Python method 'final' with parameters 'self, matric, classcode' --------------------------------------------------------------- table="class" + string.replace(`classcode`, ".", "") table=string.replace(table, "'", "") db_conn = self.Gadfly_database_connection() SQL = ("select practicals, assignments, tutorials, bonus from classes where classcode = " + classcode) result=db_conn.query(SQL) resultString = `(result[1])` length = len(resultString) # To take away the last 2 brackets i=length-1 x= "" while (i>1): x=x+resultString[length-1-i] i=i-1 # To take away the first 2 brackets newLength=len(x) j=newLength-1 y= "" while (j>1): y=y+x[j] j=j-1 # To invert the string i=len(y)-1 z="" while (i>=0): z=z+y[i] i=i-1 components = string.split(z) p = string.atoi(string.replace(components[0], ",", "")) a = string.atoi(string.replace(components[1], ",", "")) t = string.atoi(string.replace(components[2], ",", "")) b = string.atoi(components[3]) px=p ax=a tx=t bx=b db_conn = self.Gadfly_database_connection() SQL= "select " i=1 while (i<=p): SQL = SQL + "p" + `i` + ", " i=i+1 i=1 while (i<=a): SQL = SQL + "a" + `i` + ", " i=i+1 i=1 while (i<=t): SQL = SQL + "t" + `i` + ", " i=i+1 i=1 while (i<=b): SQL = SQL + "b" + `i` + ", " i=i+1 SQL= SQL + " uname, fname, lname from " + table + " where matric = " + matric result=db_conn.query(SQL) resultString = `(result[1])` length = len(resultString) # To take away the last 2 brackets i=length-1 x= "" while (i>1): x=x+resultString[length-1-i] i=i-1 # To take away the first 2 brackets newLength=len(x) j=newLength-1 y= "" while (j>1): y=y+x[j] j=j-1 # To invert the string i=len(y)-1 z="" while (i>=0): z=z+y[i] i=i-1 components = string.split(z) length=len(components) dic = {} control=0 p = px a = ax t = tx b = bx while (p!=0): tempDic = {('p'+`control+1`): string.atoi(string.replace(components[control], ",", ""))} dic.update(tempDic) p=p-1 control=control+1 while (a!=0): tempDic = {('a'+`control+1-px`): string.atoi(string.replace(components[control], ",", ""))} dic.update(tempDic) a=a-1 control=control+1 while (t!=0): tempString = string.replace(components[control], ",", "") tempString1 = string.replace(tempString, '"', '') tempString2 = string.replace(tempString1, "'", "") tempDic = {('t'+`control+1-px-ax`): `(tempString2)`} # tempDic = {('t'+`control+1-px-ax`): `(components[control])`} dic.update(tempDic) t=t-1 control=control+1 while (b!=0): tempDic = {('b'+`control+1-px-ax-tx`): string.atoi(string.replace(components[control], ",", ""))} dic.update(tempDic) b=b-1 control=control+1 lname = string.replace(components[length-1], ",", "") fname = string.replace(components[length-2], ",", "") uname = string.replace(components[length-3], ",", "") lname = string.replace(lname, "'", "") fname = string.replace(fname, "'", "") uname = string.replace(uname, "'", "") HTML = '<td><input type="checkbox" name="' + matric + '" value="true">' + matric + '</td>\n' HTML = HTML + '<td>' + fname + '</td>\n' HTML = HTML + '<td>' + lname + '</td>\n' HTML = HTML + '<td><a href="mailto:+ ' + uname + '@cs.strath.ac.uk">' + uname + '@cs.strath.ac.uk</a></td>\n' p = px a = ax t = tx b = bx while (p!=0): key="p"+`px-p+1` value = dic[key] HTML=HTML + '<td>' + `value` + '</td>\n' p=p-1 while (a!=0): key="a"+`ax-a+1` value = dic[key] HTML=HTML + '<td>' + `value` + '</td>\n' a=a-1 while (t!=0): key="t"+`tx-t+1` value = string.replace(dic[key], "'", "") HTML=HTML + '<td>' + `value` + '</td>\n' t=t-1 while (b!=0): key="b"+`bx-b+1` value = dic[key] HTML=HTML + '<td>' + `value` + '</td>\n' b=b-1 return HTML

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dtml-tree causing authorization errors
by yves＠njc.ch 23 Jan '01

23 Jan '01

I've stumbled upon a strange problem with dtml-tree in version 2.2.5 (the problems occurs in the same way in any of the 2.2.x version), but didn't exhibit itself in 2.1.6: Here's some (very) crude code to generate a tree object: ------------- class Tree: def __init__(self, val='top'): self.name = val self.tpId = val def tpValues(self): tlist = [] for i in range(8): tlist.append(Tree('me: %s' % i)) return tlist def build(): return Tree() -------------- Now if I attach this to an "External Method" called "mytree" which references the function "build()", and I write the following DTML: ----- <dtml-tree mytree> <dtml-var name> </dtml-tree> ----- In version 2.1.6, I obtain a tree, it's composed of 8 items and each expands into 8 more, etc... If I do the same thing in version 2.2.5, I get an authentication failure... even though I'm logged on as superuser or an admin user... I've tried this on a fresh install to ensure nothing gets in the way. The error I get is: ------------ Zope Error Zope has encountered an error while publishing this resource. Unauthorized Sorry, a Zope error occurred. Traceback (innermost last): File /home/zope/Zope-2.2.5-src/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /home/zope/Zope-2.2.5-src/lib/python/ZPublisher/Publish.py, line 187, in publish File /home/zope/Zope-2.2.5-src/lib/python/ZPublisher/Publish.py, line 171, in publish File /home/zope/Zope-2.2.5-src/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: toto) File /home/zope/Zope-2.2.5-src/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: toto) File /home/zope/Zope-2.2.5-src/lib/python/OFS/DTMLMethod.py, line 172, in __call__ (Object: toto) File /home/zope/Zope-2.2.5-src/lib/python/DocumentTemplate/DT_String.py, line 528, in __call__ (Object: toto) File /home/zope/Zope-2.2.5-src/lib/python/TreeDisplay/TreeTag.py, line 154, in render (Object: glu) File /home/zope/Zope-2.2.5-src/lib/python/TreeDisplay/TreeTag.py, line 260, in tpRender File /home/zope/Zope-2.2.5-src/lib/python/TreeDisplay/TreeTag.py, line 514, in tpRenderTABLE (Info: (['top', []], {'id': 'tpId', 'childless_decoration': '', 'name': 'glu', 'branches': 'tpValues', 'url': 'tpURL', '': 'glu'}, (['top', []],), (['top', []],))) File /home/zope/Zope-2.2.5-src/lib/python/TreeDisplay/TreeTag.py, line 431, in tpRenderTABLE File /home/zope/Zope-2.2.5-src/lib/python/OFS/DTMLMethod.py, line 194, in validate (Object: toto) File /home/zope/Zope-2.2.5-src/lib/python/AccessControl/SecurityManager.py, line 139, in validate File /home/zope/Zope-2.2.5-src/lib/python/AccessControl/ZopeSecurityPolicy.py, line 159, in validate Unauthorized: name

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Limited folderish objects
by Nolan Darilek 23 Jan '01

23 Jan '01

The Folder class offers quite a bit of the functionality which I need for a current project. However, what I'm attempting to create isn't a traditional folder for DTML objects, methods, etc. Instead, I'm creating a folder which contains subfolders which are intended for specific objects. The "available objects" list in the parent folder should only allow the creation of a certain type of object. So, how can I do this? I was told that I could modify the permissions on the folder to prevent other objects from being added, and this seems to be confirmed by what I managed to find out about filtered_meta_types, but I'm not sure. Can anyone offer any advice? Thanks.

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Adding users with a PythonMethod
by Curtis Maloney 23 Jan '01

23 Jan '01

Greetings, I'm trying to add a users from within a PythonMethod. I have searched this list and found examples of how to add via DTML, but they all seem to require REQUEST. I have built a dictionary containing the appropriate keys, and passed that as REQUEST, and the following error occurs: Error Type: KeyError Error Value: SCRIPT_NAME From what I can see of the sources, if you pass a non-None REQUEST to _addUser (via manage_users) it will return manage_main. This seems odd to me, because I can't see how you could pass the user details otherwise. So, what I'm left to conclude is it's easier to add a new user from DTML than it is from a PythonMethod. I hope I'm missing something here... any ideas? Have a better one, Curtis Maloney

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RE: [Zope] Adding roles in 2.3b2 and CVS
by Itai Tavor 22 Jan '01

22 Jan '01

Change all occurrences of self.manage_access(self,REQUEST) to self.manage_access(REQUEST) in AccessControl/Role.py. BTW, this has been reported to the collector before this thread even started. Mayers, Philip J wrote: >What's the easiest fix on a 2.3.0b2 server? > >Regards, >Phil > >+----------------------------------+ >| Phil Mayers, Network Support | >| Centre for Computing Services | >| Imperial College | >+----------------------------------+ > >-----Original Message----- >From: Brian Lloyd [mailto:brian@digicool.com] >Sent: 22 January 2001 16:20 >To: Mayers, Philip J; 'Martijn Pieters'; Phil Harris >Cc: zope(a)zope.org >Subject: RE: [Zope] Adding roles in 2.3b2 and CVS > > >Already fixed in CVS guys - thanks though! > > >Brian Lloyd brian(a)digicool.com >Software Engineer 540.371.6909 >Digital Creations http://www.digicool.com -- Itai Tavor "Je sautille, donc je suis." C3Works itai(a)c3works.com - Kermit the Frog "If you haven't got your health, you haven't got anything"

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Re: [Zope] Upload file and :int with :required and
by Dieter Maurer 22 Jan '01

22 Jan '01

Diego Rodrigo Neufert writes: > When using :required with a file field I got this error: > Error Type: AttributeError > Error Value: 'string' object has no attribute 'read' > > How to make a file field required in dtml? > > and anyone know how to make something like :int:required works? > I need a int field to be required.... Both will not work. ":required" is implemented as a converter (which is a bug, in my view). It means "convert to a string and check, it is not whitespace only". ":int" is a converter, too. And you can only have a single converter per form variable. However, ":int" implies "required", as an empty string is not a valid integer. This means you will get a ValueError, if the form field is submitted empty, unless you used he ":ingore_empty" suffix. To check that a file was supplied, you can check *in DTML* that "<file>.filename" is non_empty: <dtml-unless "your_file_field.filename">  </dtml-in> Dieter

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Re: [Zope] Problem to start zope
by Dieter Maurer 22 Jan '01

22 Jan '01

FR Chalaoux writes: > I installed Zope-2.2.5.src on bsdi 3.0, with Python 2.0. Compilation > runned fine but when I run ./start I obtain the followinfg error : > > bash-2.02$ ./start > 'import site' failed; use -v for traceback > Traceback (most recent call last): > File > "/usr/local/apache/htdocs/commercial/advl/zope/Zope-2.2.5-src/z2.py", > line 283, in ? > import os, sys, getopt, string > ImportError: No module named os Apparently, Python does not find its infrastructure. I see 2 potential causes: 1. There is no valid "python2.0" in "/usr/local/lib" 2. Python 2.0 no longer looks for its infrastructure via PYTHONHOME *and* the default place. Check 1. If "python2.0" is there (and correct), it may help to install a symbolic link from "<zope>/lib/python2.0" to "/usr/local/lib/python2.0". Dieter

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ZPoPyDA woes
by J B Bell 22 Jan '01

22 Jan '01

Dear comrades in zopeness: For some time now I have been struggling trying to get Zope to talk to Postgres. I am now nearly successful and hope that the revolutionary spirit of fellow zopatistas will carry the day. Background: Debian 2.1r2 on a PII 600 or so (the machine is pretty loaded) Postgres 7.0.3 Python 1.5.2 PoPy 1.4.1 ZPoPyDA 0.7 The most recent vexation is simple: after expanding ZPoPyDA.0.7.tar.gz (dl'ed from www.zope.org/Members/tm) there is no configure file and no Makefile. Like many products, it just expands out into lib/python/Products/ZPoPyDA/*. However, the README file says to run "./configure; make; make install". In an acronym, WTF? Bonus question: I had a terrible time with installing PoPy itself until I modified the makefile to have a second -I argument going back to the source (.../postgres-7.0.3/src/include). One or the other (the source or the installed include, that is) would result in various missing *.h files. Did I install postgres incorrectly? There was no .../include/catalog directory at all in the installed directories, which PoPy wanted. I eagerly anticipate any clues, and thank everyone for their attention. --JB

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dtml-in sort for numerical values
by Christian Sonntag 22 Jan '01

22 Jan '01

Hi there, I am trying to sort results of an ZAQL query with the dtml-in sort tag, but it appears to be sorted alphanumerically, is there a way to tell it to sort numerical values? Thanks, Christian

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How to access a dtml-var from a python method?
by Rommel Novaes Carvalho 22 Jan '01

22 Jan '01

Hi everybody, I would like to know how can I access a variable that I have on a html form, for instance, in my python method and work with this variable in python? I tried to pass as a parameter, like def method(<dtml-var variable>): ... if <dtml-var variable> == ... and of course it did not work, I would be really glad if any of you could help me. Thanks in Advance, Rommel Novaes Carvalho

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