May 2001 - Zope - Zope lists

Re: Product Creation and Permission]
by Jason Joy 07 May '01

07 May '01

> > Which I think is directly related to what I am experiencing with getting the > > manage_main. > > > > Jason > > > > Very interesting. Can you post the revised Python code of your product? Sure, I will put up what I current have, but I have also thought about this over the weekend and came up with some ideas on how to perhaps make this work, although I do not know how practical it will be, so, please let me know if this is possible or not: In A, in _getOb (currently encapuslated with ## Right here ##), I have been tinkering on how it has been working. I tried to return the instance of A instead of creating another B, and it works fine. I have a hunch there is elements in A when Zope creates the object that just is not passed onto B that contains information about the Zope session that it would like to have. Only problem is if you do a B = A, it is a reference. B and A at this point would have the same memory location and would not be useful. Also, since B has some differences to A, structurally, it won't help out there evil. I think the way to fix this is to copy properties from A and B, but I am not sure which ones are there nor what properties exist on A (other than A.REQUEST). How can one copy objects such that B = self? Even this I am not sure because object B has to be created by what is defined in class B... Any thoughts? Jason ## Code Is Here ## A: import Globals from Globals import Persistent, Acquisition import AccessControl import OFS from B import * from pg import DB from AccessControl import ClassSecurityInfo from Acquisition import Implicit __allow_access_to_unprotected_subobjects__ = 1 class objectChunk(Implicit): security = ClassSecurityInfo() security.declareObjectPublic() security.setDefaultAccess('allow') security.__allow_access_to_unprotected_subobjects__ = 1 def SQLquery(query): db = "zope" server = "192.168.1.1" port = 5432 sqluser = "zope" sqlpassword = "********" data = [] if query[0:6] == "SELECT": for output in DB(db,server,port,'',sqluser,sqlpassword).query(query).dictresult(): result = objectChunk() masterkeys = output.keys() for key in masterkeys: f = setattr(result, key, output[key]) data.append(result) else: SQLOUTPUT = DB(db,server,port,'',sqluser,sqlpassword).query(query) return (data) def manage_addA(self,id,name,description,REQUEST=None): obja = A(id,name,description) self._setObject(id, obja) if REQUEST is not None: return self.manage_main(self, REQUEST) manage_addAForm = Globals.HTMLFile('dtml/add_obja', globals()) class A( OFS.ObjectManager.ObjectManager, OFS.PropertyManager.PropertyManager, Acquisition.Implicit, Persistent, AccessControl.Role.RoleManager, OFS.SimpleItem.Item, ): a=() manage_options=( {'label':'Properties', 'action':'manage_main'}, {'label':'View', 'action':''}, ) + OFS.SimpleItem.SimpleItem.manage_options meta_type = 'Product' index_html = Globals.HTMLFile("dtml/obja", globals()) #manage_main = Globals.HTMLFile("dtml/edit_obja", globals()) def __init__(self, id, name,description): self.id = id self.name = name self.desc = description def objectItems(self): objQUERY = "SELECT * FROM B WHERE dgid = '" + self.id + "'" QUERYRESULT = [] QUERYRESULT = SQLquery(objQUERY) a = [] for objects in QUERYRESULT: tp = B(objects.id,objects.dgid,objects.obj_name,objects.obj_desc,objects.obj_creator, objects.obj_created,objects.obj_moddate) tpwrapper = [objects.id,tp] a.append(tpwrapper) return a def manage_beforeDelete(self,item,container): QUERYSTRING = "DELETE FROM B WHERE dgid = '" + item.id + "'" queryresult = SQLquery(QUERYSTRING) ## Right here ## def _getOb(self,id,dp=2): __allow_access_to_unprotected_subobjects__ = 1 nextobject = B(self.id,id,"name","desc","creater","createrdate","moddate") return nextobject ## Right here def _delObjects(self,id): "This deletes the objects specified" print "In the _delObjects" def _delOb(self,id): "This deletes the objects specified" SQLQUERY = "DELETE FROM B WHERE id = '" + id + "'" INQUIRE = SQLquery(SQLQUERY) Globals.default__class_init__(A) Globals.default__class_init__(B) Globals.InitializeClass(objectChunk) B: import Globals from Globals import Persistent, Acquisition import AccessControl import OFS from pg import DB from AccessControl import ClassSecurityInfo from Acquisition import Implicit __allow_access_to_unprotected_subobjects__ = 1 class objectChunk(Implicit): security = ClassSecurityInfo() security.declareObjectPublic() security.setDefaultAccess('allow') security.__allow_access_to_unprotected_subobjects__ = 1 def SQLquery(query): ## change these when you change servers db = "zope" server = "192.168.1.1" port = 5432 sqluser = "zope" sqlpassword = "********" data = [] if query[0:6] == "SELECT": for output in DB(db,server,port,'',sqluser,sqlpassword).query(query).dictresult(): result = objectChunk() masterkeys = output.keys() for key in masterkeys: f = setattr(result, key, output[key]) data.append(result) else: SQLOUTPUT = DB(db,server,port,'',sqluser,sqlpassword).query(query) return (data) def manage_addB(self,dg_id,id,name,desc,creater,createrdate,moddate,REQUEST=None): The argument 'self' will be bound to the parent Folder. QUERYSTRING = "INSERT INTO C (id,dgid,obj_name,obj_desc,obj_creator,obj_created,obj_moddate) VALUES ('"+id+"','"+dg_id+"','"+name+"','"+desc+"','"+creater+"','"+createrdate+"','"+m oddate+"')" print QUERYSTRING SQLRETURN = SQLquery(QUERYSTRING) if REQUEST is not None: return self.manage_main(self, REQUEST) manage_addTopicForm = Globals.HTMLFile('dtml/add_obj', globals()) class B( OFS.ObjectManager.ObjectManager, OFS.PropertyManager.PropertyManager, Acquisition.Implicit, Persistent, AccessControl.Role.RoleManager, OFS.SimpleItem.Item, ): a=() manage_options=( {'label':'Properties', 'action':'manage_main'}, {'label':'View', 'action':''}, ) + OFS.SimpleItem.SimpleItem.manage_options meta_type = 'Product 2' index_html = Globals.HTMLFile("dtml/obj", globals()) manage_main = Globals.HTMLFile("dtml/edit_obj", globals()) def __init__(self,dg_id,id,name,desc,creater,createrdate,moddate): self.dg_id = dg_id self.id = id self.name = name self.desc = desc self.creater = creater self.createdate = createrdate self.moddate = moddate __allow_access_to_unprotected_subobjects__ = 1 manage_workspace__roles__=('Manager','Anonymous',) def objectItems(self): objQUERY = "SELECT * FROM B WHERE dgid = '" + self.id + "'" QUERYRESULT = [] QUERYRESULT = SQLquery(objQUERY) a = [] for objects in QUERYRESULT: tp = B(objects.id,objects.dgid,objects.obj_name,objects.obj_desc,objects.obj_creator, objects.obj_created,objects.obj_moddate) tpwrapper = [objects.id,tp] a.append(tpwrapper) return a Globals.InitializeClass(objectChunk) ____________________________________________________________________ Get free email and a permanent address at http://www.netaddress.com/?N=1

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Re: [Zope] Where may I find some discussions about the pros and cons of Zope vs ASP vs PHP, etc...
by dave＠kovach.com 07 May '01

07 May '01

Hi - I havent found a concise comparision between the 3... and I dont think there will be anything. At least nothing that trys to equate out php, asp, coldfusion and zope. Maybe the first 3. But, zope is a breed all its own. I come from an ASP background - and Zope marvels me nearly every day. Like yesterday, I exported and imported 1 object (which was my whole site - or an object that contained all other site objects) to a remote web-host server. And, in one fell swoop my site went from my dev. box to my production box just like that! The brilliance of an oodb running behind your applications just purely separates zope from anything else. But, because its capabilities are to place presentation, application and data logic into 1 tier - while maintaining the FLEXIBILITY of keeping your presentation logic separate from app. logic etc.... it gets pretty deep pretty quick. ASP is a fine solution. But, Zope allows you to make yourself feel smart again - when you accomplish something like listing out a "recordset" into a table and it doesnt require you to write mountains of mundane "I already wrote that like 52,000 times" code to do so. You feel smarter cause for once - doing things take less time and you dont have to feel like a slave to ASP. I fact that its oo based and extendable beyond belief with python... its silly! But, for private projects where I am the sole person making decisions ZOPE is great. But, shifting an ASP shop with 15 coders working on something to ZOPE doesnt seem likely today. Cause Zope isnt as easy as writing a bunch of RESPONSE.WRITE's - but, ZOPE wont leave you with smelly stinky embedded vbscript everywhere either. By all means, write me if you got specific questions. Sincerely, David Kovach dave(a)kovach.com On Mon, 07 May 2001, servel yannick wrote: > > I would like to compare (if it is possible to compare them) these server > side applications. > > Many thanks in advance, > > Regards, > > > Yannick > > > > _______________________________________________ > 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 ) _____________________________________________________ Get your name as your email and web site address. http://www.NetIdentity.com. Be somebody online.

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[ANN] ZShell 0.2
by Jerome Alet 07 May '01

07 May '01

Hi again, the 0.2 version of the Zope Shell is online at: http://cortex.unice.fr/~jerome/zshell/ New features: * bug corrections * a better whoami, thanks to Peter Bengtsson * wget now works and allows you to suck websites (not recursively yet) and put them into the ZODB. enjoy ! Jerome Alet - alet(a)unice.fr

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Re: [Zope] help! too many open files (zope-2.3.1)
by Dieter Maurer 07 May '01

07 May '01

Bak @ kedai writes: > i've been running zope-2.3.1 for quite some time now. everything went well. > but > the isp had a power failure today. and after that i kept getting too many > open files, esp with access of mailhost, localfs, etc. > > i've increased the file-max in /proc/sys/fs/file-max. ulimit -a tells me > that i can only have 1024 file open. > > if i restart zope, everything's ok. but the problem will appear again > > is this the problem? Apparently, something leaks file descriptors. You must find the leak: "lsof" seems to be a magic wand to analyse file descriptor problems. I did not use it myself, as it requires root privileges. But maybe, it can help you. I (without "lsof") would use "netstat" to determine whether sockets are leaked or files. For sockets, it is possible to determine the peers and get a feeling, what use makes problems. For files, I would use "fuser" (the weaker brother of "lsof") to find out which files are unexpectedly open or open by two many processes. As soon as the file is located, it would probably be clear, where to find the problem. Dieter

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Re: [Zope] zope: methods and settings
by Dieter Maurer 07 May '01

07 May '01

Jan writes: > 1. i would like to write a method that creates a folder and a default > dtml-document. this methods shall be started through a form. at the moment i > can use this method in order to create a folder (id is given via form) and a > default dtml-document, both in the directory from which the method is > started. how can i make settings so that the default dtml-document is > created in the new folder, or put into the folder directly after creation? <dtml-call "manage_addFolder(id,....)"> <dtml-with id> <dtml-call "manage_addDTMLDocument(....)"> .... </dtml-with> > 2. i list zope folders in a navigation. in order to list them in a special > order i use an attribute (index). is it possible to display the value of > this attribute for each document or folder in the management screen in > addition to id and name? You need to change the DTML source... Dieter

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Re: [Zope] question about searching on subobjects
by Dieter Maurer 07 May '01

07 May '01

Junk writes: > ... searching on subobjects ... Implement a parameterless Python script that does the subobject magic. Place it high in the Zope hierarchy, such that it is available by acquisition where it is needed. Use it as an index in your ZCatalog. More info: the Zope book or URL:http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html Dieter

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Re: [Zope] question about multiple search criteria
by Dieter Maurer 07 May '01

07 May '01

Junk writes: > i have this database wich i want to sort by multiple criteria (12 criteria) > so i would have to search a zcatalog with those and i heard that quite a lot > of people don't trust the zcatalog and it just doesn't seem to be *right*. > > is it cleaner to do it in some sort of relational database and make sql > queries on it ? A relational database gives you SQL. For atomic field values, SQL is much more powerful than the current ZCQI (Zope Catalog Query Interface). You can combine queries over different tables, combine subqueries with and/or/not almost arbitrary, have lots of functions to be used for the query results or in the where clause. However, many relational databases do not support efficient text searches. Then, I would look for ZCatalog (if I do not get too many objects (10.000 to 100.000), or for a database system with text query support. Dieter

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How to add dtml-docs to Favorites links folder within CMF?ed?
by Ausum 07 May '01

07 May '01

This is a question I've previously posted at Zope-CMF, and haven't had an answer until this moment. I'm transfering previous dtml documents and directories to CMF, and I want to enable them to be stored at the "Favorites" folders of the users. Loging and logouts seem the work this way (by modifying header&footer skins), but the addtofavorites feature don't. Is there a workaround? Is it possible to turn all those previous documents into CMF-savvy, while keeping all the standard dtml docs and methods features like direct editing? Thanks in advance, Ausum

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Re: [Zope] broken root security tab
by Dieter Maurer 07 May '01

07 May '01

Dave Ahn writes: > This is what I get: > .... > Error Type: TypeError > Error Value: string member test needs char left operand > > Traceback (innermost last): > .... > File /usr/lib/zope/lib/python/AccessControl/Role.py, line 177, in <lambda> > TypeError: (see above) > > The relevant lines from Role.py appear to be: > d={'name': name, > 'acquire': type(roles) is ListType and 'CHECKED' or '', > 'roles': map( > lambda ir, roles=roles, valid=valid, ip=ip: > { > 'name': "p%dr%d" % (ip,ir), > 'checked': (valid[ir] in roles) and 'CHECKED' or '', > }, > indexes) The "roles" variable holds a string. Someone else currently has similar problems (--> mailing list archives). He found out, that delete all Z Instances from a folder removed the problem. See my answer to his problem report on how I would try to analyse the problem. Dieter

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Authentication for outside users
by Sven Syld 07 May '01

07 May '01

Hello, How could I do so that only users from a certain IP address will need to authenticate - outsiders? Others - insiders - will not. If I disable anonymous access and make new role with two users - outsider and insider. But authentication window will pop up for both of them even if I leave password blank. Can I automatically authenticate in DTML? Also redirecting into login screen in standard_html_header pops into my mind. But it is ugly. And unsecure. Sven

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