September 2001 - Zope

Question about ZClass Tabs/Views (How do you make a custom edit_properties screen?)
by Ronald L. Chichester 12 Sep '01

12 Sep '01

I have a ZClass (derived from Folder). I want to be able to edit the properties in the ZClass, to wit, I have created an index_html file, a manage_editDoctrineFolderForm, and a manage_addDoctrineFolderForm that are stored in the ./doctrineFolder subdirectory. All of the above-identified files, as well as the ZClass file itself, are attached. I have a purplexing problem. Every time I add the ZClass, the proper add form appears and I am able to add the ZClass Folder derivative to the current folder. However, My "Edit" view table does not appear. Moreover, when I click on the Properties tab, only the Title property is shown, and not the other two properties of the object, i.e., a default manage_properties is being used, not the one I designated. I'm also having trouble getting Zope to recoginize my manage_editForm rather than the default forms. I suspect it is inheriting something, but it won't let me override those settings. Another problem is that Zope won't seem to For example, in the attached code, there is an index_html file that is to be invoked when you press the "View" tab in the manage mode. However, doing so presents an error message saying that the variable "status" isn't there. Well, I corrected that error, but it still shows up. (Incidentally, no errors were present when I restarted Zope). This problem is driving me nuts! I'm about to junk Zope altogether because you can't make a proper ZClass work without wiping out zope entirely, reinstalling the thing from scratch, and then installing the corrected class (it seems to be the only way to get Zope to forget the previous mistake). Zope has a memory like an elephant -- but only for your mistakes, not for what you want!. Surely there is a way to make changes in a ZClass show up in Zope. Surely there is a way to get the ZClass to have a decent edit screen other than the default? Diter, I implore you to write a section in your book with examples of products that have custom edit screens/properties/methods but in a way that you don't need a Computer Science degree to understand. Something along the lines of the Minimal product (great idea, but the code didn't always work, and he finished the Sequel before he got to custom Views/property sheets). The files are attached. I would appreciate (greatly) any help someone could offer. Best wishes, Ron ############################################################################## # Legal Doctrine Folder Class, part of the Legal Doctrine Product for Zope # # Copyright (C) 2001 Ronald L. Chichester, Esq. # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License # as published by the Free Software Foundation; either version 2 # of the License, or (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. # ############################################################################## __doc__ = """Legal Doctrine Folder Object""" __version__ = '0.2.4' from OFS.Folder import Folder import Products import Globals from Globals import PersistentMapping, HTMLFile, HTML, DTMLFile manage_addDoctrineFolderForm = DTMLFile('doctrineFolder/manage_addDoctrineFolderForm', globals()) manage_editDoctrineFolderForm = DTMLFile('doctrineFolder/manage_editDoctrineFolderForm', globals()) manage_properties = DTMLFile('doctrineFolder/manage_editDoctrineFolderForm', globals()) class DoctrineFolder(Folder): "Legal Doctrine Folder Object" meta_type = 'Legal Doctrine Folder' mange_options = ( {'label': 'Contents', 'action': 'manage_main'}, {'label': 'View', 'action': 'index_html'}, {'label': 'Edit', 'action': 'manage_editDoctrineFolderForm'}, {'label': 'Properties', 'action': 'manage_properties'}, {'label': 'Security', 'action': 'manage_access'}, {'label': 'Undo', 'action': 'manage_UndoForm'} ) def __init__(self, id, title, topic, maintainer): "Initialize a new instance of the Legal Doctrine object" self.id = id self.title = title self.topic = topic self.maintainer = maintainer # The following is used to display the object's contents... index_html = DTMLFile('doctrineFolder/index_html', globals()) def manage_editDoctrineFolderAction(self, title, topic, maintainer, RESPONSE=None): """Change the instance values.""" self.title = title if topic == '': self.topic = title else: self.topic = topic self.maintainer = maintainer self._p_changed = 1 RESPONSE.redirect('manage_editDoctrineFolderForm') def getDoctrineInfo(oid): """Return an id (for the url) and a title of a specific Legal Doctrine""" found = 0 contents = [] # Run thorugh the objects in the folder to see if there are any Legal Doctrines... for obj in container.objectValues('Legal Doctrine'): if found == 0: if oid == obj.getId(): url = obj.abolute_url title = obj.title thumbs_up = obj.thumbs_up contents.append(namespace(url=url, title=title, thumbs_up=thumbs_up)[0]) found = 1 # set the flag on success to avoid repeating the loop... # Return indicative values if the object wasn't found... if found == 0: contents.append(namespace(url='', title='', thumbs_up=0)[0]) vars = namespace(contents=contents) return vars def manage_addDoctrineFolder(self, id, title, topic, maintainer, REQUEST=None): """Add a Legal Doctrine Folder to another folder.""" id = str(id) title = str(title) topic = str(topic) maintainer = str(maintainer) c = DoctrineFolder(id, title, topic, maintainer) self._setObject(id, c) if REQUEST is not None: return self.manage_main(self, REQUEST) <dtml-var standard_html_header> <H2 ALIGN="center"><dtml-var title></H2> <TABLE ALIGN="center" WIDTH="95%" CELLSPACING="8" BORDER="0"> <dtml-if expr="title <> ''"> <TR> <TH ALIGN="right" VALIGN="top" WIDTH="20%">Title:</TH> <TD WIDTH="80%"><dtml-var title></TD> </TR> </dtml-if> <dtml-if expr="status <> ''"> <TR> <TH ALIGN="right" VALIGN="top" WIDTH="20%">Topic:</TH> <TD WIDTH="80%"><dtml-var topic></TD> </TR> </dtml-if> <dtml-if expr="maintainer <> ''"> <TR> <TH ALIGN="right" VALIGN="top" WIDTH="20%">Maintainer:</TH> <TD WIDTH="80%"><dtml-var maintainer></TD> </TR> </dtml-if> </TABLE> <dtml-var standard_html_footer> import DoctrineFolder import Doctrine import Case def initialize(context): """This is the Legal Doctrine Product""" context.registerClass( DoctrineFolder.DoctrineFolder, permission='Add Legal Doctrine Folder', constructors = ( DoctrineFolder.manage_addDoctrineFolderForm, DoctrineFolder.manage_addDoctrineFolder ), icon = 'images/doctrineFolder.jpg', ) context.registerClass( Doctrine.Doctrine, permission='Add Legal Doctrines', constructors = ( Doctrine.manage_addDoctrineForm, Doctrine.manage_addDoctrine ), icon = 'images/doctrine.jpg', ) context.registerClass( Case.Case, permission='Add Legal Cases', constructors = ( Case.manage_addCaseForm, Case.manage_addCase ), icon = 'images/case.jpg' )

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dynamically creating ZSQLMethods in python
by Albert Ting 11 Sep '01

11 Sep '01

I found it a pain to manage ZSQL Methods inside Zope, too many mouse clicking for my taste. Besides, I felt it was "safer" if I could hide the ZSQL calls within python. Someone recently posted a solution using a ZSQLMethod's manage_edit function. However, every time the method is called, the Data.fs file gets updated and continues to grow until you do a purge. Below is snapshot of what I've done. It does not modify Data.fs, nor do you have any ZSQLMethod objects stored in Data.fs. The only thing you need is a sql connection object. This works in 2.3, I have not tried it in 2.4, nor with ZEO. # example: # return up to 100 rows from the MyDB.Users table # res=queryTable(self,"my_connection","select * from Users","",MAXROWS=100) from Products.ZSQLMethods.SQL import SQL def queryTable(self,connection_id,template,vars,keywords): id = "__my_query" sql = SQL(id, id, connection_id, vars, template) # normally if we create a ZSQL method in zope (or add sql instance # to self object), the sql instance would hold the ZSQL DA object. # So we need to manually set it. # # note that we don't store the sql object into the zope object, as # the transaction gets stored in the Data.fs. Even deleting later # makes it worse, as the "undo" records gets updated setattr(sql,sql.connection_id, getattr(self,sql.connection_id)) if keywords.has_key(MAXROWS): # DA parses max_rows and saves it in max_rows_ sql.max_rows=sql.max_rows_=keywords[MAXROWS] results = sql(keywords) return results

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Python Script control flow question
by H.de.Wit＠SFK.NL 11 Sep '01

11 Sep '01

Hello, This should be terribly simple, but i just don't see how it should be. I have a python script, it handels the output of a SQL statement with a SELECT COUNT in it. It tests the case that the count is zero (and that there is no record in the SQLresult). This is my idea how it should be: SQLresult=container.SQL_statement() if (not SQLresult): resultcount=0 else: resultcount=SQLres[0][0] return resultcount This doesn't return a value if the resultcount is 0, nothing seem to happen during testing the python script. It works fine if the resultcount>0 This however is a working script SQLresult=container.SQL_statement() if (not SQLresult): resultcount=0 print resultcount return printed else: resultcount=SQLres[0][0] return resultcount It is ugly, but it works. Is it possible to remove the print resultatcount and the return printed somehow? Met vriendelijke groeten, Hans de Wit Stichting Farmaceutische Kengetallen Postbus 30460 2500 GL DEN HAAG Tel. 070-3737448 Fax 070-3737445

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context VS container : newbie question
by Sylvain Boureliou 11 Sep '01

11 Sep '01

Hi all I don't see really what is the difference between "context" and "container" in Python Script. In external method, context is a tacit argument, but how to refer to "container" ? Thanks for help Sylvain

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ZCatalog searching again!
by paul dunbar 11 Sep '01

11 Sep '01

Thanks to the people who replied to my last question.I think the way Dieter told me to do it is the best way for me,that is,putting double quotes around the name before i search it.This however is a problem.The name is taken in from the user as a variable 'au'.So,for example,if the user enters 'paul dunbar',this is entered into the catalog search by au,not by the actual name.So,the problem is how do i enclose the au varaible in double quotes to be able to search the catalog.I have tried the following: <dtml-let fullname=-.str('"'au'"')> i was hoping that then fullname would be in the format "paul dunbar" and then i could enter fullname in to the catalog and not au. Any help would be appreciated. paul dunbar. -- _______________________________________________ Talk More, Pay Less with Net2Phone Direct(R), up to 1500 minutes free! http://www.net2phone.com/cgi-bin/link.cgi?143

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programmatic manipulation of Property Sheets
by Mitchell L Model 11 Sep '01

11 Sep '01

Could someone please show an example of the programmatic manipulation of property sheets for an instance of a Python class (not ZClass) derived from PropertyManager? I've looked at http://www.zope.org/Members/michel/Projects/Interfaces/PropertySheets and the pages it points to, which provide most of the information, and I'm sure I can read the code enough to figure out the rest, but it would be really helpful to have an example of some interesting manipulations. Specifically, I want to add a few property sheets, then define a few properties for each of those sheets (with initial values). Ideally, I'd like to do this generically somehow as part of my class -- especially the initial values -- rather than having to initialize every property of every sheet for each instance.

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Access denied on temporary files ????
by Doyon, Jean-Francois 11 Sep '01

11 Sep '01

Hello, I'm trying to add a DTML document, and am getting the following: <!-- Traceback (innermost last): File /usr/local/Zope-2.4.1-linux2-x86/lib/python/ZPublisher/Publish.py, line 223, in publish_module File /usr/local/Zope-2.4.1-linux2-x86/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/Zope-2.4.1-linux2-x86/lib/python/Zope/__init__.py, line 226, in zpublisher_exception_hook (Object: ApplicationDefaultPermissions) File /usr/local/Zope-2.4.1-linux2-x86/lib/python/ZPublisher/Publish.py, line 136, in publish File /usr/local/Zope-2.4.1-linux2-x86/lib/python/ZPublisher/HTTPRequest.py, line 409, in processInputs File /usr/local/Zope-2.4.1-linux2-x86/lib/python2.1/cgi.py, line 517, in __init__ File /usr/local/Zope-2.4.1-linux2-x86/lib/python/ZPublisher/cgi_hotfix.py, line 15, in read_multi File /usr/local/Zope-2.4.1-linux2-x86/lib/python2.1/cgi.py, line 519, in __init__ File /usr/local/Zope-2.4.1-linux2-x86/lib/python2.1/cgi.py, line 616, in read_single File /usr/local/Zope-2.4.1-linux2-x86/lib/python2.1/cgi.py, line 636, in read_lines File /usr/local/Zope-2.4.1-linux2-x86/lib/python2.1/cgi.py, line 723, in make_file File /usr/local/Zope-2.4.1-linux2-x86/lib/python/tempfile.py, line 151, in TemporaryFile OSError: [Errno 13] Permission denied: '@12087.4' I'm not sure what temporary directory it is trying to use (I set the default in the tempfile.py file to /tmp instead of None, but the module has it's own logic for figuring out temp file paths). I'm realy not sure why this occurs, I was having this problem one before, and managed to "fix it", although I never figured out HOW! :) One thing is I do have an Python External Method that uses the tempfile module, and changes the directory used ... But then again, it should still be writable by nobody or root ... How do I find out where it is ACTUALLY trying to put this tempfile ?? Thank you ... Jean-François Doyon Internet Service Development and Systems Support GeoAccess Division Canadian Center for Remote Sensing Natural Resources Canada http://atlas.gc.ca Phone: (613) 992-4902 Fax: (613) 947-2410

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Your Help is seriously needed : retrieving Dtml Documents with user input filled from the form
by Hamzat kamal 11 Sep '01

11 Sep '01

Dear Zoptistals, (I am very sorry for the inconveniences that might have caused then i seriously need your assistance) I am having one serious problem which I will like you to assist me. I am keeping archives which is reference by the users by typing the file name into a form displayed on the web. i stored the user input into a var name called date_code. <input type="text" name="date_code">. The action on this form is pointed to a folder that contain an index_html file, which reference the file that bear the actual name stored inside the variable date_code. <dtml-var expr="_.getitem(_.string.lower(date_code),1)"> to render the file. This work perfectly when a user type in the value for the date_code var. My problem is this. I have some other links on the index_html page which suppose to use the date_code value which the user typed to display their contents as well, and i have already stored those content in their various folders, but to my surprise when clicked on these links this is the error message i got: Error Type: NameError Error Value: date_code despite the fact that i set the path to those folder that contain the files. Please i need your assistance as soon as posssble. This is the url of the site :http://www.champion-newspapers.com On the home page clicked on archive button, when a newpage is displayed ignore the instruction and press logon button . Another page will be displayed asking you to enter the date code, for the purpose of this test type friday_1008_html and click view button. This will display the teaser archive for the news item, there after try to click on editorial on the left navi you will then see the error, despite the fact that i have the copy of friday_1008_html in the editorial folder. My impression is that since i have been able to use the date_code to display the teaser for the news item, then i should be able to use for all other link items on this page. thanks for your care. Hamzat Kamal.

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manage_addExtFile (was: help me please)
by Dieter Maurer 11 Sep '01

11 Sep '01

The Zope community generally perfers that questions go onto the main list (zope(a)zope.org) more people can help you and the replies in the mailing list archives helps other with similar questions.... Reply goes to the list, too. Vineet Ahuja writes: > dear dieter, > i amtrying to user extfile.I am using the following my python script:- > -----------python script------------------------- > context.manage_addProduct['OFSP'].manage_addExtFile(self, id=t1, title=t2, > descr=t3, file=file, content_type='', permission_check=0, REQUEST='') > ---------------python script end------------------ "ExtFile" lives in its own product, not the "OFSP" (Object File System Product). I do not know its name precisely, but I would expect it is similar to "ExtFile". Then you would use: context.manage_addProduct['ExtFile'].manage_addExtFile(.....) I doubt that you should pass the "self". Almost surely, it is passed in implicitely. Dieter

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import ms frontapage folders
by stephanvilliger＠gmx.ch 11 Sep '01

11 Sep '01

another easy question: how can I import not only file after file, but whole folder structures from ms frontpage? thanks, stephan -- GMX - Die Kommunikationsplattform im Internet. http://www.gmx.net

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