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RE: [Zope-dev] Is _getOb() best way to grab a ref to a particular object?
by Andrew Wilcox 22 Nov '99

22 Nov '99

Right, what I'm looking for is to reference an absolute object, sort of like saying "/usr/bin/sendmail" in the filesystem. The note about avoiding an acquisition wrapper by using aq_base is helpful. Hmm, I don't know why I thought I needed _getOb(). Some test I did that confused me because the result was being rendered, and I didn't realize that was happening in the publisher. I think. Anyway, let's say I want to grab /topfolder/subfolder/myobj, and I know they exist, so I'm not worried about acquisition along the way. So what I've got now is: obj = REQUEST.PARENTS[-1].topfolder.subfolder.myobj or na_obj = REQUEST.PARENTS[-1].topfolder.subfolder.myobj.aq_base Ok, that's pretty straightforward! Thanks! Andrew At 09:25 AM 11/22/99 -0500, Brian Lloyd wrote: >> I need to grab a reference to a particular object in the ZODB from an >> external method, bypassing acquisition. Is this the right >> way to do it: >> >> def test(self, REQUEST=None): >> """doc string""" >> myobj = >> REQUEST.PARENTS[-1].aTopLevelFolder.anotherFolder._getOb('id_o >> f_myobj') >> ...do stuff with myobj: myobj.title, myobj.index_html, >> myobj.property = 123 ... > >Maybe, maybe not... _getOb will not return an acquired object, but >if the object exists it _will_ be returned as a "wrapped" object >so acquisition will be preserved in the result. I'm not clear from >your example whether this is what you want. If you want the *resulting* >object to be non-acquiring, you'll want to do something like: > >def test(self, REQUEST=None): > """ """ > # get object named 'foo' from self, but dont allow it > # to be found via acquisition. > > obj=self._getOb('foo') > > # while we know that foo is not acquired from above, it > # is still wrapped in the context of 'self', so to disable > # acquisition we need to unwrap it. > > non_aquiring_obj=obj.aq_base > > ... > >Hope this helps! > > >Brian Lloyd brian(a)digicool.com >Software Engineer 540.371.6909 >Digital Creations http://www.digicool.com > > > >

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RE: [Zope-dev] Keyword Indexes in ZCatalogs
by Alexandre Ratti 22 Nov '99

22 Nov '99

Hello, I uploaded a draft "Keyword Indexes" howto here: <http://www.zope.org/Members/AlexR/KeywordIndexes/>. It describes a simple use of keyword indexes. Please have a look and send me your feedback / corrections / additions. Cheers. Alexandre At 10:03 22/11/1999 -0500, Michel Pelletier wrote: > > Thanks for this information. I tested Keyword indexes in a > > simple keyword > > search form for ZClass documents. It works beautifully. I'll > > summarize it > > in a mini-howto. > >Thank you! > >-Michel

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Q: adding products, weird behavior
by Joerg Wittenberger 22 Nov '99

22 Nov '99

---- =_NextPart_000_01BE9BCA.1CD36B40 Hello, I'm trying to get a product straight, but I can't find how to add it's objects programatically the right way(tm). As explained somewhere (to make things worse, I can't find where I learned that anymore) I wrote a "manage_addDCDocument" method in my module, which, AFAIK, should be become a Folder method, in the hope I could use it like any other e. g., manage_addFile. When I add such an object via the web, I can actually derive instances of it (even though I've been wondering, which weird operations I have to perform inside the object constructor, to find the correct DestinationURL) but now I tried to use a script derived from load_site.py I see "manage_addDCDocument Not Found" error. The load_site.py adds new objects like this: call(object.manage_addFile, id=name, file='') Where object points to the folder, within which the new File object is to be placed. I couldn't make head or tail of the code surrounding the problem, base on wild guess (actually reading the manage_addXYZFom code of ZClass products) I found the following kludge to work around the problem. It's so terribly ugly... I beg for help: o_kludge = object.__class__(object.url+'/manage_addProduct/docstore', # ==> F***^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ username=object.username, password=object.password) call(o_kludge.manage_addDCDocument, id=name, data='') This o_kludge object shouldn't been needed. What might I have missed? For reference I attach 3 files: __init__.py : the product initialization DCDocument.py : the object class I want to use (mirrors the hirarchy in the file system and provides dublin core meta data in rdf format) docstore.py : command line tool to store and retrieve files. Any help appreciated. /Jerry -- You can have it done fast, you can have it done cheap, and you can have it done well. --- But you can only have two of those at once. ---- =_NextPart_000_01BE9BCA.1CD36B40 Content-Type: text/plain; name="__init__.py" # have fun from Globals import HTMLFile import DCDocument, Feature, User import sys from zLOG import LOG def initialize(context): perm = 'Add DCDocuments' try: context.registerClass( Feature.Feature, permission='Add IBM Features', constructors=[Feature.manage_addFeature], #icon='' ) except: print "%s: %s" % (sys.exc_type, sys.exc_value) print 'scheisse' try: context.registerClass( User.IBMUserFolder, constructors= (User.manage_addUserFolder,), permission='Add Users', #icon='' ) except: print "%s: %s" % (sys.exc_type, sys.exc_value) print 'scheisse' context.registerClass( DCDocument.DCDocument, permission=perm, constructors=(DCDocument.manage_addDCDocumentForm, DCDocument.manage_addDCDocument), #icon='' ) context.registerBaseClass(DCDocument.DCDocument) ---- =_NextPart_000_01BE9BCA.1CD36B40 Content-Type: text/plain; name="DCDocument.py" """ We add documentation here the other day. """ from OFS.Folder import Folder import Globals import ExtensionClass import DocumentTemplate from Globals import HTML, HTMLFile, MessageDialog from DateTime import DateTime import os, string from zLOG import LOG def manage_addDCDocument(self, id, file='', REQUEST=None): """ Create a DCDocument """ if type(file) is not type(''): file=file.read() self._setObject(id, DCDocument(id, data=file, REQUEST=REQUEST)) return self.manage_main(self, REQUEST, update_menu=1) manage_main=HTMLFile('documentEdit', globals()) manage_addDCDocumentForm=HTMLFile('addDCDocumentForm', globals()) # This should be somewhere else! def _dropPathSep(path): if path[-1] == os.sep: return path[:-1] return path the_publisher = 'IBM Deutschland GmbH' the_rights = 'all rights reserved' class DCDocument(Folder): """ jojo """ meta_type = 'DCDocument' description = '' index_html=None # Prevent accidental acquisition _properties=({'id':'title', 'type':'string', 'mode':'w'}, {'id':'creator', 'type':'string', 'mode':'w'}, # The subject should better be 'tokens' type {'id':'subject', 'type':'string', 'mode':'w'}, {'id':'description', 'type':'text', 'mode':'w'}, {'id':'publisher', 'type':'string', 'mode':'w'}, #{'id':'contributor', 'type':'string', 'mode':'w'}, {'id':'date', 'type':'date', 'mode':''}, #{'id':'type', 'type':'string', 'mode':'w'}, #{'id':'format', 'type':'string', 'mode':'w'}, {'id':'identifier', 'type':'string', 'mode':''}, #{'id':'source', 'type':'string', 'mode':'w'}, #{'id':'language', 'type':'string', 'mode':'w'}, #{'id':'relation', 'type':'string', 'mode':'w'}, #{'id':'coverage', 'type':'string', 'mode':'w'}, {'id':'rights', 'type':'string', 'mode':'w'}, ) _dc_properties = _properties def _init_identifier_ininit(self, id, REQUEST): self.id=id self.parents = REQUEST['PARENTS'] self.parents.reverse() self.parents=self.parents[2:-2] psv=map(lambda i: i.id, self.parents) self._setPropValue('identifier', string.join(psv, '/') + '/' + id) def _init_other(self, REQUEST): self._setPropValue('creator', `REQUEST.AUTHENTICATED_USER`) self._setPropValue('date', DateTime().Date()) self._setPropValue('publisher', the_publisher) self._setPropValue('rights', the_rights) self.locked = None self.manage_changeProperties(REQUEST) def __init__(self, id, data=None, REQUEST=None): self._init_identifier_ininit(id, REQUEST) self._init_other(REQUEST) if REQUEST: self.data=REQUEST['data'] else: self.data=data if type(self.data) is not type(''): self.data=self.data.read() self._saveData() self._saveProperties() return '' def __str__(self): return self.data def _SavePath(self, ext='.sgml', base='/tmp'): dirname = os.path.join(base, string.join(map(lambda i: i.id, self.parents), '/')) if not os.path.exists(dirname): os.makedirs(dirname) return os.path.join(dirname, self.id) + ext def _saveData(self, ext='.sgml'): path = self._SavePath(ext=ext) try: f=open(path, 'wb') except: raise f.write(self.__str__()) f.close() def _saveProperties(self, ext='.rdf'): path = self._SavePath(ext=ext) try: f=open(path, 'w') except: raise f.write(self.RDF()) f.close() def get_size(self): return len(self.__str__()) def PrincipiaSearchSource(self): "Support for searching - the document's contents are searched." LOG('Hier', 0, self.data) return self.data _rdf_header= """<?xml version="1.0" ?> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.0/" > """ def RDF(self, REQUEST=None): ' returns the properties as xml ' md=self._rdf_header helpvariable=map(lambda i: i.id, self.parents) md = md + ' <rdf:Description about="/' + getattr(self, 'identifier') + '">\n' for p in self._dc_properties: n = p['id'] try: v = getattr(self, n) except AttributeError: v = None if v and v != '': md=(md + ' <dc:' + n + '>' + DocumentTemplate.DT_Util.html_quote(v) + '</dc:' + n + '>\n') md = (md +' <dc:date>' + self.bobobase_modification_time().Date() + '</dc:date>\n') if REQUEST is not None: REQUEST.RESPONSE.setHeader('Content-Type', 'text/xml') return md+' </rdf:Description>\n</rdf:RDF>\n' _size_changes={ 'Bigger': (5,5), 'Smaller': (-5,-5), 'Narrower': (0,-5), 'Wider': (0,5), 'Taller': (5,0), 'Shorter': (-5,0), } def _er(self,SUBMIT,dtpref_cols,dtpref_rows,REQUEST): dr,dc = self._size_changes[SUBMIT] rows=max(1,string.atoi(dtpref_rows)+dr) cols=max(40,string.atoi(dtpref_cols)+dc) e=(DateTime('GMT') + 365).rfc822() resp=REQUEST['RESPONSE'] resp.setCookie('dtpref_rows',str(rows),path='/',expires=e) resp.setCookie('dtpref_cols',str(cols),path='/',expires=e) def manage_edit(self, data, SUBMIT='Change',dtpref_cols='50', dtpref_rows='20', REQUEST=None): """ tbc """ if `REQUEST.AUTHENTICATED_USER` == 'Anonymous User': REQUEST.RESPONSE.setStatus(403) return MessageDialog(title="Nicht authorisiert", message="Nicht authorisiert") if `REQUEST.AUTHENTICATED_USER` != self.locked: REQUEST.RESPONSE.setStatus(423) return MessageDialog(title="Object locked", message=(getattr(self, 'identifier') + " ist gelocked durch " + `self.locked`)) if self._size_changes.has_key(SUBMIT): self._er(SUBMIT,dtpref_cols,dtpref_rows,REQUEST) if type(data) is not type(''): data=data.read() self.data=data self._saveData() self.locked=None if REQUEST: REQUEST.RESPONSE.redirect(REQUEST['URL1'] + '/manage_editForm') def manage_getLock(self, REQUEST): " tbc " if `REQUEST.AUTHENTICATED_USER` == 'Anonymous User': REQUEST.RESPONSE.setStatus(403) return MessageDialog(title="Nicht authorisiert", message="Nicht authorisiert") if not hasattr(self, 'locked') or self.locked is None or `REQUEST.AUTHENTICATED_USER` == self.locked: self.locked = `REQUEST.AUTHENTICATED_USER` REQUEST.RESPONSE.redirect(REQUEST['URL1'] + '/manage_editForm') def manage_unLock(self, REQUEST): # " tbc " if `REQUEST.AUTHENTICATED_USER` == 'Anonymous User': REQUEST.RESPONSE.setStatus(403) return MessageDialog(title="Nicht authorisiert", message="Nicht authorisiert") if `REQUEST.AUTHENTICATED_USER` == self.locked: self.locked = None REQUEST.RESPONSE.redirect(REQUEST['URL1'] + '/manage_editForm') def manage_editProperties(self, REQUEST): """ edit the PRoperties and write the copy into the meta file """ Folder.manage_editProperties(self, REQUEST) self._saveProperties() def index_html(self, REQUEST, RESPONSE): """ render the document, i.e., give away the plain text """ if REQUEST: REQUEST.RESPONSE.setHeader('Content-Type', 'text/xml') return self.data manage_editForm=HTMLFile('documentEdit', globals()) manage_options=( {'label':'Contents', 'action':'manage_editForm'}, {'label':'Children', 'action':'manage_main'}, {'label':'View', 'action':''}, {'label':'Properties', 'action':'manage_propertiesForm'}, {'label':'Import/Export', 'action':'manage_importExportForm'}, {'label':'Security', 'action':'manage_access'}, {'label':'Undo', 'action':'manage_UndoForm'}, #{'label':'Find', 'action':'manage_findFrame', 'target':'manage_main'}, ) __ac_permissions__=( ('View management screens', ('manage_editForm', 'manage', 'manage_main', 'manage_uploadForm', 'PrincipiaSearchSource')), ('Change DCDocuments', ('manage_edit', 'manage_upload', 'PUT')), ('View', ('__call__', '')), ) Globals.default__class_init__(DCDocument) ---- =_NextPart_000_01BE9BCA.1CD36B40 Content-Type: text/plain; name="docstore.py" #!/usr/bin/python import sys, getopt, os, posix, string usage = """docstore {get|ext|put|create} id...""" passwordfile = '/.priv/docstore-password' url = 'http://dev.ffm.tc:9080/ffm.tc' verbose = 1 def main(): try: cmd = sys.argv[1] except IndexError: print usage sys.exit(1) opts, args = getopt.getopt(sys.argv[2:], '') if not args: print usage sys.exit(1) sys.path.insert(0,'./lib/python') import ZPublisher.Client global ServerError ServerError=ZPublisher.Client.ServerError user = os.environ['USER'] try: f = open(os.environ['HOME']+passwordfile) password = f.read() except IOError: print sys.argv[0] + " can't read " + passwordfile sys.exit(1) object=ZPublisher.Client.Object(url, username=user, password=password) for f in args: if cmd == 'ext' or cmd == 'get': get_file(object, cmd, f) elif cmd == 'put': upload_file(object, cmd, f) elif cmd == 'create': upload_file(object, cmd, f) elif cmd == 'unlock': print "Unlock unwork" elif cmd == 'locate': print "locate unwork" elif cmd == 'ls': print 'ls unwork' else: print usage def call(f, *args, **kw): # Call a function ignoring redirect bci errors. try: apply(f,args, kw) except ServerError, v: if str(v)[:1] != '3': raise sys.exc_info()[0], sys.exc_info()[1], sys.exc_info()[2] def get_file(object, cmd, f): dir, name = os.path.split(f) root, ext = os.path.splitext(name) if ext in ('.sgml', '.text', '.txt'): name = root object = object.__class__(object.url+'/'+name, username=object.username, password=object.password) if cmd == 'get': call(object.manage_getLock) try: posix.chmod(f, 0644) except: pass out = open(f, "w") data = object.index_html()[1] out.write(data) out.close() #n, e = os.path.splitext(f) #out = open(n + '.rdf', 'w') #data = object.RDF()[1] #out.write(data) #out.close() def upload_file(object, cmd, f): if os.path.isdir(f): return upload_dir(object, cmd, f) dir, name = os.path.split(f) root, ext = os.path.splitext(name) if ext in ('file', 'dir'): ext='' else: if ext and ext[0] in '.': ext=ext[1:] if ext and globals().has_key('upload_'+ext): if verbose: print 'upload_'+ext, f return globals()['upload_'+ext](object, cmd, f) if verbose: print 'skip_file', f, ext #call(object.manage_addFile, id=name, file=open(f)) def upload_dir(object, cmd, f): if verbose: print 'upload_dir', f dir, name = os.path.split(f) if cmd == 'create': o_kludge = object.__class__(object.url+'/manage_addProduct/docstore', username=object.username, password=object.password) call(o_kludge.manage_addDCDocument, id=name, data='') object=object.__class__(object.url+'/'+name, username=object.username, password=object.password) for n in os.listdir(f): upload_file(object, cmd, os.path.join(f,n)) def upload_sgml(object, cmd, f): dir, name = os.path.split(f) name, ext = os.path.splitext(name) input=open(f) input=input.read() if cmd == 'create': o_kludge = object.__class__(object.url+'/manage_addProduct/docstore', username=object.username, password=object.password) call(o_kludge.manage_addDCDocument, id=name, data=input) else: object=object.__class__(object.url+'/'+name, username=object.username, password=object.password) call(object.manage_edit, data=input) posix.chmod(f, 0444) upload_txt=upload_sgml upload_text=upload_sgml upload_tex=upload_sgml def upload_ps(object, cmd, f): dir, name = os.path.split(f) call(object.manage_addFile, id=name, file=open(f)) upload_eps=upload_ps upload_fig=upload_ps def upload_gif(object, cmd, f): dir, name = os.path.split(f) call(object.manage_addImage, id=name, file=open(f)) upload_jpg=upload_gif upload_png=upload_gif if __name__=='__main__': main() ---- =_NextPart_000_01BE9BCA.1CD36B40--

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RE: [Zope-dev] Keyword Indexes in ZCatalogs
by Michel Pelletier 22 Nov '99

22 Nov '99

> -----Original Message----- > From: Alexandre Ratti [mailto:alex@gabuzomeu.net] > Sent: Sunday, November 21, 1999 3:38 PM > To: zope-dev(a)zope.org > Cc: zen(a)cs.rmit.edu.au > Subject: Re: [Zope-dev] Keyword Indexes in ZCatalogs > > > Hello, > > > Thanks for this information. I tested Keyword indexes in a > simple keyword > search form for ZClass documents. It works beautifully. I'll > summarize it > in a mini-howto. Thank you! -Michel

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RE: [Zope-dev] ZServer FastCGI patch for IRIX (and others?)
by Brian Lloyd 22 Nov '99

22 Nov '99

> Below is a patch to let ZServer's FastCGI support work with > FastCGI client > implementations that don't properly close the STDIN > sub-stream. On the > IRIX/Apache/cgi-fcgi combo used where I work, the client side > doesn't seem > to know when it's done sending STDIN data, and thus the > ZServer side simply > hangs forever waiting for it. The patch below makes ZServer > ignore STDIN > altogether if there is no Content-Length, and also stop > looking for more > STDIN data if Content-Length or more bytes have already been read. Thanks - I've checked this in. Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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RE: [Zope-dev] Is _getOb() best way to grab a ref to a particular object?
by Brian Lloyd 22 Nov '99

22 Nov '99

> I need to grab a reference to a particular object in the ZODB from an > external method, bypassing acquisition. Is this the right > way to do it: > > def test(self, REQUEST=None): > """doc string""" > myobj = > REQUEST.PARENTS[-1].aTopLevelFolder.anotherFolder._getOb('id_o > f_myobj') > ...do stuff with myobj: myobj.title, myobj.index_html, > myobj.property = 123 ... Maybe, maybe not... _getOb will not return an acquired object, but if the object exists it _will_ be returned as a "wrapped" object so acquisition will be preserved in the result. I'm not clear from your example whether this is what you want. If you want the *resulting* object to be non-acquiring, you'll want to do something like: def test(self, REQUEST=None): """ """ # get object named 'foo' from self, but dont allow it # to be found via acquisition. obj=self._getOb('foo') # while we know that foo is not acquired from above, it # is still wrapped in the context of 'self', so to disable # acquisition we need to unwrap it. non_aquiring_obj=obj.aq_base ... Hope this helps! Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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Overriding __getattr__ for requests only.
by Jeff K. Hoffman 22 Nov '99

22 Nov '99

Hello, everyone. I am trying to write a new subclass of OFS.Folder (as a python product) to do the following: When a user requests /myFolder/index_html, myFolder will search itself, then its list of 'parents', returning the attribute from one of them if they have it, and raising an AttributeError if not. I have had some moderate success by overloading __getattr__ as follows: def __getattr__(self, name): try: return OFS.Folder.Folder.__getattr__(self, name) except: for parent in self.parentList: try: return getattr(parent, name) except AttributeError: pass raise AttributeError, name This works, in the sense that I can "inherit" features from the parents, but I think there are some fundamental flaws in my approach for the following reasons: o I would like for the user to still be able to create attributes in my folder with the same name as one of the attributes in the parents. This does not work, currently. If I define index_html in a "parent" folder and attempt to do the same in a "child", I get a 'The id index_html is invalid - it is already in use.' error. o Whenever I click on a folder which has one or more "parents" in the top-level management interface (http://localhost/manage) I get a NameError for 'n_'. This does not occur, however, when I manage my folder via http://localhost/myFolder/manage. So, my question is, is there any way for me to achieve this behavior without causing the problems above? I am thinking there must be a way to search the parents if AND ONLY IF it is for an incoming web request. I have posted the code to zope.org at: http://www.zope.org/Members/jkhoffman/TransFolder.tgz Once you install the product, click the 'Parents' tab to assign a parent. This thing is barely working, and is one of my first python products, so please don't laugh at me too much. :) If anyone can give me a push in the right direction I would be extremely grateful. --Jeff

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Problem with attributes and/or aquisition?
by Bill Anderson 22 Nov '99

22 Nov '99

OK, in a dtml-in iteration of PARENTS[-1], I have the following code: ... <dtml-if "meta_type=='Folder'"> <dtml-if "_.hasattr('_[id]','SiteMenu')"> <dtml-in "_[id].objectValues(['Folder'])"> <dtml-if "_.hasattr('_[id]','SiteMenu')"> ...do stuff with RXML and tables ... And In my root folder, I have anumber of folders, some with SiteMenu, some without. Problem: None of the folders appear in my menulist. If I negate the condition (<dtml-if "not ...">), all my folders show up. I can't use <dtml-if SiteMenu> because this will be called from within a folder (sometimes) that has that property set. I don't recall having this problem before .. but it has been a long night/morning. Anyone know what the heck I am missing (Besides several hours of needed sleep)? IIRC -- "They laughed at Columbus, they laughed at Fulton, they laughed at the Wright brothers. But they also laughed at Bozo the Clown." -- Carl Sagan

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An even smaller XMLDocument patch
by Gabor Melis 22 Nov '99

22 Nov '99

Hi gents, I took the easy way out (my problem was posted a few days ago) and avoiding confrontation with ISO-8859-* encodings I just told the browser to use utf-8. It was done to documentEdit.dtml and elementEdit.dtml and to all my pages with xml input or output in them. Of course it means that one must encode pages with XML stuff in them in utf-8. For the management pages it is OK since they contain only ASCII stuff. For your pages though ... Still, I think it is justifiable and probably right. Gabor

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FYI: A possible bug in manage_pasteObjects (submitted to the Collector)
by Itamar Shtull-Trauring 22 Nov '99

22 Nov '99

It looks like manage_afterClone should be called with the original object passed to the function, but in fact manage_pasteObjects passes the cloned object, which is rather pointless. -------- Original Message -------- Date: Mon, 22 Nov 1999 12:22:05 +0200 (IST) From: Noa Harvey <nharvey @ pob.huji.ac.il> In lib/OFS/CopySupport.py In the function manage_pasteObjects the following line appears: ob=ob._getCopy(self) ob.manage_afterClone(ob) Passing ob as an argument doesn't make sense because the function is being called on ob, (so self is already ob) it would make more sense to to something along the lines of: original_ob=ob ob=ob._getCopy(self) ob.manage_afterClone(original_ob) That way REQUEST and other useful information will be available when overriding manage_afterClone.

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