July 1999 - Zope-Dev

Patch: Add versatile "tag" method to Image
by bruce＠perens.com 14 Jul '99

14 Jul '99

The Image class has a str() method that outputs an <IMG ...> tag with an absolute URL, and with the height, width, and alternate text set for you. This is a very efficient way to embed images in your documents, because the page renders better when the height and width of the image are given and you don't have to hard-code them into your document, and the absolute URL uses the web browser's cache efficiently. However, I found this method constraining in that I could not add attributes such as "BORDER=0" to the tag. This patch adds a more versatile tag() method to Image. Arguments to the tag() method can be any of the usual IMG attributes. Defaults are provided for height and width (again, set from the image file) and For example:  ... will result in the image being rendered with the given attributes. Can we get something like this included in the main Zope thread? Thanks Bruce Perens --- Zope.old/lib/python/OFS/Image.py Mon May 24 20:49:12 1999 +++ Zope-2.0.0a3-src/lib/python/OFS/Image.py Tue Jul 13 18:52:51 1999 @@ -133,7 +133,7 @@ ('View management screens', ('manage','manage_main', 'manage_uploadForm',)), ('Change Images and Files', ('manage_edit','manage_upload','PUT')), - ('View', ('index_html','view_image_or_file','getSize','getContentType', + ('View', ('index_html','tag','view_image_or_file','getSize','getContentType', '')), ('FTP access', ('manage_FTPstat','manage_FTPget','manage_FTPlist')), ('Delete objects', ('DELETE',)), @@ -363,7 +363,35 @@ self.absolute_url(), width, height, self.title_or_id() ) + def tag(self, height=None, width=None, alt=None, **args): + """ + Generate an HTML IMG tag for this image, with customization. + Arguments to self.tag() can be any valid attributes of an IMG tag. + 'src' will always be an absolute pathname, to prevent redundant + downloading of images. Defaults are applied intelligently for + 'height', 'width', and 'alt'. + """ + if not alt: + alt=self.title_or_id() + + string='<img src="%s" alt="%s"' % (self.absolute_url(), alt) + + if not height: + height = self.height + if height: + string = "%s height=%s" % (string, height) + + if not width: + width = self.width + if width: + string = "%s width=%s" % (string, width) + + for key in args.keys(): + value = args.get(key) + string = "%s %s=%s" % (string, key, value) + return string + '>' + def cookId(id, title, file): if not id and hasattr(file,'filename'):

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possible problem in cPickleCache.c
by Robin Becker 14 Jul '99

14 Jul '99

My C compiler gives me a warning which on inspection I believe about an uninitialized variable usage at cPickleCache.c line 392. The code is static PyObject * cc_invalidate(ccobject *self, PyObject *args) { PyObject *inv, *key, *v; int i; if (PyArg_ParseTuple(args, "O!", &PyDict_Type, &inv)) { for (i=0; PyDict_Next(inv, &i, &key, &v); ) if (key==Py_None) { /* Eek some nitwit invalidated everything! */ for (i=0; PyDict_Next(self->data, &i, &key, &v); ) _invalidate(self, key); break; } else _invalidate(self, key); PyDict_Clear(inv); } else { PyErr_Clear(); UNLESS (PyArg_ParseTuple(args, "O", &inv)) return NULL; if (PyString_Check(inv)) _invalidate(self, key); /*possible error*/ else if (inv==Py_None) /* All */ for (i=0; PyDict_Next(self->data, &i, &key, &v); ) _invalidate(self, key); else { int l; -- Robin Becker

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RE: [Zope-dev] ZClass Meta Types
by Michel Pelletier 13 Jul '99

13 Jul '99

> -----Original Message----- > From: Jason Spisak [mailto:webmaster@mtear.com] > Sent: Tuesday, July 13, 1999 4:52 PM > To: Michel Pelletier > Cc: zope-dev(a)zope.org > Subject: Re: [Zope-dev] ZClass Meta Types > > > > > > Jim checked in a change this morning that should fix this. > > > > -Michel > > > > Michel, > > I did a CVS update at 9 am or so PST and whe I changes the meta-type > inside the ZClass, it still doesn't change in the add list, or t he > SubObjects list. Do I need to give it another go? > I'll look into this: > Also, I was wondering if you got my last mail about the Catalog not > indexing the objects (Or adding them to the catalog at all) > unless I use > the "Find Items to Catalog" tab. I have tried the DTML route, but you > had said that would not be as efficient so (and it did work > :). I'm now > using an external method called index_object, drawn verbatim from the > mail you sent. > > def index_object > try: self.Catalog.catalog_object(self,self.url()) > except: pass > Ah I neglected to mention that your Findable class needs to define the url method. ;) It should be an external method, just like index_object: def url(self, ftype=urllib.splittype, fhost=urllib.splithost): """Return a SCRIPT_NAME-based url for an object.""" if hasattr(self, 'DestinationURL') and \ callable(self.DestinationURL): url='%s/%s' % (self.DestinationURL(), self.id) else: url=self.absolute_url() type, uri=ftype(url) host, uri=fhost(uri) script_name=self.REQUEST['SCRIPT_NAME'] __traceback_info__=(`uri`, `script_name`) if script_name: uri=filter(None, string.split(uri, script_name))[0] uri=uri or '/' if uri[0]=='/': uri=uri[1:] return uri > I use that external method in the add constructor of the ZClass, > > >  > >  > >  > >  > > It creates the object, but does not add it to the catalog. > Is this a bug? > > All my best, > > Jason Spisak > webmaster(a)mtear.com >

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RE: [Zope-dev] Patch: Add versatile "tag" method to Image
by Michel Pelletier 13 Jul '99

13 Jul '99

> -----Original Message----- > From: bruce(a)perens.com [mailto:bruce@perens.com] > Sent: Tuesday, July 13, 1999 3:16 PM > To: zope-dev(a)zope.org > Subject: [Zope-dev] Patch: Add versatile "tag" method to Image > > > The Image class has a str() method that outputs an <IMG ...> > tag with an > absolute URL, and with the height, width, and alternate text > set for you. > This is a very efficient way to embed images in your > documents, because the > page renders better when the height and width of the image > are given and you > don't have to hard-code them into your document, and the > absolute URL uses the > web browser's cache efficiently. > > However, I found this method constraining in that I could not > add attributes > such as "BORDER=0" to the tag. This patch adds a more > versatile tag() method > to Image. Arguments to the tag() method can be any of the usual IMG > attributes. Defaults are provided for height and width > (again, set from > the image file) and For example: > >  > > ... will result in the image being rendered with the given attributes. > > Can we get something like this included in the main Zope thread? > Tnanks, this is a good idea. I just checked it in and it will be in the next release (probably beta 1). For CVS users it is there now. -Michel

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RE: [Zope-dev] ZClass Meta Types
by Michel Pelletier 13 Jul '99

13 Jul '99

> -----Original Message----- > From: Jason Spisak [mailto:webmaster@mtear.com] > Sent: Monday, July 12, 1999 7:14 PM > To: zope-dev(a)zope.org > Subject: [Zope-dev] ZClass Meta Types > > > Zopists, > > When I add a New ZClass and then Change it's meta_type name, that > changes doesn't take place in the pull down add menus. even > after a pack > and restart. Anybody else experienceing that? It changes in > the Basic > tab, but it doesn't really change. > Jim checked in a change this morning that should fix this. -Michel > Jason Spisak > webmaster(a)mtear.com > > _______________________________________________ > Zope-Dev maillist - Zope-Dev(a)zope.org > http://www.zope.org/mailman/listinfo/zope-dev > > (For non-developer, user-level issues, use the companion list, > zope(a)zope.org, http://www.zope.org/mailman/listinfo/zope ) >

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ANNOUNCE: Zope 2.0 alpha 4
by Jim Fulton 13 Jul '99

13 Jul '99

Zope 2.0 alpha 4 is available (finally) at: http://www.zope.org/Download/Releases/Zope-2.0.0a4 The changes are listed there. Jim -- Jim Fulton mailto:jim@digicool.com Python Powered! Technical Director (888) 344-4332 http://www.python.org Digital Creations http://www.digicool.com http://www.zope.org Under US Code Title 47, Sec.227(b)(1)(C), Sec.227(a)(2)(B) This email address may not be added to any commercial mail list with out my permission. Violation of my privacy with advertising or SPAM will result in a suit for a MINIMUM of $500 damages/incident, $1500 for repeats.

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win32 BTree seg
by Robin Becker 13 Jul '99

13 Jul '99

I'm getting null pointers in BTree.c in _bucket_set at line 798 apparently self->data is NULL. This is happening when I try out the ZClass tutorial example at the point of adding the ZClass. if(max != i) i++; d=self->data+i; /*self->data is 0*/ if(self->len > i) memmove(d+1,d,sizeof(Item)*(self->len-i)); #ifdef INTKEY d->key=ikey; #else d->key=key; Py_INCREF(key); #endif #ifdef INTVAL d->value=iv; #else d->value=v; Py_INCREF(v); #endif -- Robin Becker

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Re: DCOracle not handling Oracle LONG/LONG RAW datatype
by Andreas Jung 13 Jul '99

13 Jul '99

On Mon, Jul 12, 1999 at 09:23:20AM -0700, Larry Gwinn wrote: > Hello All, > > I have been evaluating the DCOracle extension from > http://www.zope.org/Download/DCOracle/ and have run into an issue when > querying tables with a LONG or LONG RAW data type and I was wondering if > anybody else has encountered this problem. If you execute a SQL select > statement that retrieves from a column that is defined as a LONG or LONG > RAW datatype, when you perform a fetchone you can only successfully > retrieve the first row. The next fetchone will cause a "IndexError: 1" > to occur. This exception is being thrown by the Buffer_item function > located in the Buffer.c file. > I can confirm this behaviour. I always get the following traceback when I try to access a column of type LONG: Traceback (innermost last): File "./test.py", line 25, in ? data = ORA.curs.fetchall() File "/ojs/home/ojs/tools/python-1.5.2/lib/python1.5/DCOracle/ociCurs.py", line 351, in fetchall v=f(1) File "/ojs/home/ojs/tools/python-1.5.2/lib/python1.5/DCOracle/ociCurs.py", line 311, in fetchone if ind[ai] < 0: v=MissingValue IndexError: 1 Testing env: Solaris 2.6, Oracle 7.3.3.6, DCOracle 1.2.1, Python 1.5.2 Cheers, Andreas -- _\\|//_ (' O-O ') ------------------------------ooO-(_)-Ooo-------------------------------------- Andreas Jung, Saarbrücker Zeitung Verlag und Druckerei GmbH Saarbrücker Daten-Innovations-Center Gutenbergstr. 11-23, D-66103 Saarbrücken, Germany Phone: +49-(0)681-502-1563, Fax: +49-(0)681-502-1509 Email: ajung(a)sz-sb.de (PGP key available) -------------------------------------------------------------------------------

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ZClass Meta Types
by Jason Spisak 12 Jul '99

12 Jul '99

Zopists, When I add a New ZClass and then Change it's meta_type name, that changes doesn't take place in the pull down add menus. even after a pack and restart. Anybody else experienceing that? It changes in the Basic tab, but it doesn't really change. Jason Spisak webmaster(a)mtear.com

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Re: [Zope-dev] Re: Subclassing
by Kevin Dangoor 12 Jul '99

12 Jul '99

Hi Jason, Make sure that the ZClasses are all within the same Product. In your initial message, you had stated that your ZClass will end up getting quite large if all of the subclasses have to be contained within it... in reality, they only have to be in the same Product. So your Product can get quite large. Kevin --- Jason Spisak <webmaster(a)mtear.com> wrote: > Brian, > > I just did a cvs update as of 12:00 PM PST and I > still don't get any of > the ZClasses which I create in the base class select > box. Should I > submit this to the Collector? > > Jason Spisak > webmaster(a)mtear.com > > _______________________________________________ > Zope-Dev maillist - Zope-Dev(a)zope.org > http://www.zope.org/mailman/listinfo/zope-dev > > (For non-developer, user-level issues, use the > companion list, > zope(a)zope.org, > http://www.zope.org/mailman/listinfo/zope ) > > > _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com

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