October 2000 - Zope - Zope lists

Disadvantages of using DTML (fwd)
by Jason Spisak 10 Oct '00

10 Oct '00

Andy, I am actually just starting working with it. As long as I can have help futzing with the aq_parent stuff to get it to work, I'll be using it in my intranet app. My real desire is to find a way to construct these type of html objects from html. Like a poor man's HyperDOM. :) > Cool, do I see a Zope product coming up? > > ----- Original Message ----- > From: "Jason Spisak" <444(a)hiretechs.com> > To: "Andy McKay" <andym(a)ActiveState.com> > Sent: Tuesday, October 10, 2000 5:13 AM > Subject: Re: [Zope] Disadvantages of using DTML > > > > Andy: > > > > Actually, I have been playing with it. > > What it does is create HTML, XHTML, XML from python objects like so: > > > > p = TABLE(bgcolor="#00000", border="0", cellpadding="1", > > TR( > > TD('my stuff goes here'))) > > > > print p > > > > <TABLE bgcolor="#00000" border="0" cellpadding="1"> > > <TR> > > <TD>my stuff goes here</TD></TR></TABLE> > > > > So I just create bit and pieces that get called to form a UI. > > Aquisition works too. I have a property in a containing folder, that I > > called as the bgcolor of the table and it worked fine. > > > > All my best, > > > > > > > The docs I quickly looked at suggested it just parsed XHTML into HTML, > > > nothing more. It would be interesting useful if it did do so much > more... Im > > > assuming there would be a little bit of Zope integration to do... > > > > > > ----- Original Message ----- > > > From: "Jason Spisak" <444(a)hiretechs.com> > > > To: "Andy McKay" <andym(a)ActiveState.com> > > > Sent: Tuesday, October 10, 2000 4:22 AM > > > Subject: Re: [Zope] Disadvantages of using DTML > > > > > > > > > > Andy: > > > > > > > > Since it would be python, can you not call objects, run python, and > lots > > > of > > > > stuff? ;) > > > > > > > > > > > > > You lose out on all the wondeful help you get from this mailing list > :) > > > > > > > > > > But seriously this is a html generator... dtml is a great deal more > than > > > > > just a html formatter, it can call objects, run python and lots of > > > stuff. > > > > > > > > > > ----- Original Message ----- > > > > > From: "Jason Spisak" <444(a)hiretechs.com> > > > > > To: <zope(a)zope.org> > > > > > Sent: Tuesday, October 10, 2000 2:43 AM > > > > > Subject: [Zope] Disadvantages of using DTML > > > > > > > > > > > > > > > > Zopists, > > > > > > > > > > > > Can anyone tell me off hand any big disadvantages to not using > DTML > > > > > > (Caching, etc...) and using a package like HyperText > > > > > > > > > > > > http://dustman.net/andy/python/HyperText > > > > > > > > > > > > to produce html display for your objects, and use python to > process > > > it? > > > > > > > > > > > > > > > > > > Jason Spisak > > > > > > 444(a)hiretechs.com > > > > > > > > > > > > _______________________________________________ > > > > > > 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 ) > > > > > > > > > > > > > > > > > > > > > > > All my best, > > > > > > > > Jason Spisak > > > > > > > > > > > > > Jason Spisak > > > Jason Spisak 444(a)hiretechs.com

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Fighting htmllib in external method
by Jason Spisak 10 Oct '00

10 Oct '00

Jonothan Farr, Thanks very much! I am new to Python. I coded my first Zope app in entirely DTML, so now I'm moving deeper. That's a handy thing to have. All my best, Jason Spisak 444(a)hiretechs.com > Try using a StringIO object as your file. > > import htmllib > import formatter > from cStringIO import StringIO > > def index(self, html): > file = StringIO() > fmtr = formatter.AbstractFormatter(formatter.DumbWriter(file)) > p = htmllib.HTMLParser(fmtr) > p.feed(html) > file.seek(0) > return file.read() > > > ----- Original Message ----- > From: "Jason Spisak" <444(a)hiretechs.com> > To: <zope(a)zope.org> > Sent: Tuesday, October 10, 2000 2:47 AM > Subject: [Zope] Fighting htmllib in external method > > > > Howdy Zopsters, > > > > I want to catalog some html files but I want to strip the html tags out. > > htmlparser does a good job of that, but when I try to acces that from an > > external method, I run into trouble. > > > > import htmllib > > import formatter > > > > def index(self, html): > > fmtr = formatter.AbstractFormatter(formatter.DumbWriter(file)) > > p = htmllib.HTMLParser(fmtr) > > return p.feed(html) > > > > Since the DumbWriter uses stdout, this returns None. When I try to write > > to a temporary file, or pipe I get 'bad file descriptor' errors because of > > the way external method function I guess. Any help would really be > > appreciated. > > > > All my best, > > > > > > Jason Spisak > > 444(a)hiretechs.com > > > > _______________________________________________ > > 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 ) > > > > > _______________________________________________ > 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 ) >

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Still need help about Product namespace
by Pierre-Julien Grizel 10 Oct '00

10 Oct '00

Hi, I still need help about my product needing to know its namespace... Look at the following piece of DTML Meth/Doc : <dtml-let STRING="'Hello, world !'"> <dtml-var MyProduct> </dtml-let> Right. MyProduct is my product's instance, defining the following method : def __call__ (self, REQUEST=None): if REQUEST is None: if kw: REQUEST=kw else: if hasattr(self, 'REQUEST'): REQUEST=self.REQUEST else: REQUEST={} print STRING This raises a key error. I MUST get the STRING variable from the '_' namespace, but how can I pass IMPLICITLY this namespace to my product ??? Is there a way to acquire _ ??? Many thanks, P.-J. -- If the only tool you have is a hammer, you tend to see every problem as a nail. Si le seul outil dont vous disposez est un marteau, vous avez tendance à voir chaque problème comme un clou. --Abraham Maslow

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Web statistics
by Stephan Goeldi 10 Oct '00

10 Oct '00

Is there something like webalizer for Zope? I would like to create a statistic of my website's visits. _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com.

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Re: [Zope] dtml-tree advice, please
by Dieter Maurer 10 Oct '00

10 Oct '00

Brian Withun writes: > I have two ZClasses. One ("Album") is folderish, and serves as a photo > album. The other ("Photo") isn't and serves as a photo in an Album. Albums > can contain only Albums and Photos. > > I would like to have a dtml-tree represent this hierarchy of Albums and > Photos. > > The Question: > ------------- > > should I use > > <dtml-tree branches_expr="objectValues('Album')" .. > > Things to consider: > ------------------- > > I need the branches to represent two different meta types, Album and Photo. > If I use branches_expr="objectValues('Album') I'll see the tree rendered > with only Albums, and no Photos shown. You may try: <dtml-tree branches_expr="objectValues(['Album','Photo'])"> Dieter

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Re: [Zope] input type="checkbox" name not pushed to zsql method namespace
by Dieter Maurer 10 Oct '00

10 Oct '00

Francisco =?ISO-8859-1?Q?Jos=E9?= Esteban =?ISO-8859-1?Q?Risue=F1o?= writes: > this is the standard behaviour in a HTML form. To avoid this problem we > include > an line like this: > > <dtml-if "REQUEST.has_key('CheckBox_name')"> > <dtml-else> > <dtml-call "REQUEST.set('CheckBox_name', 'N')"> > </dtml-if> > > in the method that receives the form data. Alternatively, you may try a default value in your ZSQL argument list, something like: Arguments: ... Checkbox=0 ... Dieter

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Fighting htmllib in external method
by Jason Spisak 10 Oct '00

10 Oct '00

Howdy Zopsters, I want to catalog some html files but I want to strip the html tags out. htmlparser does a good job of that, but when I try to acces that from an external method, I run into trouble. import htmllib import formatter def index(self, html): fmtr = formatter.AbstractFormatter(formatter.DumbWriter(file)) p = htmllib.HTMLParser(fmtr) return p.feed(html) Since the DumbWriter uses stdout, this returns None. When I try to write to a temporary file, or pipe I get 'bad file descriptor' errors because of the way external method function I guess. Any help would really be appreciated. All my best, Jason Spisak 444(a)hiretechs.com

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RE: [Zope] overriding __str__ method?
by Dieter Maurer 10 Oct '00

10 Oct '00

Seb Bacon writes: > I know how to create a form that does what I want (update properties, > whatever). What I don't know is how to include it as part of the rendered > content programmatically. At the moment users have to go to > www.widgets.com/manage_content, log in, and see a set of forms loosely based > on the Zope manage interface. Instead, I'd like them to go to the same url, > and see exactly the same website as someone who's not logged in, except they > have these lovely little "edit this" buttons next to each editable content > element (by which I mean image, text snippet, etc). > > Now I *could* do a > > <dtml-if "AUTHENTICATED_USER.has_role('content manager')"> > <a href="edit_this">edit this</a> > </dtml-if> > > in each content element. But I'd much rather be able to subclass or mixin an > 'editable' class for each content element in question. The question is, > what methods should I be providing to manipulate how the content is > rendered? For example, I can provide a new 'view' method in the 'views' tab > for a ZClass, but this does not get called when an object is rendered as > part of another document. The reason I was going on about __str__ is > because that seems to be the only place that you can interfere with how the > content is rendered inline? > > Hope that's clearer, I now do understand it better. Though, I have to admit that others understand you first problem statement better than I did. DTML renders an object by 1. looking it up 2. calling it, if it is callable 3. stringifying the result by calling "str" Thus, for callable objects, changing the "__str__" will not help. For callable objects, "__call__" would need to be modified. However, I would strongly discourage to make such a drastic change to Zope objects: * a modification of "__call__" would not only affect rendering but also other use of objects (e.g. if DTML methods are used to validation and should return "0" or "1". * the pages could be littered with "edit me" buttons. It is (in general) not easy for your content manager to determine the object boundary which the "edit me" applies to. * we use DTML objects sometimes to factor out common "object"s such as e.g. the option list for HTML <select> tags. Automatically adding "edit me" would produce invalid HTML. I would rather suggest, you develop some method (or product), say "content_render", that can render an object (emulation the normal DTML rendering process) and can add whatever is necessary to facilitate management (e.g. visualizing object boundaries, placing "edit me"). Rather than <dtml-var xxx> you would then use <dtml-var "content_render(xxx,_)"> at places where the result would be usefull and legal (e.g. not inside a "select" tag). Have you looked at the PTK? You will find there some of your idea realized. However in a simplified form: a document contains a single "edit me" integrated to allow the owner to edit his content. Dieter

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ZSQL Method Timings/Profiling or MySQL SQL Execution Timing Statistics
by knight 10 Oct '00

10 Oct '00

Greetings, I have a lot of past experience with tuning and timing on Oracle (quite simple), but I seem to have hit a hurdle with timing my sql statements in MySQL. Getting these timings are _incredibly_ important to finding bottlenecks in a web site's performance... Now, first, is it possible to turn on profiling for ZSQL methods? I've turned on my Zope's profiling, and I can see statistics on how many times sqlvar was called, but not specific zsql methods. Second, anyone familiar with any mysql settings that will dump a log displaying real-time sql executions and the corresponding execute time? I like to turn sql timing on, then run around the site for a while, send some people to test it out, or throw up a http load tester script up, and then check the timing logs to see how things worked out. Regards, Knight knight(a)phunc.com

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Odd SQL errors- HELP
by Jon Franz 10 Oct '00

10 Oct '00

Hello, I have Zope 2.2.2 running with a MySQL database, and everything _was_ working fine until I started to play with the new database structure our dba came up with for tracking our recruiting process... anyway, i have a db named recruit, with a MySQLDA connection object to it that works, but on mnay of the tables I get an error such as the one pasted below when I attempt to do a simple query... Now, the state table does not return this error and has this structure: (as cut-n-pasted from the mysql monitor) +-------+---------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-------+---------+------+-----+---------+-------+ | state | char(2) | | PRI | | | +-------+---------+------+-----+---------+-------+ meanwhile any of our tables with 'id' fields choke with the keyerror: unhandled, heres an example table struct: +-------+--------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +-------+--------------+------+-----+---------+----------------+ | id | mediumint(8) | | PRI | 0 | auto_increment | | value | varchar(32) | | | | | +-------+--------------+------+-----+---------+----------------+ Now, at first i thought it was the field name of 'id' causing the problem, but now I've tried renaming the field and its still a no-go. I can do queries such as 'select value from reason' fine, but if i select * or the id field, it chokes... Looking through the mailinglist archives, I think its a 'mapping error' where the ZmySQLDA doesn't properly map this type of field for some reason... can someone help me solve this problem? Yes, I can change the db, but thats really not an acceptable option, since the dba will then just go 'Well, if zope cant handle a simple db structure without changing field name and/or types, then i refuse to sign off on using zope as a development tool!' >>> Zope Error Zope has encountered an error while publishing this resource. Error Type: KeyError Error Value: unhandled Troubleshooting Suggestions This resource may be trying to reference a nonexistent object or variable unhandled. The URL may be incorrect. The parameters passed to this resource may be incorrect. A resource that this resource relies on may be encountering an error. For more detailed information about the error, please refer to the HTML source for this page. If the error persists please contact the site maintainer. Thank you for your patience. Traceback (innermost last): File /usr/local/zope/2.2.0/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /usr/local/zope/2.2.0/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/zope/2.2.0/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: RoleManager) File /usr/local/zope/2.2.0/lib/python/ZPublisher/Publish.py, line 171, in publish File /usr/local/zope/2.2.0/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: manage_test) File /usr/local/zope/2.2.0/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: manage_test) File /usr/local/zope/2.2.0/lib/python/Shared/DC/ZRDB/Connection.py, line 180, in manage_test (Object: RoleManager) File lib/python/Products/ZMySQLDA/db.py, line 191, in query KeyError: (see above)

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