September 1999 - Zope

RE: [Zope] multimedia zclasses?
by Brian Lloyd 13 Sep '99

13 Sep '99

> Hello all, > > I was showing off Zope the other day to a workmate (he's a > graphic artist type) > and he said "hey that's cool" (yeah, zclasses and zcatalog > are cool :-)) then he > asked: I wonder if zope can handle stuff like serving mp3 and > streaming media > like real-audio, flash...? > > Err...yeah, that'd be cool too, I guess. But is that > possible? How difficult > would such a beast (or beasts) be? Thoughts? Ideas? > > (Now I just _know_ someone's going to announce - in a couple > of hours - a > realmedia zclass v0.0.1, right? ;-)) We have been doing some thinking about the low-level ZServer architecture lately with an eye toward making large downloads less resource-intensive. The Zope and ZServer underpinnings were designed in such a way that they did not *prevent* us from implementing low-impact streaming - but the actual support for it is not there yet. Hopefully this won't expose my ignorance about streaming media (oops, I just did it, didn't I?), but isn't the effectiveness of streaming mostly a question of connection quality between the client and server? In my understanding, if a client were to request a big mp3, it would get loaded into memory as an object (with a non-trivial footprint). Zope would then start pushing the data back down the pipe to the client. The "streaming media" client would basically cache a certain amount of the incoming data and try to play and keep the buffer filled. If this is the case, the only problem (from Zope's point of view) is that large objects have to get loaded into memory, which would be a problem for sites that made heavy use of such things. The architecure thinking that we are doing will eventually solve that problem. In the interim, unless you are doing something really out there (like dynamically generating mp3s) you could probably save a lot of time and worry by just making the big mondo files available from a normal web server and linking to them. Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

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RE: [Zope] Help: searching a Zope site.
by Michel Pelletier 13 Sep '99

13 Sep '99

> -----Original Message----- > From: Gilles lavaux [mailto:gilles.lavaux@esrin.esa.it] > Sent: Monday, September 13, 1999 12:44 PM > To: Zope(a)zope.org > Subject: [Zope] Help: searching a Zope site. > > > Hello > > I try to implement a find with Zope 1.10.3. ( I know, it's old.) > > If I use the manage_findResult method I get the result > inside a 'manage' > like form. I don't want this: I want to be able to format the output. > > I have readed the FAQ about the PrincipiaFind stuff, and I am > not able to > get it to works. > Can someone send me DTML/external_method example? > > Thanks in advance. I only tested this with 2.0.0, I don't know about 1.10.3. <dtml-var standard_html_header> This will list all object ids in the current folder<br> <dtml-in "ZopeFind(this())"> <dtml-var "_['sequence-item'][0]"> </dtml-in> </dtml-var standard_html_footer> ZopeFind accepts the following parameters: def ZopeFind(self, obj, obj_ids=None, obj_metatypes=None, obj_searchterm=None, obj_expr=None, obj_mtime=None, obj_mspec=None, obj_permission=None, obj_roles=None, search_sub=0, REQUEST=None, result=None, pre=''): obj is the object to start looking from (in our example, this()) and is the only required argument The next 8 arguments are find terms, for example, if an object has an id you specify with 'obj_ids', it will be returned. search_sub means recursivly descend into sub folders. REQUEST is, as allways, the request object. result and pre are used by the recursion machinery and should not be diddled with. ZopeFind returns a list of two item tuples. The first item is the object's id, the second is it path *relative to the 'obj' argument*. Now that I explained all that, _someone_ can volunteer to write a How-To. -Michel > > > > Gilles Lavaux > SERCO ESA-ESRIN > > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://www.zope.org/mailman/listinfo/zope > > (To receive general Zope announcements, see: > http://www.zope.org/mailman/listinfo/zope-announce > > For developer-specific issues, zope-dev(a)zope.org - > http://www.zope.org/mailman/listinfo/zope-dev ) >

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Python Methods?
by Michel Pelletier 13 Sep '99

13 Sep '99

Ok, I'm a bit lost on the PythonMethods, intensly cool though they sound. I pasted the example comic strip code into a method, but when I click Try It I get: Invalid request The parameter, urllib, was omitted from the request. Make sure to specify all required parameters, and try the request again. Ok so it didn't make much sense to me why a module is a parameter in the example, but I tried it anyway. This is the latest and greated PythonMethods. -Michel

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bug ? zsql methods in zclasses.
by chas 13 Sep '99

13 Sep '99

>From the Zclass tutorial : "For the most part your methods will consist of DTML Method objects, SQL Method objects and External Method objects." Sure enough, I can add ZSQL methods to a Zclass, but the ZSQL method is then inaccessible from other methods in the class :( eg. creating a search interface in this Zclass fails to list the ZSQL method in the list of "searchable objects" eg. even creating a DTML method and manually sequencing over the ZSQL method output fails. eg. the ZSQL method can not be accessed directly via URL for any of the instances of this Zclass - instead it pops up the "Authentication Error. Please log in" dialog box. Surely there is something wrong with Zope here ? chas

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RE: [Zope] Zope Permissions
by Michel Pelletier 13 Sep '99

13 Sep '99

> -----Original Message----- > From: Katrin [mailto:katrin@beehive.de] > Sent: Monday, September 13, 1999 11:34 AM > To: zope(a)zope.org > Subject: [Zope] Zope Permissions > > > hi everybody! > > i have a little problem with permission settings. > > i'm writing a product in python. the product installs dtml > methods when > installed in a folder. now i want zope to ask for the user > name and the > password when a certain page is rendered as an URL (zope > doesn't have a > user name yet). > > i found out that in order to get the zope login window, i have to > uncheck the view permission of the page (i mean the checkbox > for acquire > permission settings). how can i uncheck the box using python in my > product? or how can i delete the view permission for this page in my > product? > > i hope someone's able to help me here. I'm not sure exactly what your asking, but it might be useful to simply force the browser to authenticate: <dtml-var standard_html_header> <dtml-if "AUTHENTICATED_USER.getUserName() == 'Anonymous User'"> <dtml-raise Unauthorized> Wrong username or password </dtml-raise> </dtml-if> Hi <dtml-var "AUTHENTICATED_USER.getUserName()"> <dtml-var standard_html_footer> or something like that. -Michel

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Zope and Sambar ?
by Marc Gehling 13 Sep '99

13 Sep '99

Can I use Zope with Sambar-Server ? and I search a Readme or How-To for this...:-) m.gehling

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RE: [Zope] FTP Support for PythonMethods
by Michel Pelletier 13 Sep '99

13 Sep '99

> -----Original Message----- > From: Evan Simpson [mailto:evan@4-am.com] > Sent: Monday, September 13, 1999 12:44 PM > To: Michel Pelletier > Cc: zope(a)zope.org > Subject: Re: [Zope] FTP Support for PythonMethods > > > Michel Pelletier wrote: > > > > > This has the added bonus of enabling HTTP PUTs and WebDAV. > > Hey, thanks! Mind if I incorporate this? Of course, why else would I have posted it? Note that I have not tested it. I haven't even tried it. -Michel > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://www.zope.org/mailman/listinfo/zope > > (To receive general Zope announcements, see: > http://www.zope.org/mailman/listinfo/zope-announce > > For developer-specific issues, zope-dev(a)zope.org - > http://www.zope.org/mailman/listinfo/zope-dev ) >

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Help: searching a Zope site.
by Gilles lavaux 13 Sep '99

13 Sep '99

Hello I try to implement a find with Zope 1.10.3. ( I know, it's old.) If I use the manage_findResult method I get the result inside a 'manage' like form. I don't want this: I want to be able to format the output. I have readed the FAQ about the PrincipiaFind stuff, and I am not able to get it to works. Can someone send me DTML/external_method example? Thanks in advance. Gilles Lavaux SERCO ESA-ESRIN

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FTP Support for PythonMethods
by Michel Pelletier 13 Sep '99

13 Sep '99

> -----Original Message----- > From: chas [mailto:panda@skinnyhippo.com] > Sent: Sunday, September 12, 1999 3:27 PM > To: zope(a)zope.org > Subject: [Zope] pythonmethods rock ! this should be part of zope. > > > So, I'm using FTP (with Ultraedit on win32) which works great with > dtml methods and dtml documents stored in folders but I can't open > the following : > a) pythonmethods, no matter where they are stored. why is this so ? I have not tested this, but changing PythonMethods to support FTP should be as trivial as adding the following methods to the PythonMethod class: def PUT(self, REQUEST, RESPONSE): """ Handle HTTP PUT requests """ self.dav__init(REQUEST, RESPONSE) body=REQUEST.get('BODY', '') self._validateProxy(REQUEST) self._body = rstrip(body) self.makeFunction(1) RESPONSE.setStatus(204) return RESPONSE def manage_FTPget(self): "Get source for FTP download" return self._body This has the added bonus of enabling HTTP PUTs and WebDAV. -Michel

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Publishing via FTP on Zope 2.00
by André LAGADEC 13 Sep '99

13 Sep '99

Hi all, I try to use ZOPE 2.00 for publishing intranet with Red Hat Linux 6.0 I want to get documents from another site Web to Zope Database. I use AbsoluteFtp to open two sessions FTP and to drag and drop documents from one hand to another. When I use two site FTP on port 21, it works. But with the remote FTP site and the Ftp server (on port 21 or on port 8021) include in Zope it doesn't work. The transfert start but no data are received. Can anyone can help me ? Can you say me how does FTP Zope work ? On what port is listen and send or receive data ? Where can I get specification ? Please can you respond me on the list and to my mail. Thanks.

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