- Zope - Zope lists

RESPONSE.write() slow
by Philipp Auersperg 13 Aug '00

13 Aug '00

I want to be able to download dynamic content (coming from a relational database) via Zope as a file. I do this by calling RESPONSE.write() which works fine but it is very slow When I download a greater package with an External method (on the bottom of the mail), I just get downloads of 3 to 12 KB/s in my LAN and even locally on the same machine. Also the thread sending the data uses >90% CPU. Can anybody tell me why it is so slow or how I can speed that up? I am using a standalone Zope 2.2.0 with standard ZServer Thanks in advance Philipp Auersperg ---------------------------- def streamTest(self,RESPONSE): RESPONSE.setHeader('Content-Type','text/richtext') i=0 while i< 100000: RESPONSE.write('hallo') i=i+1 RESPONSE.close()

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Zope Newsletter?
by Luis Cortes 12 Aug '00

12 Aug '00

Hi! Does anyone of a simple newsletter product. What I mean by simple is no extra features, just the news. Thanks ahead of time for any help, Luis.

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Broken product instances when using SiteAccess
by Helge Tesdal 12 Aug '00

12 Aug '00

We have set up a site using SiteAccess. The site itself works just fine, but when moving Data.fs to other machines the instances of our products appear broken. There is no problem adding new instances. Currently we're running Zope 2.1.6, and will probably continue to do so unless this is fixed... We have copied the whole zope directory from our main site, including all installed Products, Extensions and so on. Could it be that Zope is looking for the product in the wrong places? We had SiteAccess running when the instances were added, and but have to turn it off when used on other machines. The rewriterule is included below. Any suggestions on how to make this work again? Is it possible to get some more debug info from Zope on where the instance wants the product to reside? Our rewriterule: ========================================== <dtml-call expr="REQUEST.setURL(base='http://toplevel.domain')"> <dtml-let path="REQUEST.path"> <dtml-if path> <dtml-comment> There is a path </dtml-comment> <dtml-if expr="path[-1]=='Z'"> <dtml-comment> '/Z/...' explicitly forbids redirection to 'artists' </dtml-comment> <dtml-call expr="path.pop()"> <dtml-call expr="REQUEST.setURL(path='Z')"> <dtml-elif expr="path[-1] in objectIds()"> <dtml-comment> Don't redirect existing objects </dtml-comment> <dtml-else> <dtml-comment> Everything else goes to 'artists' </dtml-comment> <dtml-call expr="path.append('artists')"> <dtml-call expr="REQUEST.set('SiteRootPATH', '/')"> </dtml-if> </dtml-if> </dtml-let> ============================================== Thanks in advance -- Helge Tesdal tesdal(a)v160b.studby.ntnu.no

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Make a Python Products Add list show only certain meta types?
by Kevin Howe 12 Aug '00

12 Aug '00

I have a custom Python class (Container) which uses Folder as it's base class. I also have a custom Python class (AnObject). I want it so that when you view a Container object, "AnObject" will be the only meta_type available to be added in the Add List. The problem is that since Container inherits from Folder, the Add List makes all object types available to be added. Is there any way to tell a class to show only certain meta_types? Kevin

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Fw: [Zope] Can't get ZClient to work, zope 2.2.0
by Loren Stafford 12 Aug '00

12 Aug '00

> From: "Bill Welch" <bill(a)carbonecho.com> > > > > hit http://zope.carbonecho.com/forum/sepServe to see the error > > ('expecting read-only buffer...') > > > > This is a known bug. You need to install this patch to Client.py: > > #h.connect((self.host, self.port)) > h.connect(self.host, self.port) > > Restart Zope after installing. > > See http://classic.zope.org:8080/Collector/1480/view > > -- Loren > > >

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Can't get ZClient to work, zope 2.2.0
by Bill Welch 12 Aug '00

12 Aug '00

hit http://zope.carbonecho.com/forum/sepServe to see the error ('expecting read-only buffer...') here's the external function: from ZPublisher import Client def ServePHP(url='http://www.yahoo.com', username='bill', password='xyz'): print 'Sep Serving ' + str(url) return Client.call(url, username, password) [1]

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Xron Product Screenshots [was: Importable Xron]
by Loren Stafford 11 Aug '00

11 Aug '00

> I have in a recent email to the mailing list urged all Product creators to > include screenshots and/or demos of their products. > I'd like to put some screenshots the management pages in the README.txt of Xron where they would illustrate that text that explains those pages. Can you point to any examples of other products that do this effectively. Authors often (well I do anyway) use the same README.txt for the README tab of Control Panel / Products and for the "Release Information" link on the www.zope.org/Members product page. Being able to use the same file makes documentation easier for developers, and that's important; if documentation is needlessly hard, it won't get done. However, if I create image hyperlinks that work on http://www.zope.org/Members/lstaffor/Xron/README.txt , they won't work in the context of Control Panel / Products. I don't see to make links work correctly in both places. Does anyone know how? -- Loren

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RE: [Zope] Using Zope as App Server for non http-Protocols
by Chris McDonough 11 Aug '00

11 Aug '00

Phillipp, First, design your system. Then write the very basics of what you need in Python first using whatever third-party binaries you need to, leaving the methods which use Zopish features (like ZSQL methods, ODB, etc) as stubs. Then after you're done, and it works, you can wrap it in a Zope Product. There's not much information on how to do this, I'm working on material for a Product Developer's Guide now. Authentication should probably be handled outside Zope in your Python code. Unless it's not. :-) -----Original Message----- From: Philipp Auersperg [mailto:zope@philosoft.at] Sent: Friday, August 11, 2000 5:31 PM To: zope(a)zope.org Subject: [Zope] Using Zope as App Server for non http-Protocols We want to (mis)use zope as an application server servicing a proprietary non-http protocol for transmitting compressed data. Our idea is a specially written client that connects on a proprietary port to zope where a special product is listening and serving the request. Our question: How can I implement a product listening on a specific port and servicing requests and sending back binary (in our case compressed) data. But the product should of course be able to use the infrastructure of Zope (ODB,External methods,ZSQL methods...) Another question is how does the authentification work for such a non-http connection. Any hints? Thanks in advance Philipp Auersperg

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retrieving data from REQUEST.form
by jesse 11 Aug '00

11 Aug '00

I am creating a program, yet again. How this works is, a zope factory calls a form, which submits data from a <textarea> to a DTML document. I want this DTML document to take the data from the form and display it on multiple lines. For instance: If a person fills out the textarea like so: First line second line third line I want the DTML document to print out: First line second line third line The only problem is, when the <textarea> submits to the document, (lets say the textarea is called list), it submits it as a dictionary. That means all the data is on a SINGLE STRING. So the data from the form looks like this. <dtml-var "REQUEST.form"> = {'list': 'first line/015/012second line/015/012third line'} the /015/012 represent the line breaks. Seeing this, i used the replace function in zope, trying to replace the line breaks with <br>, which would be accepted by html. however, whenever you try and access the information in the form as a string... <dtml-var "REQUEST.form['list']"> it comes out with line one line two line three All the line breaks dissapear! So there is nothing to replace! Does anyone have any ideas how I could solve this problem?

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<dtml-with> namespace conflict question needs explanation
by Jason CUNLIFFE <jasonic＠nomadicsltd.com> 11 Aug '00

11 Aug '00

Hello Please can someone help us understand how to avoid DTML method names conflicting with other zope objects with same name. For example using Zope export/import during recent site development to transfer work from local machines to the linux server broke sections of our site in a manner which was very hard to find. The reason we have finally traced to namespace conflict. We imported code which included calls to a local zope object named 'swf' for simple substitution. But suddenly our code did not work. It turned out that another object identically named 'swf' was an already existing 'folder' ..!! This is a very disturbing discovery, becuase it implies that one might have anywhere at anytime hidden or visible namespace conflicts emerging and vanishing with no control. We had thought that <dtml-with something></dtml-with> would avoid this. But it does not and may even cause it! It also implies that makes development of Zope sites across various machines very hit-or-miss Please help.. Exact code dump follows... 1. I have an original DTML template called 'objembedswf' in a folder named 'Flash4' <OBJECT ID='login' CLASSID='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' CODEBASE='http://active.macromedia.com/flash2/cabs/swflash.cab#version=3,0,0 ,0' WIDTH=<dtml-var width> HEIGHT=<dtml-var height>> <PARAM NAME='Movie' VALUE='<dtml-var swf>'> <PARAM NAME='Play' VALUE='false'> <PARAM NAME='Quality' VALUE='best'> <PARAM NAME='swLiveConnect' VALUE='true'> <PARAM NAME='menu' VALUE='false'> <EMBED NAME='login' mayscript='mayscript' SRC='<dtml-var swf>' swLiveConnect='true' WIDTH='100%' HEIGHT='100%' salign='t' quality='best' play='false' menu='false' TYPE='application/x-shockwave-flash' pluginspage='http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_ Version=ShockwaveFlash'> </EMBED> </OBJECT> 2. Below this my DTML file includes calls to this template like this: <dtml-with Flash4> <dtml-call "REQUEST.set('swf','login.swf')"> <dtml-call "REQUEST.set('width','100%')"> <dtml-call "REQUEST.set('height','100%')"> <dtml-var objembedswf> </dtml-with> 3. Here is the result of substitution returned in browser <OBJECT ID='login' CLASSID='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' CODEBASE='http://active.macromedia.com/flash2/cabs/swflash.cab#version=3,0,0 ,0' WIDTH=100% HEIGHT=100%> <PARAM NAME='Movie' VALUE='<Folder instance at 8557b00>'> <PARAM NAME='Play' VALUE='false'> <PARAM NAME='Quality' VALUE='best'> <PARAM NAME='swLiveConnect' VALUE='true'> <PARAM NAME='menu' VALUE='false'> <EMBED NAME='login' mayscript='mayscript' SRC='<Folder instance at 8557b00>' swLiveConnect='true' WIDTH='100%' HEIGHT='100%' salign='t' quality='best' play='false' menu='false' TYPE='application/x-shockwave-flash' pluginspage='http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_ Version=ShockwaveFlash'> </EMBED> </OBJECT> I draw you attention to the fact that <dtml-var swf> was supposed to be subsituted with 'login.swf', but instead became <Folder instance at 8557b00> ..ouch.. 4. The reason appears to be that there is a namespace conflict elsewhere in my Zope tree. As it turns out, we have a folder right under / called 'swf'. In fact it could be many places and still cause a conflict. This 'bug/feature' is the same under Zope 2.1.6, and Zope 2.2.0 in Win98se and LinuxRedhat. Is it something about <dtml-with> or perhaps our use of <dtml-call "REQUEST.set> which creates this unpredictable and confusing effect? Is this is a bug? As it stands it means is is very hard to have people working on separate sections of a Zope site because at any time they might be causing namespace collisions like this. In our case the effect was obvious - our swf files immedaitely woudl not display. But other voodoo could easily occur which migh not appear for some time. It provokes me to ask simply what is the search path priority of object acquistion in zope and how do you control it safely? Thank you - Jason Cunliffe

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