- Zope - Zope lists

add a File type via a form
by Mihamina Rakotomandimby 18 Dec '06

18 Dec '06

Hi, I have a very simple "index_html". It s a form in which I ask for an "Id" <form action="addFile" method="post"> <div>Id</div> <input type="text" name="id" size="40" /> <input type="submit" name="submit" value="Add File" /> </form> what I want is when the visitor fill the form and then submit it, a "File" object is created inside the same container. I added a Python script named "addFile" in the same container, and tried some things... but always failed. How to create a "File" then? Thank you. PS: I know the danger if an anonymous can do such things as creating an object into a container, but it's just for learnig prupose at the moment.

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Zope, setlocale(), requests and traversal
by Doyon, Jean-Francois 18 Dec '06

18 Dec '06

Hello, I know there is a locale setting in etc/zope.conf, and I make use of it. The problem now, is that I have a multilingual site that I would like to have support multiple locales, per request: One request could be for the french site and content, using the fr_CA locale in my case, but another could be for english, and en_CA ... Localization is done through a traversal hook. So right now I call setlocale() on a per request basis, and it works fine in development. So I'm wondering: - I see the docs mention setlocale might not be threadsafe, since Zope is threaded, anyone know the implications? - If I call setlocale() during traversal, could that setting affect other threads/requests? - If the above 2 are indeed problems, is there some nice way to do set per-request locales, short of completely implementing a custom way of doing it? Thanks! Jean-François Doyon Internet Service Development and Systems Support / Spécialiste de dèveloppements internet et soutien technique Canada Centre for Remote Sensing/Centre Canadien de télédétection Natural Resources Canada/Ressources Naturelles Canada http://atlas.gc.ca Tel./Tél.: (613) 992-4902 Fax: (613) 947-2410

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Building a Zope based site
by John Poltorak 18 Dec '06

18 Dec '06

How much do people charge for building a Zope based site? I've given up on trying to understand Zope myself as it's just too difficult, but suspect it can provide more functionality than other CMS systems. -- John

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Questions about demostorage
by Duncan Booth 18 Dec '06

18 Dec '06

Can someone explain to me what is and is not safe to do with demostorage? Say I have a zope setup involving a zeo server and clients, and I create another zope instance with <demostorage> wrapped around both <zeoclient> mounts (the catalogs are mounted separately from the rest of the content). The main zope setup remains active while I'm using the demostorage setup, so content will be added/edited or deleted in the zeo zodb. A bit of experimenting seems to indicate if I edit an object in the main system, the demostorage version picks up the changes until such time as I edit the same object in the demostorage instance. (So in other words, the connection from the demostorage front-end to the zeo-client isn't frozen at the point when the storage is opened which might have been a plausible alternative). What I'm a little worried about is the catalog. I'd guess that there is no guarantee that the demostorage instance gets a catalog which is consistent with the rest of the data (so I could easily get site errors in the demostorage instance), but there should be no danger that any changes I make can affect the live site and restarting the demo instance would get it back into a consistent state, at least for a while. Is that a reasonable interpretation? What I'm hoping to achieve is a way of testing upgrades on our live system in an environment as close as possible to the real live environment, but without actually affecting the live system in any way. Demostorage seems to offer that as an option.

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[Warning] Danger from Zope caching, especially the CMF Caching Policy Manager
by Dieter Maurer 17 Dec '06

17 Dec '06

Crosspost: 'Reply-To' set to 'zope-cmf'. We nearly escaped a catastrophy: a page with sensitive personal information ended in a shared cache and was delivered to arbitrary people. This happened despite the fact that the template generating the page contained a "response.setHeader('Cache-Control', 'no-cache')" (and related headers for non HTTP/1.1 clients). The analysis quickly revealed broken design in the CMF Caching Policy Manager (CPM) as the cause: * it has applied its general policy depite the fact that the template itself has provided more adequate decisions with respect to caching * the caching policy manager action affects the complete response. Therefore, only the top level object, the object that controls the response content, should influence the CPM decisions. In the concrete case, the primary template did not trigger the CPM but the call of a secondary template responsible only for a tiny part of the response. The same problem also affects Zope's HTMLCacheManager. The description indicates in what direction the CPM should get fixed: * If the response already provides cache control, the CPM should not override it, as it is likely that the specific information available to the response generating process is more trustworthy then the general CPM policies. This is arguable, especially as it changes the current behaviour. Maybe, it should be controlled by an additional configuration option. * The CPM (and Zope's HTTP Cache Manager) must set cache headers only based on the object that generated the (complete) response entity and not based on other objects called during the request (and probably only responsible for part of the entity). -- Dieter

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Login track
by stefan83 17 Dec '06

17 Dec '06

Hello, I have my own information system on Zope. I would like to enable users to login and do acts, what they can do (according to security settings). But I cannot track already logged users. I redirect them into login page, when they want to login. After passing the credentials, they are succesfuly logged. But if they click on the other site on my system, it shows me, that there is not logged user, but Anonymous user. Please, could you help me how to retain information who is currently logged until his logout? I would be very glad, thank you. Domco

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Preserving Context
by Javier Subervi 17 Dec '06

17 Dec '06

Hi; I have a page template which I use to catch and customize 404 errors. In that page, I call a script that offers site navigation. Since I have several sites within a portal, I decided to move all common elements (such as this page) to a central "root" location from which all sites could draw. However, when I did that, this page returned the navigation of that "root" dir! That's not what I want, of course. How do I preserve context for the called script, such that when the page is called, it passes the context from where it was called to the script in question? TIA, Javier ____________________________________________________________________________________ Want to start your own business? Learn how on Yahoo! Small Business. http://smallbusiness.yahoo.com/r-index

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FISL 8.0 call for papers
by Ricardo L. A. Banffy 15 Dec '06

15 Dec '06

Hi folks. I know it's 50% off-topic, but I tought this list could attract some nice presentations. http://digg.com/software/8th_International_Free_Software_Forum_Call_For_Pap… "One of the largest Free Software event in the world, the 8th edition of the International Free Software Forum called for papers. Proposals due on December 31st 2006."

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special characters in XML
by Daniel de la Cuesta 15 Dec '06

15 Dec '06

Hello, I am using a page template to geneate a valid XML document, this is the template: <?xml version="1.0" encoding="UTF-8"?> <person xmlns:tal="http://xml.zope.org/namespaces/tal"> <name tal:content="string:&hello"> Mi mobile </name> </person> The caracter "&" gives me the following error: Compilation failed xml.parsers.expat.ExpatError: not well-formed (invalid token): line 3, column 38 If I remove the "&" everything goes ok. What can I do?? Thank you

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acquisition
by Dennis Schulz 14 Dec '06

14 Dec '06

Hi I want to acquire an persistent zope object (supplier) that is inside my productfolder myproductfolder/supplier How to get a reference to this object? Also, Is there a method to get the product root? I would like to have that all instances of my class can be traversed like prinstance/suppliers The class has to be derived from SimpleItem. What do I have to add to get it work? class PurchaseRequisition( SimpleItem, Implicit ): suppliers = aq_inner(self).aq_acquire(reference_to_container) Dennis

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