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| mgedmin | timte: List() is more suitable than Tuple() here, I'd say | 00:09 |
|---|---|---|
| timte | yes, right | 00:09 |
| timte | but should this List() be in the utility class or is that inappropriate? | 00:11 |
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| mgedmin | I don't know | 00:15 |
| mgedmin | what's your application? | 00:15 |
| mgedmin | you can either have a local utility that stores some data persistently, or you can store data in a content object and have a global utility locate and use it | 00:16 |
| timte | I want to show rss feeds. | 00:16 |
| timte | And I thought it I'd store the feeds in a utility. | 00:17 |
| timte | but the feed urls should be editable, so I need a schema | 00:18 |
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| mgedmin | why utility? | 00:19 |
| timte | I thought that would be the right thing to do | 00:20 |
| mgedmin | I think utilities are useful when you have something pluggable, when you have more than one kind of something and need one of those configured explicitly | 00:21 |
| mgedmin | things like SQL database connections | 00:22 |
| timte | I associate zope3 utilities with zope2 tools, they have APIs and store some data that are global for the site. | 00:22 |
| mgedmin | I think what I'm trying to say is that if you have a global utility, you have difficulties storing data persistently | 00:22 |
| timte | oh | 00:22 |
| mgedmin | and if you have a local utility, you have difficulties, period | 00:22 |
| mgedmin | ;) | 00:22 |
| mgedmin | I wouldn't say zope3 is ready for through-the-web dynamic site building | 00:23 |
| mgedmin | it is very good for filesystem-based application building | 00:23 |
| timte | hmm, how do you mean? I don't develop this through the web | 00:24 |
| * mgedmin is not entirely sure what he means himself | 00:25 | |
| mgedmin | if I were going to build an rss reader with zope 3 | 00:26 |
| timte | yes... :) | 00:26 |
| mgedmin | I'd create a content object that stores a list of feeds | 00:26 |
| mgedmin | where each feed has a name/title/url/icon/whatever | 00:26 |
| mgedmin | I'd probably be inclined to make the content object a container that stores objects providing IFeed | 00:27 |
| mgedmin | then I'd write some views | 00:27 |
| mgedmin | some for editing the feed list | 00:27 |
| mgedmin | and one for aggregating the feeds | 00:27 |
| mgedmin | um | 00:27 |
| timte | and when I want all feeds I use a utility that locates this object and returns all its feeds? | 00:28 |
| mgedmin | where do you want these feeds? | 00:28 |
| timte | in the root of my site | 00:29 |
| mgedmin | what comprises your site? | 00:29 |
| mgedmin | folders and page templates stored in the zodb? | 00:29 |
| timte | page templates are on file system of course | 00:30 |
| mgedmin | so your site is a custom application? | 00:30 |
| timte | yes | 00:30 |
| mgedmin | well, then | 00:30 |
| mgedmin | suppose your site provides IMySite | 00:30 |
| mgedmin | you could have an attribute rss_feeds = Attribute("a container of IRssFeed objects") | 00:31 |
| mgedmin | and the index.html view on IMySite would know to use context/rss_feeds | 00:31 |
| mgedmin | or, if you want to be more flexible, you could adapt IMySite to some interface like IRssFeedConfiguration | 00:31 |
| mgedmin | or you could go down the local utility route | 00:32 |
| mgedmin | maybe it won't be painful | 00:32 |
| mgedmin | the z3 developers seem to have stopped redesigning that part | 00:32 |
| timte | :) | 00:32 |
| timte | if I want members to be able to choose feeds, how should their feed form know where to get the "all available feeds" from? | 00:34 |
| mgedmin | getSite().rss_feeds | 00:34 |
| timte | hmm | 00:35 |
| timte | ok, this should probably work | 00:36 |
| timte | what is the problem using global utilities? wouldn't that be similar? | 00:37 |
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| mgedmin | getSite() will work only when you're rendering a request that traversed inside | 00:45 |
| mgedmin | it's ok to assume that in a view registered for an interface specific to your app | 00:46 |
| mgedmin | it is somewhat less ok to assume that in a global utility that could be called from any context | 00:46 |
| mgedmin | otoh you can make the utility perform an interface check and fall back to some default, an empty list perhaps | 00:46 |
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| mgedmin | disclaimer: it is kind of the middle of the night, and I'm not sure I am able to think clearly enough to design applications I know little about | 00:47 |
| mgedmin | ;) | 00:47 |
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| smokeyd | hey all. How can I pass data to a zpt page from the page class (the class declared in configure.zcml in a browser:page directive). I tried setting an extra attribute in self.context (self.context.data=somehing) but I get a ForbinnenAttribute error. Is there another way to pass data to the tempate, or to set data in the context? Or is the only official way is to do it in the actual object of the context | 01:35 |
| smokeyd | I hope this is still understandable :) | 01:36 |
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| philiKON | MJ, ayt? | 18:24 |
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