Re: [tw] Re: Fields - what are they?
As for now, my question would be - how the fields are represented in
the object model?
There are two types of Tiddler attributes, standard and custom fields:
http://trac.tiddlywiki.org/browser/Trunk/core/js/TiddlerFields.js?rev=11290#L46
http://tiddlywiki.org/wiki/Dev:Custom_Fields
Custom fields are represented as members of the fields object, e.g.:
{
title: Foo,
modifier: FND,
...
tags: [bar, baz],
text: lorem ipsum dolor sit amet,
fields: {
alpha: hello,
bravo: world
}
}
You might want to inspect a Tiddler instance using Firebug:
var tiddler = store.getTiddler(MyTiddler);
console.dir(tiddler);
Please note that such technical details are better discussed on the dev
group, as you're more likely to get competent help there:
http://groups.google.com/group/TiddlyWikiDev/
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[tw] Re: Fields - what are they?
Eric, thanks for the plugin, it will be quite useful. @PMario part of the TW meta data model Terms) Is it described somewhere? So, all the fields (including extended ones) are represented as element attributes? If you click the button references the list is dynamically created. Really? This seems strage.. (seems that such a mechanism would be slow compared to creating an object which is changed after each change of tiddlers, isn't it?) plain/vanilla More terms? I don't know, how much JavaScript you know. I studied it by myself and many things are simple after C++ and shell script; but I did so little practice that this would take me some time to understand things and get able to write what I want. This is very kind of you to list some plugins with increasing level of complicity. As for now I mostly describe TW's possibilities and pointing what I want aside the core ones (and they tend to be aggregation [*] tools). But when I concentrate on the development possibilities, this will be very useful (as this also connects with some desires). As for now, my question would be - how the fields are represented in the object model? Are they just properties of tiddler objects with respective names (say, modifier property for modifier field) or there's more complicated structure? [1] http://visualtw.ouvaton.org/VisualTW.html#FieldsEditorPlugin Wow, the repository looks particularly useful! Thanks once again. [*] https://groups.google.com/group/tiddlywiki/browse_thread/thread/3298c096d1e89eeb/bc173dfb903230d4 On 18 ноя, 23:09, PMario pmari...@gmail.com wrote: There is a FieldsEditorPlugin [1], which may be of interest. Guessing, one of you next questions would be, who to tweak them :) [1]http://visualtw.ouvaton.org/VisualTW.html#FieldsEditorPlugin -m -- You received this message because you are subscribed to the Google Groups TiddlyWiki group. To post to this group, send email to tiddlyw...@googlegroups.com. To unsubscribe from this group, send email to tiddlywiki+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/tiddlywiki?hl=en.
[tw] Re: Fields - what are they?
2.1. The first one is about set algebra. We can make a filter that sets a set of tiddlers with tag1 or tag2: list filter [tag[transcluded]] [tag[examples]] (in TW v2.6.1) but is there a syntax for defining an intersection of sets (tiddler with tag1 and tag2)? For full Boolean logic (and/or/not plus parens as needed), you can use: http://www.TiddlyTools.com/#MatchTagsPlugin It extends the core's syntax so that instead of using a single tag value: [tag[tagvalue]] you can use a Boolean tag 'expression': [tag[tag1 OR tag2 OR (tag3 AND NOT tag4)]] The plugin also provides a public API: store.getMatchingTiddlers(expr,sort,tids) where: expr is a text string containing the boolean tag expression sort is a tiddler fieldname to sort by (default=title) tids is an array of tiddlers to search (default=search ALL) note: both sort and tids are OPTIONAL arguments. Most of the time, these are omitted, and you can simply write: var result=store.getMatchingTiddlers(expr) as in: var result=store.getMatchingTiddlers(tag1 or tag2 and not tag3) enjoy, -e Eric Shulman TiddlyTools / ELS Design Studios -- You received this message because you are subscribed to the Google Groups TiddlyWiki group. To post to this group, send email to tiddlyw...@googlegroups.com. To unsubscribe from this group, send email to tiddlywiki+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/tiddlywiki?hl=en.
[tw] Re: Fields - what are they?
Hi Yakov, You are busy tweaking :) On Nov 18, 5:55 pm, Yakov yakov.litvin.publi...@gmail.com wrote: 1.1 Are they a part of the object model of TW only? Or they must have some DOM representation? It is part of the TW meta data model. You can open a vanilla tw at http://tiddlywiki.com and __view the source__. Then search for div title= and you will see a tiddler source. There are some fields: modified, modifier ... These are standard tw fields. Programmers are able to create so called custom fields which look exactly like the standard fields. 1.2 Is there a field generated for references? If not, why? Is it a part of another table in the relational database? If you click the button references the list is dynamically created. There is no database model involved, in plain/vanilla tiddlywiki. There is a database for TiddlyWeb/TiddlySpace. But it is used as a storage only. You have no direct access to this database. TiddlyWiki client side is allways the same. 1.3 Is it true that TW has core mechanisms (simple API) for search based on fields? if you look at list macro it is simple list filter [tag[myTag]] [sort[modified]] Some answers can be found in [1], but I'm looking for the concepts, more general answers than yes and no. Also, I have some questions about Filters that were extended in TW 2.6.2 [2]. As described above. list filter [tag[myTag]] was possible because there was core code for it. but eg: list filter [tag[myTag]] [template[myListTemplate]] wasn't very easy to create. The new extension to the core, makes it much easier now, _for developers_ to add functions like the [template[]] which may be used to have custom list output formats. 2.1. The first one is about set algebra. We can make a filter that sets a set of tiddlers with tag1 or tag2: list filter [tag[transcluded]] [tag[examples]] (in TW v2.6.1) but is there a syntax for defining an intersection of sets (tiddler with tag1 and tag2)? see Erics post. 2.2. Do the filters implement regular expressions search? If so, what syntax do the use? The core doesn't. I made some plugins, that implement regular expression filtering. I don't know, how much JavaScript you know. But you can have a look at my Plugin sources at [1] Start with: NoCaseListPlugin .. its the easiest. NumberedTextListPlugin .. next XCaseListPlugin .. many possibilities but more complicated. all these plugins extend the core list macro. instead of list filter you can use list numberedText -title so filter is replaced by numberedText + parameters. === Since at the time I wrote the macros, I didn't fully understand how to extend the [tag[]] core mechanism, and I didn't want to totally hijack the list macro, I created my own parameter syntax, which is different to the core. Now I am thinking about to rewrite these macros and use the new core extension mechanism. eg: list filter [regExp[]] would be much easyer now. === If you need information, how the core builds its functions use Erics insideTW [2], which helped me a lot. You wrote: Some answers can be found in (http://tiddlywiki.org/wiki/Tiddler_Fields), but I'm looking for the concepts, more general answers than yes and no. All of the above is heavily dev related. So depending on your scripting skills it may be sometimes frustrating to get the overview. Be carefull :) If this information was too specific tell me, and I'll move back one step. -mario [1] http://apm-plugins.tiddlyspot.com/#XCaseListPlugin%20NumberedTextListPlugin%20NoCaseListPlugin [2] http://www.tiddlytools.com/insideTW/ -- You received this message because you are subscribed to the Google Groups TiddlyWiki group. To post to this group, send email to tiddlyw...@googlegroups.com. To unsubscribe from this group, send email to tiddlywiki+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/tiddlywiki?hl=en.
[tw] Re: Fields - what are they?
There is a FieldsEditorPlugin [1], which may be of interest. Guessing, one of you next questions would be, who to tweak them :) [1] http://visualtw.ouvaton.org/VisualTW.html#FieldsEditorPlugin -m -- You received this message because you are subscribed to the Google Groups TiddlyWiki group. To post to this group, send email to tiddlyw...@googlegroups.com. To unsubscribe from this group, send email to tiddlywiki+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/tiddlywiki?hl=en.
