On Thursday, November 28, 2013 8:02:18 AM UTC-8, Jeremy Ruston wrote: > > The next and previous filters that David wrote are now in the core, and so > are available to use. > They work in association with the 'list' field, which is interpreted as a > space-separated list of tiddler titles (using double square brackets to > quote titles that contain a space). The next and previous filters both work > in a similar way that's easiest to show with an example. >
There are some error use cases I wonder about: Let's say you have a tiddler called "Lesson1" with the "list" field set to: > [[First Bit]] SecondBit FinalBit > You'll also need to create the named tiddlers. > What happens if a tiddler named in the list does not exist? > Then, create a new tiddler called "Navigation" with the tag > "$:/tags/ViewTemplate" and the following content: > Next: <$list filter="[is[current]next[Lesson1]]"/> / Previous: <$list > filter="[is[current]previous[Lesson1]]"/> > What does the filter produce if the "Lesson1" tiddler is missing or the list field is empty? Now if you open a tiddler like "SecondBit" you should see at the bottom the > controls to move to the next and previous tiddlers. > The next and previous filter operators work by locating the currently > selected tiddler(s) in the named list, and returning the adjacent next or > previous tiddler from the list. > What if the same tiddler title in the named list more than once... which occurence does the filter match as the "current selected tiddler"? What does the [[Navigation]] template display if the current tiddler is not in the list at all? When you reach the start/end of the list, does it loop around to the end/start, or just stop? If navigation doesn't loop, when you reach the start/end, can display of non-functional links be suppressed? Will there also be a [first[Lesson1]] and [last[Lesson1]] so a complete "FPNL" (First/Previous/Next/Last) navigation bar can be displayed? enjoy, -e -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to tiddlywiki+unsubscr...@googlegroups.com. To post to this group, send email to tiddlywiki@googlegroups.com. Visit this group at http://groups.google.com/group/tiddlywiki. For more options, visit https://groups.google.com/groups/opt_out.
