The last example does that, it falls back to an entirely different URL if no ISBN fields exist.
On Sunday, January 3, 2021 at 3:59:03 PM UTC+1 [email protected] wrote: > This looks nice! It appears to put all the right code in the right place. > Now if only librarything servers would quit dying on me... > > Are there any other widgets with :filter and :else options that I could > use to do something similar w/ a link? Specifically, use isbn or isbn13 in > link, but if they don't exist show this *other* link? I've been using [ext[ > link format, but need to do some if/then... > > On Sunday, January 3, 2021 at 8:38:38 AM UTC-6 [email protected] wrote: > >> Here is an example on falling back to the generic image if no ISBN fields >> are defined >> >> \define makeimg() >> <$vars isbn={{{[{!!isbn}!is[blank]else{!!isbn13}]}}}> >> <$image source={{{ [[ >> http://covers.librarything.com/devkey/dev-key-goes-here/medium/isbn/]addsuffix<isbn>] >> >> :filter[<isbn>!is[blank]] :else[[generic image URL]] }}}/> >> </$vars> >> \end >> >> <<makeimg>> >> > -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/5f3c7b00-065d-401b-a595-81b9f1a73f27n%40googlegroups.com.
