Hi Tobias, I can see it's not easy to explain my use case.
In some occasions I find it easier to pass some parameters to a template. It allows me to write more generic templates and re-use them in different contexts So inside the template I put some placeholders for variables to be defined, like $(somevariable)$. When the variables are defined when the template is called, it works fine. But I'd like to be able to call the template without defining all the variables : to have default values. The default value of a variable is supposed to be used by the template when the variable is not defined when the template is called. So inside the template I have to check whether the variable is defined or not : If the variable is defined, that's fine, let's use its value. If not, the default value is affected to the variable. The set widget allows to affect a value to a variable according to the result of a filter (empty list of tiddlers or not). So I tried to go this way. But my problem was to design the filter. I ended with a fancy filter. I was wondering if there is a better way to do that : - using something else than the set widget with the filter and emptyValue, - or using a more straightforward filter. I hope it's a bit clearer now ? FrD Le samedi 19 septembre 2015 16:54:28 UTC+2, Tobias Beer a écrit : > > Hi Frd, > > >> But it's twisted and I was wondering if there was a simpler way to >> specify a default value. >> > > A "default" how? When your filter returns empty, then you have > *emptyValue* to cater for a default. > Otherwise at what point do you want your default to kick in if not for > when your computed value is blank? > > So, I don't see why your third expression would declare a value parameter, > because I don't see when that would ever kick in. > > Best wishes, > > — tb > -- 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 post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/fb8b83c7-93dd-42f0-a4cd-2b6dae2fc91b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
