On Tuesday, November 6, 2018 at 4:03:09 PM UTC-8, TonyM wrote:
>
> I am trying to make a simply comparison between two variables or one
> variable and a fields content.
> eg; <<currentWiki>> and {{!!wiki-owner}}
> or <<currentWiki>> and <<wiki-owner>>
> I simply want a simple test or filter that will be true if they are the
> same
> and that will be false if they are the same
>
Although it might not be obvious, the $reveal widget can do this very
easily. Normally, the $reveal widget is used to compare a "text" value
with a value stored in the text field of a specified "state" tiddler, like
this:
<$reveal type="match" state="$:/state/SampleReveal1" text="show">
show this if state tiddler content matches text param
</$reveal>
However, there is an alternative syntax that allows comparisons between any
two values: while the "state" param can only use an implied reference to
the "text" field of a specified tiddler, the "default" param can use ANY
literla, field or variable reference. Simply OMIT the "state" param and
use the "default" param in it's place, like this:
<$reveal type="match" default={{somefield!!sometiddler}} text="show">
show this if somevariable value matches text param
</$reveal>
or
<$reveal type="match" default=<<somevariable>> text="show">
show this if somevariable value matches text param
</$reveal>
and... since the "text" param also can use ANY field or variable reference,
you can use <$reveal> to compare any two variables, like this:
<$reveal type="match" default=<<somevariable>> text=<<someOtherVariable>>>
show this if somevariable value matches text param
</$reveal>
and... you can use any of the valid "type" values to make the comparison,
including the recently added LT, GT, LTEQ and GTEQ types.
For example:
<$set name="todo" filter="[tag[todo]count[]]">
<$set name="done" filter="[tag[done]count[]]">
<$reveal type="match" default=<<todo>> text="0"> There is nothing to do.
</$reveal>
<$reveal type="nomatch" default=<<todo>> text="0">
<$reveal type="match" default=<<done>> text="0"> You haven't
started. </$reveal>
<$reveal type="LT" default=<<todo>> text=<<done>>> You're making
progress... keep going! </$reveal>
<$reveal type="match" default=<<todo>> text=<<done>>> You're half way
there... take a short break </$reveal>
<$reveal type="GT" default=<<todo>> text=<<done>>> You've done a
lot... but there's still some left </$reveal>
</$reveal>
</$set>
</$set>
Hope this helps.
enjoy,
-e
Eric Shulman
TiddlyTools.com: "Small Tools for Big Ideas!" (tm)
InsideTiddlyWiki: The Missing Manuals
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