On 2/27/21 12:48 PM, JG wrote:
Hi,

I know that one can do the following:
tag(attribute='#{dexpression}')

But, is there a way to deal with attributes that don't get assigned values.
That is, is there a way to produce
<tag>
or
<tag attribute>
depending on a boolean variable?

Of course one can do:
- if (booleanVariable)
  tag(attribute)
   include ...
- if (!booleanVariable)
  tag
   include ...

But this seems rather messy.

Yes, if you assign a boolean value to it directly, then if true, the attribute is included, if not, it's not.

e.g.:

tag(attribute=booleanVariable)

Note the lack of quotes. If you us an expression without quotes in diet, it becomes an interpolation. In the special case that it's a boolean, it becomes a switch to tell whether to include the attribute or not. If it's a complex expression you might need parentheses:

tag(attribute=(booleanVariable ? true : false))

-Steve

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