2016-03-04 20:06 GMT+01:00 Steven Willis <swil...@cargurus.com>: > I think I understand what you're saying, a param tag doesn't correspond to > any directly generated html tag, so its 'value' attribute is special and gets > evaluated. Whereas other tags, like 'hidden' correspond to html elements that > actually have a 'value' attribute themselves, so the literal value you pass > in just gets set straight on the html element.
That's good but forget all these as I was wrong :) > However, this page > https://struts.apache.org/docs/tag-syntax.html#TagSyntax-valueisanObject%21 > says the following: > >> Since value is not a String, whatever is passed to value is evaluated as an >> expression - NOT a String literal. >> >> <s:textfield key="state.label" name="state" value="ca"/> >> >> If a textfield is passed the value attribute "ca", the framework will look >> for a property named getCa. > > > That seems like it's describing the behavior I experience (and you describe) > for the 'param' tag where the string gets evaluated, and not what I > understand you to be saying should happen with 'textfield' and other 'input' > type tags. I actually just tried with 'hidden' and 'textfield' tags and any > plain string (no %{} or ${}) inside quotes is inserted literally into the > html and not evaluated. So is the description at the URL given above > incorrect? Should it only be about the 'value' attribute on the 'param' tag? > Are there other tags whose 'value' attributes act like 'param'? Yes, that's the proper behaviour but there is an option called "altSyntax" which modifies Struts' behaviour when to treat a String as an expression. And as it is set to "true" by default, Struts assumes that all expressions must be enclosed in %{} as in other case they won't be evaluated. The "altSyntax" comes from WebWork and the whole framework is written based on such assumption. And I think "altSyntax" option should be dropped but %{} must remain required for expressions. https://struts.apache.org/docs/alt-syntax.html Regards -- Łukasz + 48 606 323 122 http://www.lenart.org.pl/ --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org
