Ach. my bad, I just checked how "name" is resolved in "UIBean" instead
of analysing it into deep and I messed up things with "value"
attribute, my explanation below
niedz., 23 lut 2020 o 23:06 John Bush <jtb...@mchsi.com> napisał(a):
> <s:iterator value="displayColumnList" var="a">
> <s:textfield name="%{formcolumnName}" />
This works because of %{} and "a" was pushed onto the top of
ValueStack, so all its properties are accessible
> <s:textfield name="formcolumnName" />
This won't work because "name" is evaluated but only if it contains
%{} - this allows build dynamic names like: name="user_%{expr}_id" or
name="%{user_id}"
> <s:textfield name="%{a.formcolumnName}" />
As "a" was pushed into to the ValueStack, we must strictly say which
scope we are interested in, so we must use "#" to use "a" scope:
name="%{#a.formcolumnName}"
We can use "a" directly: name="%{a}" but then it will be evaluated as
"a.toString()" because "name" expects String
Sorry for my misleading answer before :(
Please let me know if I should extend the Tag Syntax guide
https://struts.staged.apache.org/tag-developers/tag-syntax.html
Regards
--
Łukasz
+ 48 606 323 122 http://www.lenart.org.pl/
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