>>>>> "Shengmeng" == Shengmeng Liu <[EMAIL PROTECTED]> writes:
Shengmeng> Hi,
Shengmeng> I agree with you that the property attribute for form element is
"overloaded" to
Shengmeng> have two meanings. It determines both:
Shengmeng> 1)which getter method will be invoked on the form bean to obtain its
initial value;
Shengmeng> 2)which setter method will be invoked on the form bean (or the name of
the request
Shengmeng> parameter will be used for this element) to store its current value.
Shengmeng> Well, I aslo feel that handling situations where multiple checkboxes
share the same
Shengmeng> name is quite confusing and complex in Struts, as the form-bean
property refers to
Shengmeng> a SINGLE data row, but the request parameter can have an ARRAY of
values.
Shengmeng> It seems to me that one straightforward workaround for this is to avoid
multiple
Shengmeng> checkboxes sharing the same name, by using different names for all
those fields.
Shengmeng> Such as:
Shengmeng> group_check1="on"&group_check2="on"
Shengmeng> where value can only be "on" and parameter name now indicates its real
value.
And how do you vary the property names when you're populating the components
from a bean collection in an "iterate" loop?
It seems like "html:multibox" would be applicable here, but I can't see from
the documentation exactly how it is used.
The situation seems to be the same with "html:radio".
Ideally, when I have a set of radio buttons, and I'm using "logic:iterate" to
iterate over them, I would want the "name" of the component to reflect the
"choice name" I'm making, and the value should be the "choice value", which is
NOT "on", "off", "true", or "false". I would need an attribute of my bean to
indicate whether the radio button is initially on or not. One point of
confusion is that the documentation for "html:checkbox" mentions that
"property" needs to be a boolean, but the doc for "html:radio" doesn't mention
this. I would assume it also needs to be a boolean, but I'm not certain.
When this form is submitted, I would want the request parameter to be the same
as my "choice name", and the value to be my "choice value".
For instance, if I have a page to allow a user to select a "drink size" of
"small", "medium", or "large", I would use a collection of "SizeChoice" beans,
each of which has fields like this:
String sizeId;
String sizeDisplay;
boolean enabled;
So, I would want the button to be ON if "enabled" is true, but I want the
submitted request parameter name to be "drinkSize" and a value of "medium" (or
"small" or "large").
However, it appears that I can't do anything like this with "html:radio". By
specifying the "property" value of "enabled", that sets the name of the request
parameter to "enabled". The resulting value will need to be a boolean string,
like "on" or "true". If I have more than one radio button in the group, then
they'll all have the same name.
I would assume I'm trying to use this in the wrong way. I would appreciate
some guidance and examples on the proper way to use this component. I can't
seem to find good examples using radio buttons or checkboxes.
--
===================================================================
David M. Karr ; Best Consulting
[EMAIL PROTECTED] ; Java/Unix/XML/C++/X ; BrainBench CJ12P (#12004)
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