OK, now I'm going to show my lack of knowlege, whats the best way to
access the map?
I was going to do the following in an iterator over an array of
composite objects constructed in the display action;
<s:hidden name="composites[count].id" />
<s:textfield name="composites[count].fieldname" />
<s:textvalue name="composites[count].fieldvalue" />
would using a map improve on this?
Dave Newton wrote:
--- Laurie Harper <[EMAIL PROTECTED]> wrote:
Just as a little added pointer, instead of
CompositeObject[] getPairs() you could make that
Map<String,CompositeObject> getPairs(), where the
map key would be the field ID. That would handle
non-zero-based, non-sequential field IDs cleanly.
Sorry, that's what I was attempting to get at, but I'm
having spurts of business today and I flailed a bit :/
d.
Al Sutton wrote:
Ahhhh... (lightbulb moment)..... I thought you
could only use array indexes
in the value attribute of s: tags.
So if I have a composite object which had
fieldName and fieldValue I could
put;
CompositeObject[] getPairs()
in the action which uses the JSP to display the
data and
setPairs(CompositeObject[] pairs)
in the action which updates the database.
This is great, the only other thing is I've now
got to put a mapping in
place because the original IDs are generated by
Hibernate and will probably
be non-sequential and almost definatley non-zero
based, but that's a non S2
story.
Many Many Many thanks.
Al.
-----Original Message-----
From: Dave Newton [mailto:[EMAIL PROTECTED]
Sent: 16 May 2007 18:37
To: Struts Users Mailing List
Subject: RE: [Fwd: Best method for dynamic fields
round trip]
Just off of the top of my head I would probably
use a collection or map of
name/values... so the tag might look something
like:
<s:textfield name="pairs[fieldId].fieldName"/>
<s:textfield
name="pairs[fieldId].fieldValue"/>
etc. (with minor syntax changes depending on how
things are shuffled to the
JSP).
d.
--- Al Sutton <[EMAIL PROTECTED]> wrote:
The main part I'm having trouble with is keeping
the association
between the editable field name and the editable
value, so if we start
with
Phone1 : 555-12345
And the user changes the field name and value to
be
Fax : 555-12346
Getting the action to recognise that it should
update the both values.
This is part of porting an app to s2, and
currently it's don using two
input fields which include an id, so it's
basically
<input type="text" name="fieldname_<%=fieldId%>"
value="phone1">
<input type="text" name="fieldvalue_<%=fieldId%>"
value="555-12345">
Currently the servlet taking the input goes
through the servlet
request parameter map and when it finds a request
parameter that
starts with fieldname_ it gets the corresponding
fieldvalue_ entry and
updates the field record with the id.
If there is a nice way I'd appreciate a pointer
because at the moment
it looks like we're going to have to use the same
method of going
through the parameter map which feels like it's a
bit of a hack and
makes unit testing a bit more tricky.
Al.
-----Original Message-----
From: Dave Newton [mailto:[EMAIL PROTECTED]
Sent: 16 May 2007 18:19
To: Struts Users Mailing List
Subject: RE: [Fwd: Best method for dynamic fields
round trip]
--- Al Sutton <[EMAIL PROTECTED]> wrote:
That's just what I was looking for, thanks Dave.
I
was looking for a
way to do it with <s:xxx/> tags,
so
I'm now more confident it's best done without
them
as opposed to
thinking I might have missed something.
Well, I'm just one opinion :)
It could still be done with the S2 tags if, say,
you had a map of
dynamic parameter names (or ids, etc.) and
iterate over the map etc.
It may depend more on how the dynamic parameters
are defined or
declared, etc. I think either way is acceptable,
though (the map idea
might be easier in some ways)... it just depends.
d.
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