Re: [Springframework-developer] Re: [Springframework-user] New technique for working with <spring:bind>

[Seth L. <se...@eh...>]

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Thanks Juergen for pointing out this post.


| Actually, Seth's version does *not* require less typing: It just
avoids repeating the command name. Without Seth's setNestedPath tag,
you'll get the 3 lines per field, saying "command.firstName"
respectively "command.lastName". I actually prefer the latter; I
personally don't think that such a setNestedPath tag adds value - except
for very repetitive forms where you reuse the same bind tag snippet for
various command names.

That's exactly why I would want it and use it.  I don't want to repeat
anything.  The setNestedPath tag follows very closely the bind tag.
That is, just helps with setting scope of a bean that bind is using.
It's entirely optional, too.  The bind tag works/should work just fine
without it.  I've found it very useful in developing our JSPs that use
many fields, where many of the fields are withing nested objects.

I still believe it saves typing for anything more than 2 fields.  Also,
it saves a chance for error, as I'm not repeating the command name over
and over.

Having said that...

|
| If someone wants to reuse bind tags with specific HTML portions,
simply turn them into parameterizable snippets: for example, with JSP
2.0's tag files. It should be straightforward to define Struts-style
"html:xxx" custom tags this way, using the bind tag (or
RequestContext/Errors scriptlets) underneath. I think this is a viable
alternative to WebWork's way of custom tags rendering Velocity
templates, being equally powerful.

That's exactly what I, and I suspect many, people are doing right now.
I've wrapped the bind tag and the logic to render the HTML (for
instance, select and option tags) inside a tag file.  Using the
struts-esque tag files + setNestedPath, I'm pretty close to very minimal
JSP typing.

I see setNestedPath as an optional, but extremely helpful tag when
writing anything but the most simple JSP page.  I then see a separate
set of convinience tags/tag files that render HTML markup as a really
nice value add that everyone will end up writing anyway.

See the original wiki page that started this.  There is a comment there
that gives examples of these tag files.

My ideal looking page (and what I'm using now):

<springx:setNestedPath path="command">

First Name: <form:text name="firstName"/>
Last Name: <form:text name="lastName" />

Address:
<springx:setNestedPath path="address">
Street1: <form:text name="street1"/>
Street2: <form:text name="street2"/>
...
</springx:setNestedPath>

<input type="submit"/>
</springx:setNestedPath>

Hope that helps.

Thanks,
Seth
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