Chris is correct you need some kind of type coachers to store Street in the
url but in this case I don't think you need street/streets in the url only
the variables in the form. I don't do much ajax so I like to use
setupRender but perhaps the best way to get the set of streets is with a
method like
@Cached
public Set<Street> getStreets() {
Set<Street> streets = new HashSet();
...
return streets;
}
This way it's created when needed and the @Chached will cache it during the
current request. This works for ajax/forms whatever.
Using @Persist on the streets field and doing the query in onSucess will
work but persists the query data in the session. If you do this a lot it
will eventually become a problem.
On Wednesday, April 27, 2016, Chris Poulsen <mailingl...@nesluop.dk> wrote:
> When you need to persist non-trivial state (and not want to put it in the
> session, like standard @Persist does), you need to help tapestry figure out
> how to map between a String and the persistent state.
>
> There are some coercers for the most trivial types and projects like
> tapestry-hibernate/jpa also automatically let tapestry know how to map
> between String and Entity instances.
>
> Some tapestry components allows you to register an encoder for the mapping
> back and forth and on some pages you might need to perform the mapping
> manually ( using activate/passivate )
>
> Barry suggested a variation of this (because the parameter he passes is a
> String which requires no further translation) and then you have the chance
> to initialize "users" prior to rendering.
>
> Beware that setupRender phase is not always executed; ajax requests, form
> submissions etc. may bypass it - Activate is always performed - So one
> should be careful about the amount of work performed during activation.
>
>
> > And Tapestry thinks "model.Street$0040141f225" is a String but it should
> be
> > a Bean.
> >
> > I tried adding Serializable on my Street bean but it doesn't change the
> > error.
>
> As tapestry does not know how to map from your "Street" instance to a
> String, if attempts to use the ordinary Java toString(), probably resulting
> in something like "Street@141f225" and when this string is passed back in,
> it has no chance of getting back to the correct Street instance.
>
> A ValueEncoder<Street> could probably do this for you automatically (you
> have to let it know how to map from your instance to a String and back
> again).
>
> Another possibility is to remove the @Activation* parameters and perform
> the mapping in the page activate/passivate methods.
>
> HTH.
>
> --
> Chris
>
>
>
> On Wed, Apr 27, 2016 at 8:20 AM, Morgan Hautman <morgan.haut...@gmail.com
> <javascript:;>>
> wrote:
>
> > Hi,
> >
> > I didn't managed to get it work with @ActivationRequestParameter.
> > I tried everything out and the last try was with @Persist and it worked,
> so
> > I'm keeping that because nothing else works..
> >
> > Thank you all.
> >
> > Regards,
> > Morgan
> >
> > 2016-04-26 13:06 GMT+02:00 Barry Books <trs...@gmail.com <javascript:;>
> >:
> >
> > > Sorry my previous response a bit short. I was on my phone. Something
> like
> > > this hibernate example should work. It's better to store the query
> > > parameters in the URL instead of the session. If you use the session
> > > returning to the page will rerun the last query which seems a bit weird
> > for
> > > a web app. All the work is done in setupRender instead of onSuccess
> > because
> > > onSuccess ends with a redirect so no page is rendered.
> > >
> > > @Property
> > > List<User> users;
> > >
> > > @Property
> > > @ActivationRequestParameter
> > > String lastName;
> > >
> > > @Inject
> > > Session session;
> > >
> > > @SetupRender
> > > void setupRender() {
> > > if ( lastName != null ) {
> > > users = session.createQuery(" from User where lastName =
> > > :lastName").setParameter("lastName",lastName).list();
> > > }
> > > }
> > >
> > >
> > >
> > >
> > > On Tuesday, April 26, 2016, Morgan Hautman <morgan.haut...@gmail.com
> <javascript:;>>
> > > wrote:
> > >
> > > > Hi,
> > > >
> > > > The problem was that I had no get/setters in my Bean I displayed..
> > > >
> > > > Now it renders well on the first page but when I click on the second
> > > page I
> > > > have:
> > > >
> > > > Caused by: org.apache.tapestry5.ioc.util.UnknownValueException: Could
> > not
> > > > find a coercion from type java.lang.String to type java.util.Set.
> > > >
> > > > I think this is because the url looks like this:
> > > >
> > > >
> > >
> >
> http://localhost:8090/***/searchstreet.grid.pager/2?t:ac=model.Street$0040141f225/model.Street$0040868971
> > > > .
> > > > ..
> > > >
> > > > And Tapestry thinks "model.Street$0040141f225" is a String but it
> > should
> > > be
> > > > a Bean.
> > > >
> > > > I tried adding Serializable on my Street bean but it doesn't change
> the
> > > > error.
> > > >
> > > > Any idea?
> > > >
> > > > Regards,
> > > > Morgan
> > > >
> > > >
> > > > 2016-04-25 16:05 GMT+02:00 Barry Books <trs...@gmail.com
> <javascript:;>
> > > <javascript:;>>:
> > > >
> > > > > Use @pageactvation context and put what's in your onSucess method
> in
> > > > > setupRender
> > > > >
> > > > > On Monday, April 25, 2016, Morgan Hautman <
> morgan.haut...@gmail.com <javascript:;>
> > > > <javascript:;>>
> > > > > wrote:
> > > > >
> > > > > > Hi,
> > > > > >
> > > > > > Thank you guys.
> > > > > > I first tried the fix stated by Felix (@PageActivationContext)
> but
> > it
> > > > > > doesn't work.
> > > > > > I then tried the ajax way Nathan provided and I have better
> results
> > > but
> > > > > my
> > > > > > grid shows 4 pages/links but I don't see any data.
> > > > > >
> > > > > > I added
> > > > > >
> > > > > > <t:zone t:id="zoneGrid" id="zoneGrid">
> > > > > > <div/>
> > > > > > <t:grid source="streets" row="street">
> > > > > > *[Grid here]*
> > > > > > </t:grid>
> > > > > > </t:zone>
> > > > > >
> > > > > > but still no luck, any one has a pointer?
> > > > > >
> > > > > > Regards,
> > > > > > Morgan
> > > > > >
> > > > > > 2016-04-25 12:07 GMT+02:00 Nathan Quirynen <
> > > > nat...@pensionarchitects.be <javascript:;> <javascript:;>
> > > > > > <javascript:;>>:
> > > > > >
> > > > > > > Hey,
> > > > > > >
> > > > > > > By returning "this" in the onSuccess event, a redirect happens
> > > > > resulting
> > > > > > > in a new request. If you want to preserve data between
> requests,
> > > you
> > > > > will
> > > > > > > have to save it into the http session.
> > > > > > > If you add http session persistence, the data will be available
> > > > after a
> > > > > > > new request. <
> > http://tapestry.apache.org/persistent-page-data.html
> > > >
> > > > > > >
> > > > > > > Simple example for your case:
> > > > > > >
> > > > > > > @Persist
> > > > > > > @Property
> > > > > > > private Set<Street> streets;||
> > > > > > >
> > > > > > >
> > > > > > > Be careful: in this case the whole streets set is saved into
> the
> > > http
> > > > > > > session and will remain there until the end of the session (or
> > > until
> > > > > you
> > > > > > > remove it manually).
> > > > > > > You could also persist the form vaues instead and then in
> > > setupRender
> > > > > > > event fill the trees set based on these values.
> > > > > > > Also you can make use of PersistenceConstants.FLASH to let
> > Tapestry
> > > > > > remove
> > > > > > > it from the session after first access automatically.
> > > > > > > See more info:
> > > > http://tapestry.apache.org/persistent-page-data.html||
> > > > > > >
> > > > > > > Another option is making use of AJAX where the updated grid
> html
> > is
> > > > > sent
> > > > > > > back in the response and updated on the client side. If you
> want
> > to
> > > > > > achieve
> > > > > > > this you'll need to add a Zone around the grid and make your
> Form
> > > > > submit
> > > > > > > with AJAX.
> > > > > > >
> > > > > > > Your case:
> > > > > > >
> > > > > > > <t:form t:zone="zoneGrid">
> > > > > > > ...
> > > > > > > <t:zone t:id="zoneGrid" id="zoneGrid"
> > > > > > > <t:grid source="streets" row="street">
> > > > > > > </t:grid>
> > > > > > > </t:zone>
> > > > > > > <t:form>
> > > > > > >
> > > > > > > @Inject
> > > > > > > private AjaxResponseRenderer ajax;
> > > > > > > @InjectComponent
> > > > > > > private Zone zoneGrid;
> > > > > > >
> > > > > > > void onSuccess() {
> > > > > > > ...
> > > > > > > ajax.addRender(zoneGrid);
> > > > > > > }
> > > > > > >
> > > > > > > See more info: http://tapestry.apache.org/ajax-and-zones.html
> > > > > > >
> > > > > > >
> > > > > > > Hope this helps u a bit.
> > > > > > > Nathan
> > > > > > >
> > > > > > >
> > > > > > > On 25/04/16 11:05, Morgan Hautman wrote:
> > > > > > >
> > > > > > >> Hi,
> > > > > > >>
> > > > > > >> I'm trying to make a make grid update when submitting a form
> > > within
> > > > > the
> > > > > > >> same page.
> > > > > > >>
> > > > > > >> Here is the code:
> > > > > > >>
> > https://gist.github.com/mhautman/e178fdcca46331e1f4932b1cd7074de7
> > > > > > >>
> > > > > > >> The page gets refreshed but the table/source doesn't seem to
> be
> > > > > updated.
> > > > > > >>
> > > > > > >> Any help is greatly appreciated.
> > > > > > >>
> > > > > > >> Regards,
> > > > > > >> Morgan
> > > > > > >>
> > > > > > >>
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
