Hi Arnold, I don't see why a solution with request parameters is more elegant than using a JSF/Spring managed bean?
Best regards, Bart On Fri, Nov 20, 2009 at 08:21, Arnold Preg <ap...@mailbox.hu> wrote: > Hi Bart, > > I asked it already in the spring forum but nobody answered. I read the > spring reference already but I think it's not particular and I did not see > example for this problem in the example program neither. There is a > requestParameters EL variable to reach the request parameters as I know, but > the problem is I can't send an appropriate parameter. > I will looking for solution in this < > http://www.apress.com/book/view/9781430216247> book too. > The scoped bean thing (Spring call it Spring Managed Bean) could works like > a charm just like in plain JSF solutions, but I hoped there is an elegant > way to handle this like the f:param in commandLink. > Thank you for your help. > > > > On 2009.11.19. 10:32, Bart Kummel wrote: > >> Hi Arnold, >> >> I'm afraid I can't help you with the parameter sending problem. I think >> you >> should read the Spring WebFlow documentation. They must have implemented >> an >> elegant way to handle parameters. I think you should focus on setting a >> value on a scope or in a bean that is on a scope. That way JSF and/or SWF >> will do the hard parameter encoding/decoding for you. Generally speaking, >> with JSF, you should be messing around with GET or POST parameters. I >> can't >> imaging SWF changes this. But as said, I don't know anything about SWF. >> Perhaps you should ask this question on an SWF related mailing list or >> forum. >> >> Composite Component: I think that is an elegant way to implement it, as I >> said. Remember to not use any trh tag in your composite component. What >> you >> want can be achieved by using standard components, like outputText, >> various >> panelXyz variants, etc. In your main page you can do the iteration. You >> could use<tr:iterator>, but with Facelets, it is also possible to use JSTL >> iteration. >> >> Best regards, >> Bart >> >> On Wed, Nov 18, 2009 at 20:06, Arnold Preg<ap...@mailbox.hu> wrote: >> >> >> >>> I accept that making a composite component cleans the code etc. But I >>> still >>> have to iterate over the collection of books somehow, e.g. with >>> tr:iterator, >>> right? >>> And I don't know how does it solve the parameter sending problem. >>> With tr:inputHidden the POST parameters looks like this: >>> >>> _noJavaScript false >>> *j_id33:0:j_id36:selectedBookId 1 >>> j_id33:1:j_id36:selectedBookId 2 >>> j_id33:2:j_id36:selectedBookId 3 >>> j_id33:3:j_id36:selectedBookId 4 * >>> javax.faces.ViewState H4sIAAAAAAAA... >>> org.apache.myfaces.trinidad.faces.FORM j_id30 >>> source j_id33:0:j_id36:j_id41 >>> >>> The point is the parameter's name is *"j_id33:0:j_id36:selectedBookId" >>> *and >>> so on. So, I could reference it on this name only in the flow definition, >>> but of course it's not good. I need one form for one hidden field. >>> >>> >>> On 2009.11.18. 11:51, Bart Kummel wrote: >>> >>> >>> >>>> Okay, now I get what you want. Good idea to post an image! >>>> >>>> If I were you, I would craete a Facelets Composition Component to render >>>> a >>>> single book's details (image, title, etc.) Inside that Composition >>>> Component >>>> you could use various Trinidad components to render the image, the >>>> price, >>>> the link, etc. (Use Google to find more info on Facelets Composition >>>> Components.) >>>> >>>> Then you could use e.g. a<tr:panelGroupLayout> or a<h:panelGrid> or >>>> something like that to distribute the items over a page as desired. >>>> >>>> As for passing on the selected book ID, have you tried using >>>> <tr:inputHidden>? >>>> >>>> Best regards, >>>> Bart >>>> >>>> On Wed, Nov 18, 2009 at 11:20, Arnold Preg<ap...@mailbox.hu> wrote: >>>> >>>> >>>> >>>> >>>> >>>>> Hi, >>>>> >>>>> If I can reach this<http://i48.tinypic.com/2q207ib.png>( >>>>> http://i48.tinypic.com/2q207ib.png ) look with skinning, then yes. >>>>> (In >>>>> essence I don't need column headers, pagination bar, radiobuttons etc. >>>>> Just >>>>> the layout and collection handling function I need from tr:table in >>>>> this >>>>> case.) >>>>> I think SWF can handle POST and GET parameters equally. >>>>> >>>>> >>>>> >>>>> On 2009.11.18. 10:33, Bart Kummel wrote: >>>>> >>>>> >>>>> >>>>> >>>>> >>>>>> Hi, >>>>>> >>>>>> If you only want to change the appearance, you should definitely take >>>>>> a >>>>>> look >>>>>> at Trinidad's skinning >>>>>> features<http://myfaces.apache.org/trinidad/devguide/skinning.html>. >>>>>> >>>>>> You can change the appearance of every Trinidad component this way, >>>>>> while >>>>>> keeping the functionality. Is that what you're looking for? >>>>>> >>>>>> As for you other question: what type of parameters does SWF expect? >>>>>> POST >>>>>> or >>>>>> GET? >>>>>> >>>>>> Best regards, >>>>>> Bart >>>>>> >>>>>> On Wed, Nov 18, 2009 at 09:35, Arnold Preg<ap...@mailbox.hu> >>>>>> wrote: >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>>> Hi, >>>>>>> >>>>>>> I have to use Trinidad components, and minimalize the use of manual >>>>>>> HTML >>>>>>> or js codes. I do not like to use trh: components, but the tr:table >>>>>>> appearance has not been being suitable and I did not want to write >>>>>>> own >>>>>>> component because I thought the tr:table and iterate will do the work >>>>>>> and >>>>>>> I never wrote an own component before yet, so this was left. >>>>>>> Although, >>>>>>> as >>>>>>> I >>>>>>> see the own component could be the best solution to reach the proper >>>>>>> appearance. But one question is still here: How to send parameters >>>>>>> with >>>>>>> tr:commandButton to SWF correctly and easy? Thank you for your >>>>>>> patience. >>>>>>> >>>>>>> >>>>>>> On 2009.11.18. 8:54, Bart Kummel wrote: >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>>> Hi, >>>>>>>> >>>>>>>> I'm afraid I still don't understand exactly what you need. However, >>>>>>>> I >>>>>>>> still >>>>>>>> think you shouldn't use the approach with the<trh:tableLayout>, etc. >>>>>>>> (Should you need *some* HTML for layout of your page, with Facelets >>>>>>>> you >>>>>>>> can >>>>>>>> use HTML in your Facelet, so you don't need any<trh:...> tag for >>>>>>>> that >>>>>>>> anymore.) >>>>>>>> >>>>>>>> If you want to use JSF, you should use JSF components that do the >>>>>>>> hard >>>>>>>> work >>>>>>>> for you. You can search the Trinidad, Tomahawk and Tobago libraries >>>>>>>> or >>>>>>>> other >>>>>>>> component libraries for a component that suits your needs. If >>>>>>>> nothing >>>>>>>> can >>>>>>>> be >>>>>>>> found, you can create your own JSF component. If you prefer to be >>>>>>>> super >>>>>>>> flexible in the HTML output, you should perhaps consider a framework >>>>>>>> that >>>>>>>> isn't component based, like JSF. >>>>>>>> >>>>>>>> Best regards, >>>>>>>> Bart >>>>>>>> >>>>>>>> On Tue, Nov 17, 2009 at 20:28, Arnold Preg<ap...@mailbox.hu> >>>>>>>> wrote: >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>>> On 2009.11.17. 13:50, Bart Kummel wrote: >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>>> Hi, >>>>>>>>>> >>>>>>>>>> I don't have any experience with Spring WebFlow, so I can't help >>>>>>>>>> you >>>>>>>>>> on >>>>>>>>>> that >>>>>>>>>> part. But when it comes to your other question, as I understand >>>>>>>>>> you >>>>>>>>>> right, >>>>>>>>>> you want to spread your list of books over multiple pages if the >>>>>>>>>> number >>>>>>>>>> of >>>>>>>>>> books exceeds a certain value, right? >>>>>>>>>> >>>>>>>>>> This is simple to achieve, but you shouldn't use<trh:tableLayout>. >>>>>>>>>> You >>>>>>>>>> should use<tr:table> instead.<tr:table> will do all hard >>>>>>>>>> work >>>>>>>>>> for >>>>>>>>>> you, >>>>>>>>>> including the pagination of your data. Please read the >>>>>>>>>> documentation >>>>>>>>>> of >>>>>>>>>> <tr:table>< >>>>>>>>>> >>>>>>>>>> http://myfaces.apache.org/trinidad/trinidad-api/tagdoc/tr_table.html >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>>> first. >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>> And regarding your<tr:subform>: you are right that you don't use >>>>>>>>>> it >>>>>>>>>> properly. In this case, it can be left out, you don't need it >>>>>>>>>> here. >>>>>>>>>> >>>>>>>>>> One last remark: as I look at your code, I get the impression that >>>>>>>>>> you >>>>>>>>>> don't >>>>>>>>>> get the idea of JavaServer Faces. The idea is to use components >>>>>>>>>> that >>>>>>>>>> render >>>>>>>>>> a user interface for you. Those components perform all the hard >>>>>>>>>> work >>>>>>>>>> for >>>>>>>>>> you. Generally speaking, you shouldn't be fiddling with repetition >>>>>>>>>> in >>>>>>>>>> any >>>>>>>>>> JSF page definition. In this example, if you use a<tr:table>, the >>>>>>>>>> only >>>>>>>>>> thing you have to do is tell the table where the collection is >>>>>>>>>> that >>>>>>>>>> you >>>>>>>>>> want >>>>>>>>>> to show. The table component will do all the hard work, including >>>>>>>>>> the >>>>>>>>>> repetition and pagination. I hope this helps. Good luck! >>>>>>>>>> >>>>>>>>>> Best regards, >>>>>>>>>> Bart Kummel >>>>>>>>>> >>>>>>>>>> On Tue, Nov 17, 2009 at 10:01, Arnold Preg<ap...@mailbox.hu> >>>>>>>>>> wrote: >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>>> Hi, >>>>>>>>>>> >>>>>>>>>>> I'm newbie, so sorry for stupid questions. I'm trying to use >>>>>>>>>>> Facelets >>>>>>>>>>> 1.1.14. SWF 2.0.8. Spring 2.5.6. Apache Trinidad 1.2.12. JBoss >>>>>>>>>>> EL >>>>>>>>>>> 2.0.1. >>>>>>>>>>> and Hibernate JPA imp. but I think it's not relevant now. My >>>>>>>>>>> English >>>>>>>>>>> not >>>>>>>>>>> too >>>>>>>>>>> good let the code snippets speak because of this rather. >>>>>>>>>>> >>>>>>>>>>> borderLayout.xhtml >>>>>>>>>>> >>>>>>>>>>> <tr:document xmlns:ui="http://java.sun.com/jsf/facelets"; >>>>>>>>>>> xmlns:h="http://java.sun.com/jsf/html"; >>>>>>>>>>> xmlns:f="http://java.sun.com/jsf/core"; >>>>>>>>>>> xmlns:trh="http://myfaces.apache.org/trinidad/html"; >>>>>>>>>>> xmlns:tr="http://myfaces.apache.org/trinidad"; >>>>>>>>>>> title="#{pageTitle}"> >>>>>>>>>>> <tr:form id="mainForm"> >>>>>>>>>>> <tr:panelBorderLayout> >>>>>>>>>>> <f:facet name="top"> >>>>>>>>>>> <ui:include src="searchbar.xhtml" /> >>>>>>>>>>> </f:facet> >>>>>>>>>>> <ui:insert name="pageContent" /> >>>>>>>>>>> </tr:panelBorderLayout> >>>>>>>>>>> </tr:form> >>>>>>>>>>> <ui:debug /> >>>>>>>>>>> </tr:document> >>>>>>>>>>> >>>>>>>>>>> page.xhtml >>>>>>>>>>> >>>>>>>>>>> <ui:composition xmlns="http://www.w3.org/1999/xhtml"; >>>>>>>>>>> xmlns:h="http://java.sun.com/jsf/html"; >>>>>>>>>>> xmlns:f="http://java.sun.com/jsf/core"; >>>>>>>>>>> xmlns:ui="http://java.sun.com/jsf/facelets"; >>>>>>>>>>> xmlns:tr="http://myfaces.apache.org/trinidad"; >>>>>>>>>>> xmlns:trh="http://myfaces.apache.org/trinidad/html"; >>>>>>>>>>> xmlns:test="http://www.my.net/some/arbitrary/namespace"; >>>>>>>>>>> template="/WEB-INF/layouts/borderLayout.xhtml"> >>>>>>>>>>> >>>>>>>>>>> <ui:param name="pageTitle" value="Home" /> >>>>>>>>>>> <ui:define name="pageContent"> >>>>>>>>>>> <trh:tableLayout width="75%" borderWidth="0" cellSpacing="10" >>>>>>>>>>> halign="center"> >>>>>>>>>>> <trh:rowLayout> >>>>>>>>>>> <ui:repeat var="book" value="#{bestsellers}" offset="0" size="3"> >>>>>>>>>>> <!--<tr:iterator var="book" first="0" rows="4" >>>>>>>>>>> value="#{bestsellers}"> >>>>>>>>>>> --> >>>>>>>>>>> <trh:cellFormat valign="bottom"> >>>>>>>>>>> <tr:commandLink action="selectBook2SeeDetails" >>>>>>>>>>> text="#{book.title}"> >>>>>>>>>>> <f:param name="selectedBookId" value="#{book.bookId}" /> >>>>>>>>>>> </tr:commandLink> >>>>>>>>>>> >>>>>>>>>>> <!-- Probably I don't use the subform properly --> >>>>>>>>>>> *<tr:subform> >>>>>>>>>>> <tr:commandButton text="Add to cart" action="add2Cart"/> >>>>>>>>>>> <input type="hidden" name="selectedBookId" value="#{book.bookId}" >>>>>>>>>>> /> >>>>>>>>>>> </tr:subform>* >>>>>>>>>>> >>>>>>>>>>> </trh:cellFormat> >>>>>>>>>>> </ui:repeat> >>>>>>>>>>> <!--</tr:iterator> --> >>>>>>>>>>> </trh:rowLayout> >>>>>>>>>>> </trh:tableLayout> >>>>>>>>>>> </ui:define> >>>>>>>>>>> </ui:composition> >>>>>>>>>>> >>>>>>>>>>> flow.xml >>>>>>>>>>> >>>>>>>>>>> <?xml version="1.0" encoding="UTF-8"?> >>>>>>>>>>> <flow xmlns="http://www.springframework.org/schema/webflow"; >>>>>>>>>>> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; >>>>>>>>>>> xsi:schemaLocation=" >>>>>>>>>>> http://www.springframework.org/schema/webflow >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> http://www.springframework.org/schema/webflow/spring-webflow-2.0.xsd >>>>>>>>>>> "> >>>>>>>>>>> >>>>>>>>>>> <persistence-context /> >>>>>>>>>>> <var name="cart" class="bookstore.domain.Cart" /> >>>>>>>>>>> <view-state id="home"> >>>>>>>>>>> <on-render> >>>>>>>>>>> <evaluate expression="catalogService.getAllBooks()" >>>>>>>>>>> result="viewScope.bestsellers"></evaluate> >>>>>>>>>>> </on-render> >>>>>>>>>>> <transition on="selectBook2SeeDetails" to="reviewBookDetails"> >>>>>>>>>>> <set name="flowScope.selectedBook" >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> value="catalogService.getBookById(requestParameters.selectedBookId)" >>>>>>>>>>> /> >>>>>>>>>>> </transition> >>>>>>>>>>> </view-state> >>>>>>>>>>> >>>>>>>>>>> <global-transitions> >>>>>>>>>>> <transition on="add2Cart"> >>>>>>>>>>> <evaluate >>>>>>>>>>> <!-- Maybe it would be better to use the bestsellers list of Book >>>>>>>>>>> entities >>>>>>>>>>> but then I guess the place of code that should iterate over the >>>>>>>>>>> list >>>>>>>>>>> to >>>>>>>>>>> find >>>>>>>>>>> the Book with the appropriate id would be good in a custom Action >>>>>>>>>>> "bean" >>>>>>>>>>> (correct me if I'm wrong) and I don't want to complicate this >>>>>>>>>>> sample >>>>>>>>>>> with >>>>>>>>>>> that too. >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> expression="cart.addItem(catalogService.getBookById(requestParameters.selectedBookId))"> >>>>>>>>>>> </evaluate> >>>>>>>>>>> </transition> >>>>>>>>>>> </global-transitions> >>>>>>>>>>> </flow> >>>>>>>>>>> >>>>>>>>>>> When I click on the "Add to cart" button the post request will be >>>>>>>>>>> something >>>>>>>>>>> like this: >>>>>>>>>>> >>>>>>>>>>> _noJavaScript false >>>>>>>>>>> j_id5 >>>>>>>>>>> j_id17:rangeStart 0 >>>>>>>>>>> javax.faces.ViewState H4sIAAAAAAAAA...... >>>>>>>>>>> org.apache.myfaces.trinidad.faces.FORM mainForm >>>>>>>>>>> *selectedBookId 1 >>>>>>>>>>> selectedBookId 2 >>>>>>>>>>> selectedBookId 3 >>>>>>>>>>> selectedBookId 4 * >>>>>>>>>>> source j_id31:0:j_id37:j_id38 >>>>>>>>>>> state >>>>>>>>>>> value >>>>>>>>>>> >>>>>>>>>>> As it seems it's send a "String array" of selectedBookId . I'd >>>>>>>>>>> like >>>>>>>>>>> to >>>>>>>>>>> send >>>>>>>>>>> just the appropriate id of course. How could I reach that? On top >>>>>>>>>>> of >>>>>>>>>>> this >>>>>>>>>>> I'd like to make more rows dynamically. You know 4 books in the >>>>>>>>>>> first >>>>>>>>>>> row >>>>>>>>>>> than another 4 one etc, but I don't know how to write the repeat >>>>>>>>>>> code >>>>>>>>>>> to >>>>>>>>>>> make this. Although, the main problem is the first one. >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>> Thank you for your reply. I'm afraid you have misunderstood me. I'd >>>>>>>>> like >>>>>>>>> to >>>>>>>>> create something you can see on amazon. There are book's pictures 3 >>>>>>>>> in >>>>>>>>> a >>>>>>>>> row, you can click on them to see details. I'd like to make a >>>>>>>>> category >>>>>>>>> panel >>>>>>>>> and cart panel you can see on that portal, but it's maybe an other >>>>>>>>> topic. >>>>>>>>> If I can reach that look easily with tr:table I'll use that for >>>>>>>>> this, >>>>>>>>> but >>>>>>>>> I >>>>>>>>> think the problem will come out again in an other scenario. Namely >>>>>>>>> how >>>>>>>>> to >>>>>>>>> send parameters with tr:commandButton. I think a hidden input filed >>>>>>>>> would >>>>>>>>> be >>>>>>>>> great for this, but in a separate form or something. Of course with >>>>>>>>> an >>>>>>>>> action listener in a backing bean all of my problems would fly >>>>>>>>> away, >>>>>>>>> but >>>>>>>>> what is the purpose of SWF than? >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>>> >>>>> >>>> >>>> >>>> >>> >>> >>> >> >> > >
