1 Reply Latest reply on May 9, 2011 11:27 AM by Dmitriy Sukharev

    Passing parameters between pages

    Dmitriy Sukharev Newbie

      Hello,

      it must be very newbie question, but I'm completely stuck passing parameters from one page to another. There is a bean with request scope and in navigation rules I'm using redirect. As far as I understood it's bad not to use this <redirect />, but still I don't want to change scope of my beans. How can I pass them in this case?

       

      Now I have following:

      <?xml version="1.0" encoding="UTF-8"?>
      <faces-config version="2.0" ... >
          <navigation-rule>
              <from-view-id>/categories.xhtml</from-view-id>
              <navigation-case>
                  <from-outcome>Add Category</from-outcome>
                  <to-view-id>/category_edit.xhtml</to-view-id>
                  <redirect />
              </navigation-case>
      
              <navigation-case>
                  <from-outcome>Edit Category</from-outcome>
                  <to-view-id>/category_edit.xhtml</to-view-id>
                  <redirect />
              </navigation-case>
          </navigation-rule>
      
          ...
      
           <application>
              <el-resolver>org.springframework.web.jsf.el.SpringBeanFacesELResolver</el-resolver>
              <locale-config>
                  <default-locale>en</default-locale>
              </locale-config>
              <resource-bundle>
                  <base-name>messages</base-name>
                  <var>messages</var>
              </resource-bundle>
          </application>
      </faces-config>
      

       

      categories.xhtml:

      <html ...>
          <ui:composition template="WEB-INF/pages/template.xhtml">
              <ui:define name="body">
                  <f:view>
                      <h:form id="categoryForm">
                          <rich:extendedDataTable rowKeyVar="rkv" frozenColCount="1"
                              id="table" rows="40"
                              columnClasses="col" value="#{categoryController.all}"
                              var="item" sortMode="single">
      
                              <f:facet name="header">
                                  <b>Category List</b>
                              </f:facet>
      
                              <rich:column sortExpression="#{item.title}">
                                  <f:facet name="header">
                                      <b>Category</b>
                                  </f:facet>
                                  <h:outputText value="#{item.title}" />
                              </rich:column>
      
                              ...
      
                              <rich:column sortExpression="#{item.parent}">
                                  <f:facet name="header">
                                      <b>Parent</b>
                                  </f:facet>
                                  <h:outputText  value="#{item.parent}" />
                              </rich:column>
      
                              <rich:column sortExpression="#{item.id}">
                                  <f:facet name="header">
                                      <b>Actions</b>
                                  </f:facet>
      
                                  <a4j:commandLink value="Edit" action="Edit Category">
                                      <f:setPropertyActionListener value="#{item}" target="#{categoryController.category}" />
                                  </a4j:commandLink>
                                  <h:outputText value=" " />
      
                                  <a4j:commandLink value="Delete" action="#{categoryController.delete}" render="categoryForm">
                                      <f:setPropertyActionListener value="#{item}" target="#{categoryController.category}" />
                                  </a4j:commandLink>
      
                              </rich:column>
                          </rich:extendedDataTable>
                          <a4j:commandButton value="Add Category" action="Add Category"/>
                          </h:form>
                  </f:view>
      
              </ui:define>
          </ui:composition>
      
      </html>
      

       

      So when I press "Edit" appears ./category_edit.xhtml but with empty fields I don't know how to deal with this.

        • 1. Re: Passing parameters between pages
          Dmitriy Sukharev Newbie

          I solved my problem usign HTML GET method.

          <?xml version="1.0" encoding="UTF-8"?>
          <faces-config version="2.0" ...">
          
          <!-- CATEGORY -->
              <navigation-rule>
                  <from-view-id>/categories.xhtml</from-view-id>
                  ...
                  <navigation-case>
                      <from-outcome>Edit Category</from-outcome>
                          <to-view-id>/category_edit.xhtml</to-view-id>
                          <redirect include-view-params="true">
                              <view-param>
                              <name>id</name>
                              <value>#{categoryController.category.id}</value>
                              </view-param>
                          </redirect>
                  </navigation-case>
              </navigation-rule>
              ...
          </faces-config>
          

           

          category_edit.xhtml:

          <html ...>
          <f:metadata>
              <f:viewParam name="id" value="#{categoryController.category.id}"/>
          </f:metadata>
          
          <ui:composition template="WEB-INF/pages/template.xhtml">
              <ui:define name="body">
                  <h:form>
          ...
          </html>
          

           

          Also I had to rewrite some getters to obtain the whole object from database by it's id, but it was easy.