Strange EL problem
I've got two places on a page where I iterate lists of object. For each object I output a button that allows them(in this case) to add a user and role to a domain object(in this case, a research study-I work for a university). While in both cases the datatable is populated, in the first instance when the aj4 buttons are clicked the backing actions are not called. I don't know why.
This is the nonworking instance. It displays the output of a user search. In summary, what it does is iterate through a list of members returned by the 'userHome' object. Then, in the 3rd column, I obtain a list of all possible roles and iterate over them, displaying the appropriate buttons tied to the appropriate methods.
<rich:dataTable id="memberSelectList" value="#{userHome.findByNameOrInternetID(memberSearchName).toArray()}" var="possibleMember" rendered="#{memberSearchName.trim().length() gt 0}" rowKey="#{possibleMember.umnDID}" rowKeyVar="umnDID">
<rich:column>
<f:facet name="header">Name</f:facet>
#{possibleMember.name}
</rich:column>
<rich:column>
<f:facet name="header">User Name</f:facet>
#{possibleMember.userName}
</rich:column>
<rich:column>
<f:facet name="header">Add to List of Study Members</f:facet>
<a4j:repeat value="#{studyRoleHome.getAllRoles()}" var="role" >
possibleMember: #{possibleMember.class} role: ${role.class}
<a4j:commandButton type="submit" value="Add as #{role.name}" reRender="memberGrid" rendered="#{!viewStudyAction.study.containsMember(possibleMember,role)}" action="#{viewStudyAction.study.addMember(possibleMember,role)}" ajaxSingle="true" />
<a4j:commandButton type="submit" value="Remove as #{role.name}"
reRender="memberGrid" rendered="#{viewStudyAction.study.containsMember(possibleMember,role) and not viewStudyAction.isRoleAndUser(user, possibleMember, role, administrativeRole) }"
action="#{viewStudyAction.removeMember(possibleMember,role)}" ajaxSingle="true" />
<a4j:commandButton type="submit" value="Remove as #{role.name}" reRender="memberGrid" rendered="#{viewStudyAction.isRoleAndUser(user, possibleMember, role, administrativeRole) and not viewStudyAction.confirmRemoveSelfAsAdmin}" action="#{viewStudyAction.setConfirmRemoveSelfAsAdmin(true)}" ajaxSingle="true" />
<a4j:commandButton type="submit" value="Remove Yourself as #{role.name}. This cannot be undone." reRender="bodyPanel" rendered="#{viewStudyAction.isRoleAndUser(user, possibleMember, role, administrativeRole) and viewStudyAction.confirmRemoveSelfAsAdmin}" action="#{viewStudyAction.removeMember(possibleMember,role)}" ajaxSingle="true" />
</a4j:repeat>
</rich:column>
</rich:dataTable>
This is the working list-it displays a list of current users. It obtains it's array/list of user and roles directly from the Study object, then iterates over them. For each returned user it also iterates over the list of roles.
<rich:dataTable id="memberList" value="#{viewStudyAction.study.getUserAndRole().toArray()}" var="userAndRole" rowKey="#{userAndRole.user.umnDID}" rowKeyVar="umnDID" >
<rich:column>
<f:facet name="header">Name</f:facet>
#{userAndRole.user.name}
</rich:column>
<rich:column>
<f:facet name="header">User Name</f:facet>
#{userAndRole.user.userName}
</rich:column>
<rich:column>
<f:facet name="header">Add or Remove Users from the list of Study Members</f:facet>
<a4j:repeat value="#{studyRoleHome.getAllRoles()}" var="role" rendered="#{studyRoleHome.containsRole(viewStudyAction.study.userAndRole, user, administrativeRole)}" >
userAndRole.user: #{userAndRole.user.class} role: #{role.class}
<a4j:commandButton type="submit" value="Add as #{role.name}" reRender="memberGrid" rendered="#{!viewStudyAction.study.containsMember(userAndRole.user,role)}" action="#{viewStudyAction.study.addMember(userAndRole.user,role)}" ajaxSingle="true" />
<a4j:commandButton type="submit" value="Remove as #{role.name}" reRender="memberGrid" rendered="#{viewStudyAction.study.containsMember(userAndRole.user,role) and not viewStudyAction.isRoleAndUser(user, userAndRole.user, role, administrativeRole) }" action="#{viewStudyAction.removeMember(userAndRole.user,role)}" ajaxSingle="true" />
<a4j:commandButton type="submit" value="Remove as #{role.name}" reRender="memberGrid" rendered="#{viewStudyAction.isRoleAndUser(user, userAndRole.user, role, administrativeRole) and not viewStudyAction.confirmRemoveSelfAsAdmin}" action="#{viewStudyAction.setConfirmRemoveSelfAsAdmin(true)}" ajaxSingle="true" />
<a4j:commandButton type="submit" value="Remove Yourself as #{role.name}. This cannot be undone." reRender="bodyPanel" rendered="#{viewStudyAction.isRoleAndUser(user, userAndRole.user, role, administrativeRole) and viewStudyAction.confirmRemoveSelfAsAdmin}" action="#{viewStudyAction.removeMember(userAndRole.user,role)}" ajaxSingle="true" />
</a4j:repeat>
</rich:column>
</rich:dataTable>
Any opinion would be welcome. This problem has stumped me for more than a couple of days.
Mike Kohout