Liferay 7: hidden aui input won't set value based on parameter - liferay

Question

I have an entity with a primary key and two other fields.
I am able to display them in a Search Container in my primary View JSP, and I want to implement an edit/update function, so I created a different JSP for that. I pass the properties of the entity I wish to edit in portlet:renderURL portlet:param tags just like this:
<portlet:renderURL var="editEntity">
<portlet:param name="jspPage" value="/update-page.jsp" />
<portlet:param name="primaryKey" value="<%= entityId %>" />
<portlet:param name="name" value="<%= entityName%>" />
<portlet:param name="description" value="<%= entityDesc%>" />
</portlet:renderURL>
In the update-page JSP if I set any input field hidden, the parameter based values disappear, so the controller cannot process the fields' values.
i.e.:
<aui:input name="primaryKey" type="hidden" value="${primaryKey}" />
<aui:input name="primaryKey" type="hidden" value="${name}" />
<aui:input name="primaryKey" type="hidden" value="${description}" />
Note: I only want to hide the primary key field, the controller servlet should be able to process it and update my entity based on the primary key, like this:
<aui:input name="primaryKey" type="text" value="${name}" />
<aui:input name="primaryKey" type="text" value="${description}" />
The funny thing is, that everything just works when I set the input fields text type, but I wouldn't want the users to enter the primary key, duh...
Any ideas how could I fix this?

Answer 1

It's work for me
view.jsp
<%# include file="init.jsp" %>
<portlet:actionURL name="testURL" var="testURL" />
<aui:form name="fm" method="post" action="<%= testURL.toString()%>">
<aui:input name="primaryKey" type="hidden" value="123" />
<aui:button-row>
<aui:button name="submit" type="submit" value="OK" />
</aui:button-row>
</aui:form>
TestmvcportletPortlet.java
package com.example.portlet;
import com.liferay.portal.kernel.exception.SystemException;
import com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet;
import com.liferay.portal.kernel.util.ParamUtil;
import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.Portlet;
import javax.portlet.ProcessAction;
import org.osgi.service.component.annotations.Component;
#Component(
immediate = true,
property = {
"com.liferay.portlet.display-category=category.sample",
"com.liferay.portlet.instanceable=true",
"javax.portlet.display-name=Test Portlet",
"javax.portlet.init-param.template-path=/",
"javax.portlet.init-param.view-template=/view.jsp",
"javax.portlet.resource-bundle=content.Language",
"javax.portlet.security-role-ref=power-user,user"
},
service = Portlet.class
)
public class TestmvcportletPortlet extends MVCPortlet {
#ProcessAction(name = "testURL")
public void addBook(ActionRequest actionRequest,ActionResponse actionResponse) throws SystemException {
String a = ParamUtil.getString(actionRequest, "primaryKey");
System.out.println("Value is "+a);
}
}
have you found anything that you missed code?

Answer 2

I found a solution to the problem.
So, after long hours of testing I found out that I just could not get the values stored in parameters just as ${paramName} anywhere in a simple HTML tag, but I still don't know why.
What I did was request for the needed values stored within the parameters inside a JSP scriptlet just like this:
<%
String primaryKey = request.getParameter("primaryKey");
String name = request.getParameter("name");
String description = request.getParameter("description");
%>
Then I was good to go with my form:
<aui:form action="<%= updateAbbreviationURL %>" method="post">
<aui:input name="primaryKey" type="hidden" value="<%= primaryKey %>" />
<aui:input name="entityName" label="Name" type="text" value="<%= name %>" />
<aui:input name="entityDesc" label="Description" type="text" value="<%= description %>" />
<aui:button name="submit" value="submit" type="submit" />
<aui:button name="cancel" value="cancel" type="button" onClick="<%= viewURL %>" />
</aui:form>
I'd be really grateful if someone told me why my initial implementation didn't work, I mean referring to the parameter values as mentioned above, ${paramName}
Thanks in advance!