'Display value of selected element of p:selectOneMenu and edit it
i am trying to select an object from a select many menu, which displays the available objects just fine. Then, when i select the one i am interested in, i wish to pass it to my backing bean to display its values in knobs and edit those knobs to change values. Neither works. Here is my xhtml code:
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3c.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:ng="http://xmlns.jcp.org/jsf/passthrough"
xmlns:p="http://primefaces.org/ui" xmlns:o="http://omnifaces.org/ui"
template="/WEB-INF/templates/main.xhtml">
<ui:define name="content">
<h:head>
</h:head>
<h:form id="limitForm">
<style type="text/css">
.ui-selectonemenu{width: 120% !important;}
.ui-selectonemenu-label{width: 120% !important;}
</style>
<p:panel header="Threshold Configuration">
<h:panelGrid columns="2" cellpadding="5">
<p:outputLabel for="room" value="Room:" />
<p:selectOneMenu id="room" value="#{selectOneRoomBean.room}" style="width:150px">
<f:selectItem itemLabel="Select Room" itemValue=""></f:selectItem>
<f:selectItems value="#{selectOneRoomBean.rooms}" var="room" itemLabel="#{room}" itemValue="#{room}"></f:selectItems>
<p:ajax event="change" update=":limitForm" listener="#{selectOneRoomBean.room}"></p:ajax>
</p:selectOneMenu>
<h:outputText value="Test:"/>
<h:outputText value="#{selectOneRoomBean.room}"/>
</h:panelGrid>
</p:panel>
<p:panel id="limitPanel" widgetVar="limitPanel">
<h1 style="font-weight:normal">Limits
</h1>
<div class="p-field p-col-12 p-md-4">
<h5 style="margin-top:0">Temperature</h5>
<p:knob value="#{selectOneRoomBean.room.temperature}" labelTemplate="{value}°C" foregroundColor="red"> </p:knob>
</div>
<div class="p-field p-col-12 p-md-4">
<h5 style="margin-top:0">Humidity</h5>
<p:knob value="#{selectOneRoomBean.room.humidity}" labelTemplate="{value}%" foregroundColor="blue"> </p:knob>
</div>
<div class="p-field p-col-12 p-md-4">
<h5 style="margin-top:0">Airquality</h5>
<p:knob value="#{selectOneRoomBean.room.airquality}" max="5" foregroundColor="purple"> </p:knob>
</div>
<div class="p-field p-col-12 p-md-4">
<h5 style="margin-top:0">Volume</h5>
<p:knob value="#{selectOneRoomBean.room.volume}" foregroundColor="green"> </p:knob>
</div>
<div class="p-field p-col-12 p-md-4">
<h5 style="margin-top:0">Brightness</h5>
<p:knob value="#{selectOneRoomBean.room.brightness}" foregroundColor="orange"> </p:knob>
</div>
</p:panel>
</h:form>
</ui:define>
</ui:composition>
and here is my backing bean
package at.qe.skeleton.ui.beans;
import at.qe.skeleton.model.Room;
import at.qe.skeleton.services.RoomService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
import javax.inject.Inject;
import java.util.Collection;
@Component
@Scope("view")
public class SelectOneRoomBean {
@Autowired
private RoomService roomService;
private Room room;
public Collection<Room> getRooms() {
return roomService.getAllRooms();}
public void setRoom(Room room) {
this.room = room;
doReloadRoom();
}
public void doReloadRoom() {
room = roomService.loadRoom(room.getRoomID());
}
public Room getRoom() {
return room;
}
}
Not sure if it matters, but this is my Room object:
package at.qe.skeleton.model;
import at.qe.skeleton.model.sensor.SensorDataType;
import org.springframework.data.domain.Persistable;
import javax.persistence.*;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**Room is an Entity modeling an existing Room in an office, storing its associated sensors, the department it
* belongs to, the type of room as well as a fixedOccupancy boolean
*/
@Entity
@Table(name = "room")
public class Room implements Serializable, Persistable<Long> {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id")
private long roomID = 0;
private Boolean fixedOccupancy;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "department_id")
private Department department;
@OneToMany(cascade = CascadeType.ALL, orphanRemoval = true, mappedBy = "room")
private List<Employee> employees = new ArrayList<>();
@Enumerated(EnumType.STRING)
private RoomType roomType;
@ElementCollection
@MapKeyEnumerated(EnumType.STRING)
private Map<SensorDataType, Long> limits = new HashMap<SensorDataType, Long>();
public void setRoomID(long roomID) {
this.roomID = roomID;
}
public Boolean getFixedOccupancy() {
return fixedOccupancy;
}
public void setFixedOccupancy(Boolean fixedOccupancy) {
this.fixedOccupancy = fixedOccupancy;
}
public Department getDepartment() {
return department;
}
public void setDepartment(Department department) {
this.department = department;
}
public List<Employee> getEmployees() {
return employees;
}
public void setEmployees(List<Employee> employees) {
this.employees = employees;
}
public RoomType getRoomType() {
return roomType;
}
public void setRoomType(RoomType roomType) {
this.roomType = roomType;
}
public Map<SensorDataType, Long> getLimits() {
return limits;
}
public void setLimits(Map<SensorDataType, Long> limits) {
this.limits = limits;
}
public Long getTemperature() {
return limits.get(SensorDataType.TEMPERATURE);
}
public void setTemperature(Long value) {this.limits.put(SensorDataType.TEMPERATURE, value);}
public Long getHumidity() {
return limits.get(SensorDataType.HUMIDITY);
}
public void setHumidity(Long value) {this.limits.put(SensorDataType.HUMIDITY, value);}
public Long getAirquality() {
return limits.get(SensorDataType.AIRQUALITY);
}
public void setAirquality(Long value) {this.limits.put(SensorDataType.AIRQUALITY, value);}
public Long getVolume() {
return limits.get(SensorDataType.VOLUME);
}
public void setVolume(Long value) {this.limits.put(SensorDataType.VOLUME, value);}
public Long getBrightness() {
return limits.get(SensorDataType.BRIGHTNESS);
}
public void setBrightness(Long value) {this.limits.put(SensorDataType.BRIGHTNESS, value);}
public long getRoomID() {
return roomID;
}
@Override
public Long getId() {
return this.roomID;
}
@Override
public boolean isNew() {
return (this.roomID == 0);
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Room room = (Room) o;
return getId().equals(room.getId());
}
@Override
public String toString() {
return roomType + " ID: " + roomID;
}
}
Any help is greatly appreciated. I am somewhat of a noobie when it comes to java and this is my first ever posting here, so apologies for any mistakes.
Sources
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Source: Stack Overflow
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