f:selectItems 中的值未在 bean 中设置

Question

我有一些从数据库填充的 p:selectOneMenu，我的意图是用户将在每个中选择一个值，提交，然后它将 go 发送到数据库。 从数据库中填充它们是可行的，但是除了一个之外，它们都没有将它们选择的值传递给数据库。

其中一个不起作用：

<p:selectOneMenu id="where" required="true" value="#{createStrip.newStrip.whereLocation}">
    <f:selectItem itemLabel="Select One" itemValue="#{null}" noSelectionOption="true" />
    <f:selectItems value="#{createStrip.whereList}" var="c" itemLabel="#{c.inspectionArea}" itemValue="#{c.inspectionArea}" />
</p:selectOneMenu>

这是一个有效的方法，也许你们可以看到区别，因为我看不到

<p:selectOneMenu id="model" required="true" value="#{createStrip.newStrip.model}">
    <f:selectItem itemLabel="Select One" itemValue="#{null}" noSelectionOption="true" />
    <f:selectItems value="#{createStrip.modelList}" var="c" itemLabel="#{c.modelNumber}" itemValue="#{c.modelNumber}" />
</p:selectOneMenu>

我的 ejb 中保存新记录的方法

public Strips saveNewStrip(Strips s) {
        s = em.merge(s);
        em.flush();
        return s;
    }

在我的 controller 中设置新的空白记录

//This variable is declared further up, but it's relevant here:
private Strips newStrip;
//
//This is the getter for the newStrip variable. It's set up this way so that I can use re-use my entry form as a view page.
public Strips getNewStrip() {
        if (newStrip == null) {
            if(selectedID != null) {
                newStrip = ejb.getStripById(selectedID);
                this.disabled = true;
            }else {
                newStrip = new Strips();
                newStrip.setOriginator(ul.getUser().getEmployeeName());
                newStrip.setOpenClosed("Open");
                newStrip.setDateCreated(todaysDate);
                this.disabled = false;
            }
        }
        return newStrip;
    }

表示表的实体，减去获取和设置

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(unique = true, nullable = false)
    private int stripId;
    @Column(length = 50, name = "Color")
    private String color;
    @Column(name = "Under40Hours")
    private boolean under40hours;
    @Column(length = 100, name = "Department")
    private String department;
    @Column(length = 75, name = "PIC")
    private String pIC;
    @Column(name = "DateCreated")
    private Date dateCreated;
    @Column(length = 75, name = "Originator")
    private String originator;
    @Column(length = 200, name = "Defect")
    private String defect;
    @Column(length = 100, name = "PartNumber")
    private String partNumber;
    @Column(length = 200, name = "NCM")
    private String nCM;
    @Column(length = 100, name = "WorkOrder")
    private String workOrder;
    @Column(length = 50, name = "Model")
    private String model;
    @Column(length = 100, name = "Who")
    private String who;
    @Column(length = 100, name = "WhereLocation")
    private String whereLocation;
    @Column(length = 30, name = "openClosed")
    private String openClosed;

如果您还有什么想看的，请告诉我。

我认为问题出在 xhtml 和 controller 之间，因为我可以在 controller 中设置一个值，它会出现在框中的页面上，当我提交时它会采用该值。

如果我所有的 selectOneMenu 都一样，为什么一个可以工作而 rest 不工作？