为什么，当我为输入添加代码时，我的选择列表不起作用

如何解决为什么，当我为输入添加代码时，我的选择列表不起作用

我有自己的控制器和页面。共有三个对象：Doctor__c、Patient__c 和 Appointment__c。预约__c有医生和病人。

我的问题是：当我为 Appointment__c 的 VF 页面中的输入字段添加代码时，我以前的代码无法正常工作。 （我知道要删除部分代码。）

它应该是这样工作的：当我选择 Doctor - Work_Start_Hours 和 End hours 时，表格也应该显示该医生的行。但它不会随着输入字段刷新。

这是一个很大的代码，对不起，但这都是相关的。 这是一个控制器：

public class AppointmentTableController {

public List<Doctor__c> listofDoctors {get;set;}
public String doctorId {get;set;}
public List<Doctor__c> docHoursList {get;set;}

public List<Patient__c> patientList {get;set;}
public String patientId {get;set;}

public Apexpages.StandardSetController controller {get;set;}
public List<Appointment__c> appointmentList {get;set;}
public Appointment__c appointmentObject {get;set;}

public AppointmentTableController() {
    listofDoctors = [SELECT Id,Name From Doctor__c ORDER BY Name];
    doctorId = listofDoctors.isEmpty() == FALSE ? listofDoctors[0].Id : NULL;
    getDoctors();
    
    patientList = [SELECT Id,Name FROM Patient__c ];

    getAppointments();
    appointmentObject = new Appointment__c();
}

public List<SelectOption> getDoctoRSSelectOptionItems() {
    List<SelectOption> options = new List<SelectOption>();
     for(Doctor__c d: listofDoctors) {
        options.add(new SelectOption(d.Id,d.Name));
    }
    return options;
}


public void getDoctors() {
    docHoursList = [
        SELECT Id,Name,Working_Hours_Start__c,Working_Hours_End__c  From Doctor__c
        Where Id =: doctorId
    ];
}

public PageReference goToAddNewDoctor() {
    return new PageReference('https://vrpconsulting-1d5-dev-ed.lightning.force.com/lightning/o/Doctor__c' + 
                             '/new?count=1&nooverride=1&userecordtypeCheck=1&navigationLocation=LIST_VIEW&uid' + 
                             '=162489093371864736&backgroundContext=%2Flightning%2Fo%2FDoctor__c%2Flist%3FfilterName%3DRecent');
}

////////////////////////////////////////////////////////////////////////////////    Patient

public List<SelectOption> getPatientSelectOptionItems() {
    List<SelectOption> options = new List<SelectOption>();
     for(Patient__c p: patientList) {
        options.add(new SelectOption(p.Id,p.Name));
    }
    return options;
}

    public PageReference goToAddNewPatient() {
    return new PageReference('https://vrpconsulting-1d5-dev-ed.lightning.force.com/lightning/o/Patient__c' + 
                             '/new?count=1&nooverride=1&userecordtypeCheck=1&navigationLocation=LIST_VIEW&uid' + 
                             '=162490325260397268&backgroundContext=%2Flightning%2Fo%2FPatient__c%2Flist%3FfilterName%3DRecent');
}


////////////////////////////////////////////////////////////////////////////////        Appointment
    
        public void getAppointments() {
            List<Appointment__c> appList = [SELECT Id,Doctor__r.Name,Patient__r.Name,Appointment_Date__c,Duration_in_minutes__c
                                                    FROM Appointment__c
                                                    WHERE Doctor__r.Id =: doctorId];
            controller = new Apexpages.StandardSetController(appList);
            controller.setPageSize(20);
        appointmentList =  (List<Appointment__c>)controller.getRecords();
}

public void saveAppointment() {
    appointmentObject.Doctor__c = doctorId;
    appointmentObject.Patient__c = patientId;
    insert appointmentObject;
    appointmentObject = new Appointment__c();
}
 

}

这是一个页面：

<apex:page controller="AppointmentTableController">
<apex:form >    
    <apex:pageBlock title="Appointments Table">
    
    <apex:pageBlock id="Doctor">
        <apex:actionFunction action="{!getDoctors}" name="selectDoctors" rerender="DoctorsWorkHours"/>
        <apex:actionFunction action="{!getAppointments}" name="selectDoctorAppointments" rerender="AppointmentTable"/>
        
        Select a doctor 
        <apex:selectList size="1" value="{!doctorId}" onclick="selectDoctors();" onchange="selectDoctorAppointments();">
            <apex:selectOptions value="{!doctoRSSelectOptionItems}"/>
        </apex:selectList>
        
       <apex:dataList value="{!docHoursList}" var="docHours" id="DoctorsWorkHours">
            Working Hours Start &nbsp;<apex:outputField value="{!docHours.Working_Hours_Start__c}"/><br/>
            Working Hours End &nbsp;<apex:outputField value="{!docHours.Working_Hours_End__c}"/>
        </apex:dataList>        
        
        <apex:pageBlockButtons location="bottom">
            <apex:commandButton action="{! goToAddNewDoctor }" value="Add New Doctor" />
        </apex:pageBlockButtons> 
        
    </apex:pageBlock>
    
    <apex:pageBlock id="Patient"> 
        Select a patient 
        <apex:selectList size="1" value="{!patientId}">
            <apex:selectOptions value="{!patientSelectOptionItems}"/>
        </apex:selectList>
        
        <apex:pageBlockButtons location="bottom">
            <apex:commandButton action="{! goToAddNewPatient }" value="Add New Patient" />
        </apex:pageBlockButtons> 
    </apex:pageBlock>   
    
    <apex:pageBlock id="Appointment"> 
        
HERE THIS CODE

   <!--         <apex:pageBlockSection columns="1">
                <apex:inputField value="{! appointmentObject.Appointment_Date__c }"/>
                <apex:inputField value="{! appointmentObject.Duration_in_minutes__c }"/>
                <apex:commandButton action="{!saveAppointment}" value="Add New Appointment"/>
            </apex:pageBlockSection>        -->
        
        <apex:pageBlockSection columns="1" id="AppointmentTable">
            <apex:pageBlockTable value="{!appointmentList}" var="app">
                <apex:column headerValue="Action">

                </apex:column>
                <apex:column value="{!app.Doctor__r.Name}"/>
                <apex:column value="{!app.Patient__r.Name}"/>
                <apex:column value="{!app.Appointment_Date__c}"/>
                <apex:column value="{!app.Duration_in_minutes__c}"/>
            </apex:pageBlockTable>
            {!Controller.pageNumber} of {! ROUND(controller.resultsize / 5,0)}
        </apex:pageBlockSection>
        <apex:pageBlockButtons location="bottom">
            <apex:commandButton value="PrevIoUs" action="{!controller.prevIoUs}" rendered="{!controller.hasPrevIoUs}" />
            <apex:commandButton value="Next" action="{!controller.next}" rendered="{!controller.hasNext}" />
        </apex:pageBlockButtons>
    </apex:pageBlock>
    

 </apex:pageBlock>
  </apex:form>
    
</apex:page>

谢谢