好的，所以我到处寻找我的问题的解决方案，但到目前为止没有找到。我的代码看起来像这样。我创建了一个动态视图页面，其中动态加载编辑和添加视图。但问题出现时我试图在编辑期间保留选择下拉列表的价值。如果有人能帮助我，我将不胜感激。
查看
<div class="panel-body">
<div class="row">
<div class="col-lg-6">
<?php if(@$patient_info){
echo '<h1 class="page-header">Edit Patient</h1>';
}else{
echo '<h1 class="page-header">Add Patient</h1>';
}
?>
<?php if($this->session->flashdata('error')){ ?>
<div class="alert alert-danger"><?php echo $this->session->flashdata('error'); ?></div>
<?php } ?>
<?php if($this->session->flashdata('erroredit')){ ?>
<div class="alert alert-danger"><?php echo $this->session->flashdata('erroredit'); ?></div>
<?php } ?>
<?php //echo validation_errors('<div class="alert alert-danger">','</div>'); ?>
<form role="form" method="post" action="<?php echo isset($patient_info) ? site_url('home/patient/edit') .'/' .$patient_info->patientID : site_url('home/patient/new'); ?>">
<div class="form-group">
<?php echo form_error('pname', '<div class="alert alert-danger">', '</div>'); ?>
<label for="pname">Patient Name</label>
<input class="form-control" placeholder="Enter Patient Name" name="pname" value="<?php echo isset($patient_info) ? $patient_info->patientName : ''; ?>">
</div>
<!-- Dropdown menu for selecting clinic -->
<div class="form-group">
<label for="select">Select Clinic Name</label>
<select class="form-control" name="selectClinic">
<option value="none">Select Clinic Below</option>
<?php foreach($allclinic as $key=>$clinic){ ?>
<!--<?php //foreach($clinicByPatient as $clin): ?>-->
<option value="<?php $clinic->clinicID; ?>"
<?php if(isset($patient_info)){
echo 'selected="selected"';
}
?>
>
<?php echo $clinic->clinicName; ?>
</option>
<?php //endforeach; ?>
<?php } ?>
</select>
</div>
<!-- Select Clinic ends-->
<div class="form-group">
<label for="select">Select Dentist</label>
<select class="form-control" name="selectDentist">
<option value="">Select Dentist</option>
<?php foreach($dentistdet as $key=>$dentist){ ?>
<option value="<?php echo $did = $dentist->dentistID;?>"><?php echo $dentist->dentistName; ?></option>
<?php } ?>
</select>
</div>
<div class="form-group">
<input type="submit" class="btn btn-primary btn-lg btn-block" name="submit" value="<?php echo isset($patient_info) ? 'Update Patient' : 'Add Patient'; ?>" >
</div>
</form>
<div class="form-group">
<a href="<?php echo base_url() .'home/patient';?>" style="text-decoration:none;"><input type="submit" class="btn btn-danger btn-lg btn-block" value="Cancel"></a>
</div>
编辑控制器
public function edit(){
$id = $this->uri->segment(4);
$this->load->library('form_validation');
$this->load->model('clinic_model');
$this->load->model('dentist_model');
$data['patient_info'] = $this->patient_model->getPatientById($id);
$data['clinicByPatient'] = $this->patient_model->getPatientByClinic();
$data['allclinic'] = $this->clinic_model->getAllClinics();
// $data['clinicdet'] = $this->patient_model->getPatientByClinic();
if($_POST){
$this->form_validation->set_rules('pname', 'Patient Name', 'trim|required|xss_clean');
$this->form_validation->set_rules('paddress', 'Patient Address', 'trim|required|xss_clean');
$this->form_validation->set_rules('pcontact', 'Patient Contact', 'trim|required|xss_clean');
if($this->form_validation->run()== FALSE){
$data['subview'] = 'patient/patient_new';
$this->load->view('includes/layout', $data);
}else{
$patientname = $this->input->post('pname');
$patientaddress = $this->input->post('paddress');
$patientcontact = $this->input->post('pcontact');
$select = $this->input->post('selectClinic');
$option = $this->input->post('selectDentist');
$edited = $this->patient_model->editpatient($id, $patientname, $patientaddress, $patientcontact, $select, $option);
if($edited){
$this->session->set_flashdata('successedit', 'Successfully updated the record');
redirect('home/patient');
}
}
}else{
$data['subview'] = 'patient/patient_new';
$this->load->view('includes/layout',$data);
}
}
模型看起来像这样
<?php if( ! defined('BASEPATH')) exit('No direct script access allowed');
class Patient_model extends CI_Model{
public function countPatients(){
$countPatient = $this->db->count_all('patient');
return $countPatient;
}
public function getallpatients(){
$query = $this->db->get('patient');
if($query->num_rows()>0){
return $query->result();
}
else{
return FALSE;
}
}//getallpatients function ends
public function getPatientByClinic(){
$this->db->select('*');
$this->db->from('patient');
$this->db->join('clinic', 'patient.clinicID = clinic.clinicID', 'left');
$this->db->join('dentist', 'patient.dentistID = dentist.dentistID', 'left');
$query = $this->db->get();
if($query->num_rows>0){
return $query->result();
}
}
public function addPatientByClinic($patientname, $patientadd, $patientcontact, $select, $option){
$data = array(
'patientName' => $patientname,
'patientAddress' => $patientadd,
'patientContact' => $patientcontact,
'clinicID' => $select,
'dentistID' => $option
);
return $this->db->insert('patient',$data);
}// method ends
public function deletePatient($id){
$verifyID = array('patientID' => $id);
// $affRows = $this->db->affected_rows();
// $obj = new Patient_model;
if($verifyID){
$this->db->where($verifyID);
$this->db->delete('patient');
if($this->db->affected_rows()){
return TRUE;
}
}
}
public function editpatient($id, $patientname, $patientaddress, $patientcontact, $select, $option){
$data = array(
'patientName' => $patientname,
'patientAddress' => $patientaddress,
'patientContact' => $patientcontact,
'clinicID' => $select,
'dentistID' => $option
);
$query = $this->db->where('patientID', $id)
->update('patient', $data);
if($query){
return true;
}
}//method ends
public function getPatientById($id){
$query = $this->db->where('patientID', $id)
->get('patient');
return $query->row();
}
}//class ends
?>
答案 0 :(得分：-1)
在您的选择框的代码中，您实际上并没有回显$clinic->clinicID。因此，在提交表单时，该值将为空。
您还需要注意如何选择默认情况下选择哪个元素 - 您不会与在循环中发生变化的任何内容进行比较。你应该检查$clinic->clinicID吗？