0

在下面的这段代码中，我有一个学生表，当我想更新时，我将从 coursesubject 表中选择一个下拉 course_code，它应该显示来自 coursesubject 的相应 subject_code。但我的实际结果是它在 coursecode 和主题代码中显示来自 coursesubject 的所有值。请任何人帮助我。

查看：student_detail_view

<section id="tables">
<script>
 jQuery(document).ready(function() {
  oTable = jQuery('#studenttable').dataTable({
   "bJQueryUI": true,
   "sPaginationType": "full_numbers"

  });
   }); 
  </script> 
  <script type="text/javascript" charset="utf-8">
 function get_studentdetails() {

    var exam_name = jQuery('#exam_name_id').val();
    //alert("exam_name"+exam_name);
    jQuery.ajax({
        data: {
            exam_name: exam_name,
        },
        type: 'POST',
        url: 'student_site/studentupdate',          
        success: function(data){
        //alert("inside change");
            console.log(data);
            jQuery('#details').html(data);
            jquery('#deleting').html(data);
        }
    });
    jQuery(document).ready(function(){
    jQuery.ajax({
        data: {
            exam_name: exam_name,
        },
        type: 'POST',
        url: 'student_site/studentcreate',
        success: function(data){
        //alert("inside change");
            console.log(data);
            jQuery('#crud').html(data);
            jquery('#deleting').html(data);
        }
    }); 
    });
}     

function CheckBoxVerification(From)
{
alert('hai');
    alert('hai:' $("table input[type=checkbox]:checked").length);
    if(From == "Insert")
    {
        if(!!$('#rowInsert input:checked').length == false)
        {
            alert('please select at least one check box to Create ...!');
        }
    }

    if(From == "Update")
    {
        if(!!$('#rowUpdate input:checked').length == false)
        {
            alert('please select at least one check box to Update ...!');
        }
    }
}
  function get_subjectdetails() {
    //var index = jQuery('#index').val();

    var course_name = jQuery('#course_name_id').val();
    //alert("course_name"+course_name);
    var exam_name = jQuery('#course_name_id>option:selected').text();
    var exam_name = jQuery('#exam_name_id').val();
    var ssubject_code = jQuery('#ssubject_code_id').val();
    //var partsArray = exam_name.split('.');
    //alert("ssubject_code"+ssubject_code);
    //alert("course_name"+course_name);
    //alert("exam_name"+exam_name);
    jQuery.ajax({
        data: 'exam_name='+exam_name+'&course_name=' + course_name,
        type: 'POST',
        url: 'student_site/subject_records',
        success: function(data){
        //alert("inside change");
            console.log(data);
            //alert ("data"+data);
            //for(var j = course_name; j < ssubject_code; j++)
        //{
            jQuery('#ssubject_code').empty().append(data);
        //}
        }

    });
} 

</script>

<?php 
    $attributes=array(
        'name'=>'updatecustomer',
        'id'=>'updatecustomer'
        );
    echo form_open('student_site/manage_student',$attributes);
?>
<div id="validation_failed">
    <?php
        echo validation_errors();
    ?>
    <?php $data = array();
        foreach ($course_records as $row)
        {
            $data[$row->course_code] = $row->course_code; 
        } 

        $subject_data = array();
        foreach ($all_coursesubject_records as $row)
        {
            $subject_data[$row->subject_code] = $row->subject_code; 
        }  


     ?>
     <div id="Processy">
<table class="display table table-bordered table-striped" id='studenttable'>
<thead>
<tr font style='font-size:13px'>
<th>&nbsp;</th>
<th>&nbsp;</th>
<th>Register Number</th>
<th>Name </th>
<th>Course Code</th>
<th>Subject Code</th>
</tr></thead>
<?php if(isset($records)) : foreach($records as $row) : ?>
<tr >
<td>
<?php echo anchor('student_site/delete/'.$row->id, 'Delete',array('onClick'=>"return confirm('Are you sure want to delete..?')")); ?>
</td>
<td id="rowUpdate">
<input type=checkbox name="editstudent[]" id="editstudent[]" value="<?php echo $row->id ?>">
</td>
<td ><input class="inputmedium span2" type="text" name="register_number_<?php echo $row->id ?>" id="register_number_<?php echo $row->id ?>" value="<?php echo $row->register_number; ?>" ></td>
<td ><input class="inputmedium span2" type="text" name="name_<?php echo $row->id ?>" id="name_<?php echo $row->id ?>" value="<?php echo $row->name; ?>" ></td>

<td >
<?php 

        $js = 'class="dropdown_class" id="course_code_id'.$row->id.'" onChange="get_subjectdetails()" '; 
        $js_name = 'course_code_id'.$row->id;
        echo form_dropdown($js_name, $data, $row->course_code, $js);
?>
</td>
<td>    
<?php 

        $js = 'class="dropdown_class" id="subject_code_id'.$row->id.'"'; 
        $js_name = 'subject_code_id'.$row->id;
        echo form_dropdown($js_name, $subject_data, $row->subject_code, $js);

?>
<div id="ssubject_code" ></div>
<input type="hidden" name="ssubject_code" id="ssubject_code" value="ssubject_code"/>
</td>

</tr>
<?php endforeach; ?>
</table>
</div>
<center>
<br /><input type="submit" class="btn-success btn" value="Update Student"></center>

<?php else : ?>
<h2>No records were returned.</h2>
<?php endif; ?>
4

1 回答 1

0

那是因为你正在加载你的主题和课程，如果你想在选择课程之后加载你的主题，你可以做的就是将你的主题放入这样的 div（或 tbody）标签中

<div class="subject"></div>

在你的jQuery中：

    $("#course_code_id").live("change keypress",function(){
    var id = 0;
    id = $(this).val();
    if( $(this).val() !==''){           
        $.post('<?php echo site_url('subject/search_by_course') ?>',
            {
                subject_id: id
            },function(data){
                $(".subject").html( data['html_string']);

            },"JSON"
        );

   }
});

在你的控制器中

function search_by_course()
{
  $this->load->model('subject_model');
  $id = $this->input->post('subject_id');

  //get your data from model
  $res_subject = $this->subject_model->subject_list($id);
  $html_string = "";
  $html_string .= "<select id='subject_code_id'>";
  for($x=0;$x<count($res_subject);$x++)
  {
     $html .= "<option id=".$res_subject[$x]->subject_id.">".$res_subject[$x]->subject_name."</option>";
  }
  $html_string .= "</select>";

  echo json_encode(array('html_string'=>$html_string));
}

通常，我这样做，到目前为止它有效。

于 2013-09-04T04:30:30.540 回答