Question

在下面的代码中有2个文本框和2个下拉列表这是一个更新，当我从课程主题表中选择课程代码并在主题代码下拉列表中发布值并更新到mysql但是当我从下拉列表中选择课程代码时表格是我想的是填充主题代码中的值并更新为mysql。

控制器：Student_site

    function studentupdate()
    {   
        $data = array();
        $exam_name = $this->input->post('exam_name');
        $course_name = $this->input->post('course_name');
        if($query = $this->student_model->get_exam_data())
        {
            $data['exam_data'] = $query;
        }
        if($query = $this->student_model->get_records($exam_name))
        {
            $data['records'] = $query;
        }
                if($query = $this->student_model->get_course_code_records($exam_name))
        {
            $data['course_records'] = $query;
        }
        if($query = $this->student_model->get_all_coursesubject_records())
        {
            $data['all_coursesubject_records'] = $query;
        }
        $this->load->view('student_detail_view', $data);
    }

function manage_student()
    {
        $data['title']="Manage Student";
            //query model to get data results for form
            $data=array();
            if($query=$this->student_model->get_student_records()){
            $data['records']=$query;
            }
            $editstudent = $this->input->post('editstudent');
            if( $this->input->post('editstudent') != false ){
            foreach($editstudent as $row_id)
              {
                $this->form_validation->set_rules("register_number_" . $row_id, "register_number", "required|min_length[2]");
              }
            }
            if ($this->form_validation->run() == FALSE){
            $data["message"]="";

                //$this->load->view("master_data/view_master_data_header",$data);
                //$this->load->view("master_data/view_master_data_nav");
                $this->load->view("student_detail_view",$data);
                //$this->load->view("master_data/view_master_data_footer");

            } else {
                // single update - working
                if( $this->input->post('editstudent') != false )
                {
                    foreach ($editstudent as $row_id)
                    {
                        $data = array( 
                        'register_number' => $this->input->post('register_number_'.$row_id),
                        'name' => $this->input->post('name_'.$row_id),
                        'course_code' => $this->input->post('course_code_id'.$row_id),
                        'subject_code' => $this->input->post('subject_code_id'.$row_id),

                        );

                        $this->student_model->update_student_records( $row_id, $data );
                        redirect('student_site','refresh');
                    }
                    $this->session->set_flashdata('dbaction', 'Selected Records have been updated successfully');


                    }

            }
    }

模型：student_model

 function get_records($exam_name)
    {
        $this->db->where('exam_name',$exam_name);
        $query = $this->db->get('student_table');
        return $query->result();
    }

function get_course_code_records($course_name)
    {
        $query = $this->db->get('coursesubject');
        return $query->result();
    }

function get_all_coursesubject_records()
    {
        //echo "exam_name inside get_subject_records".$exam_name;
        $this->db->select('course_code');
        $this->db->select('subject_code');
        $query = $this->db->get('coursesubject');
        return $query->result();
    }   
function get_subject_records($exam_name,$course_name)
    {
        //echo "exam_name inside get_subject_records".$exam_name;
        //$this->db->select('course_code,subject_code');
        //$this->db->where('exam_name',$exam_name);
        $this->db->where('course_code',$course_name);
        $query = $this->db->get('coursesubject');
        return $query->result();
    }

视图：subject_detail_view：

<?php $data = array();
    if(isset($records)){
        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_subjectdetails112('.$row->id.')" '; 
        $js_name = 'course_code_id'.$row->id;
        echo form_dropdown($js_name, $data, $row->course_code, $js);
        echo"hai";
        var_dump ($row->course_code);
?>
<input type="hidden" name="index" id="index" value="<?php echo  $row->id; ?>"/>
</td>
<td>    
    <div id="subject_code_id<?php echo $row->id; ?>" ></div>
   <input type="hidden" name="subject_code_id" id="subject_code_id" value="subject_code_id<?php echo $row->id; ?>"/>
</td></tr>

视图：subject_update

<script type="text/javascript" charset="utf-8">

 function get_subjectdetails112(index) {
 alert ("enter firstMAIN");
    //var index = jQuery('#index').val();
    //alert("index"+index);
    var course_name = jQuery('#course_code_id'+index).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 subject_code = jQuery('#subject_code_id'+index).val();
    alert(subject_code);
    //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/studentupdate  ',
        success: function(data){
        //alert("inside change");
            console.log(data);
            //alert ("data"+data);
            //for(var j = course_name; j < ssubject_code; j++)
        //{
            jQuery('#subject_code_id'+index).empty().append(data);
        //}
        }

    });
} 
</script>

Answer 1

您正在引用字段subject_code_id_，但字段名称和ID没有后缀。

这一行

<input type="hidden" name="subject_code_id" id="subject_code_id" value="subject_code_id<?php echo $row->id; ?>"/>

应该像这样在字段id和名称

中包含索引

<input type="hidden" name="subject_code_id<?php echo $row->id; ?>" id="subject_code_id<?php echo $row->id; ?>" value="subject_code_id<?php echo $row->id; ?>"/>

在下拉列表中发布值并更新到mysql

1 个答案: