Php 使用codeigniter从查看页面调用控制器的不同方法

我正在从事codeigniter项目，其中viwe页面有文本框，单选按钮和按钮。我从数据库获取文本框值，手动输入“从日期”和“到日期”，然后单击“保存”按钮“插入查询”获取空值，因为在控制器中，我在“索引”函数中连续调用了所有函数。在“查看”页面的每个事件上调用控制器方法的最佳解决方案是什么

离开\u appl\u view.php

<form action="leave_apply_control/index" method="post" id="myForm">
    <div class="row">
        <div class="col-md-3">
            <div class="form-group label-floating">
                <label class="control-label">Emp ID</label>
                <?php if(!empty($emp_leave)) 
                { 
                    foreach ($emp_leave as $liv)
                    { ?>   
                        <input type="text" class="form-control" name="id" value="<?php echo $liv->employee_id ?>" >                        
            </div>
        </div>
        <div class="col-md-4">
            <div class="form-group label-floating">
                <label class="control-label">Employee Name</label>              
                <input type="text" class="form-control" name="empname" id="empname" value="<?php echo $liv->employee_name ?>" >
            </div>
        </div>  
        <div class="col-md-4">
            <div class="form-group label-floating">
                <label class="control-label">Email address</label>
                <input type="email" class="form-control" name="empmail" id="empmail" value="<?php echo $liv->email ?>" >
            </div>
        </div>
    </div>
    <div class="row">
        <div class="col-md-4">
            <div class="form-group label-floating">
                <label class="control-label">Leave type: </label>
                <input type="radio"  id="half" name="type" onclick="Checkradiobutton()" value="half"> Half Day
                <input type="radio"  id="full" name="type" onclick="Checkbutton()" value="full" Checked> Full Day
            </div>
        </div>                                              
        <div class="col-md-3">
            <div class="form-group label-floating" id="frm_dt">
                <label class="control-label">From Date: </label>
                <input type="text" class="form-control" id="datepicker1" name="from"  ></p>
            </div>
        </div>
        <div class="col-md-3">
            <div class="form-group label-floating" id="to_dt">
                <label class="control-label">To Date: </label>
                <input type="text" class="form-control" id="datepicker2" name="to" ></p>
            </div>
        </div>      
    </div>                                                  
    <div class="row">
        <div class="col-md-3">                                                                      
            <div class="form-group label-floating">
                <label class="control-label">Balance Leaves</label>                                                 
                <input type="text" class="form-control" name="bal_leave" value="<?php echo $liv->balanced_leaves ?>" >
            </div>
<?php } 
}
?>
        </div>
        <div class="col-md-3">
            <div class="form-group label-floating">
                <label class="control-label">Applied Leaves</label>
                <input type="text" class="form-control" name="totaldays" id="totaldays" readonly>                                               
            </div>
        </div>
        <div class="col-md-3">
            <div class="form-group label-floating">
                <label class="control-label">Applied Date</label>
                <input type="text" class="form-control" name="todayDate" id="todayDate" value="<?php echo date("d/m/Y"); ?>" readonly>
            </div>
        </div>
    </div>                                              
    <div class="row">                                                                              
        <div class="col-md-7">
            <div class="form-group label-floating">
                <label class="control-label">Reason </label>
                <TEXTAREA class="form-control" id="reason" name="reason"> </TEXTAREA>
            </div>
        </div>
    </div>
    <button type="submit" class="btn btn-primary" id="submit" name="submit" onclick="<?php // echo base_url() ?>leave_apply_control/save_data">Apply</button> 
    <button type="reset" class="btn btn-primary" onclick="<?php echo base_url();?>leave_apply_control" >Reset</button>
</form>

Emp ID
首先参考文档，您找到问题的答案了吗。如果我还没有准备好帮你解决…不，我的查询是save_data（）函数不例外。如果我将保存数据代码合并到index（）方法中，那么$data2['emp_leave']将为空。
<?php
class leave_apply_control extends CI_Controller
{
    public function __construct()
    {
        parent::__construct();
        $this->load->helper(array('form','url'));
        $this->load->library(array('session', 'form_validation'));
        $this->load->library('calendar');
        $this->load->database();
        $this->load->model('user_model');
        $this->load->helper('date');           
    }//contruct close

    function index()
    {      
        $id=$this->session->userdata('id');
        $data['foren_id'] = $this -> user_model -> get_emp_id($id);    
        foreach($data['foren_id'] as $fk)
        {           
            //echo "////control page fk is   ".$fk->emp_id;
        }               
        $data2['emp_leave'] = $this->user_model->get_leave_count($fk->emp_id);                              
        $this->load->view('leave_application',$data2);  
        $this->save_data();
    }

    public function save_data()
    {
        $fd = date('Y-m-d',strtotime($this->input->post('from')));
        $td = date('Y-m-d',strtotime($this->input->post('to')));
        $data = array(
            'employee_id' => $this->input->post('id'),
            'emp_name' => $this->input->post('empname'),
            'leave_from' => $fd,
            'leave_to' => $td,
            'no_of_days' => $this->input->post('totaldays'),
            'applied_date' => date('Y-m-d H:i:s'),
            'reason' => $this->input->post('reason'),
            'mail' => $this->input->post('empmail'),
            'leave_type' => $this->input->post('type'),
            'balance_leaves' => $this->input->post('bal_leave'),
            'status' => 1,
        );              
        $this->user_model->insert_leave($data);                     
    }
}