我真的需要你的想法和帮助这个称为取消功能。 然而，这个项目不是我的，所以很难跟踪代码加上它被用作codeigniter。
控制器（layout.php中）
function addprint($id){
$this->form_validation->set_rules('printer','printer','required|xss_clean');
$this->form_validation->set_rules('quality','quality','required|xss_clean');
$this->form_validation->set_rules('paper_size','paper_size','integer|required|xss_clean');
$this->form_validation->set_rules('quantity','quantity','integer|required|xss_clean');
$this->form_validation->set_rules('date_printed','date_printed','required|xss_clean');
if($_POST && $this->form_validation->run() == FALSE){
$data['errors'] = validation_errors();
$data['success'] = false;
$data['vrequests'] = $this->layout_model->get_requests_print($id);
$this->load->view('print_layout.php', $data);
}
else{
$data['vrequests'] = $this->layout_model->get_requests_print($id);
$this->load->view('print_layout.php', $data);
}
}
function saveprint(){
$user_session = $this->session->all_userdata();
$data['username'] = $user_session['username'];
$data = array();
$this->form_validation->set_rules('printer','printer','required|xss_clean');
$this->form_validation->set_rules('quality','quality','required|xss_clean');
$this->form_validation->set_rules('paper_size','Paper Size','required|xss_clean');
$this->form_validation->set_rules('quantity','quantity','integer|required|xss_clean');
$this->form_validation->set_rules('date_printed','Date Printed','required|xss_clean');
$this->form_validation->set_rules('amount','amount','integer|xss_clean');
$this->form_validation->set_rules('tr_number','TR Number','integer|xss_clean');
$this->form_validation->set_rules('check_paid','Check Paid','integer|xss_clean');
if($this->form_validation->run() == FALSE)
{
//error if invalid
$data['errors'] = validation_errors();
$data['success'] = false;
$request_id = $this->input->post('id');
$this->addprint($request_id);
}
else
{
//valid data
$printer = $this->input->post('printer');
$quality = $this->input->post('quality');
$paper_size = $this->input->post('paper_size');
$request_id = $this->input->post('id');
$quantity = $this->input->post('quantity');
$date_printed = $this->input->post('date_printed');
$user_session = $this->session->all_userdata();
$is_paid = $this->input->post('check_paid');
if($is_paid == 1)
{
$amount = $this->input->post('amount');
$tr_amount = $this->input->post('tr_number');
}
else{
$amount = '';
$tr_amount = '' ;
}
$data = array(
'printer' => $printer,
'quality' => $quality,
'paper_size' => $paper_size,
'quantity' => $quantity,
'is_paid' => '1',
'request_id' => $request_id,
'date_printed' => $date_printed,
'user_id' => $user_session['id'],
'amount' => $amount,
'tr_number' => $tr_amount);
$data2 = array(
'is_printed' => '1');
$this->layout_model->print_layout($data);
$this->layout_model->update_layout_request($request_id, $data2);
$this->index();
}
//$data['printer'] = $this->input->post('printer');
//$data['quality'] = $this->input->post('quality');
//$data['paper_size']= $this->input->post('paper_size');
//$data['quantity']= $this->input->post('quantity');
//$this->load->view('print_layout.php', $data);
}
模型（layout_model.php）
function print_layout( $data)
{
$this->db->insert('prints',$data);
return $this->db->affected_rows();
}
function update_layout_request($request_id ,$data2)
{
$this->db->where('id', $request_id);
$this->db->update('requests', $data2);
}
次（print_layout.php）
<?php //first form?>
<div class="paper">
<center>
<span style="color: green">
<?php
if(isset($success)){
if($success){
echo "Reservation Successful!";
}
else{
echo '<span style="color: red">'.$errors.'</span>';
}
}
?>
</span>
</center>
<h1>Add to Print :</h1>
<hr/>
<?php echo form_open('layout/saveprint'); ?>
<?php echo form_hidden('id',$vrequests->id);?>
<?php echo form_hidden('id',$vrequests->id);?>
<p>
<label>Printer:</label>
<select name="printer" id="printer">
<?php $printers = Printer::all(); ?>
<?php foreach($printers as $printer):?>
<option value="<?=$printer->id?>"><?=$printer->printer_name?></option>
<?php endforeach;?>
</select>
</p>
<p>
<label>Quality:</label>
<select name="quality" id='quality'>
<option value="black">Black</option>
<option value="colored">Colored</option>
</select>
</p>
<p>
<label>Paper Size:</label>
<select name="paper_size" id="paper_size">
<?php $papers = Paper::all(); ?>
<?php foreach($papers as $paper):?>
<option value="<?=$paper->id?>"><?=$paper->paper_name?></option>
<?php endforeach;?>
</select>
</p>
<p>
<label>Quantity:</label>
<input type="text" name="quantity" id="quantity" />
</p>
<p>
<label >Date Printed:</label>
<input type="text" name="date_printed" id='date_needed' />
</p>
<p>
<label>Paid?:</label>
<input type="radio" name="check_paid" id="check_paid" value='1' /> YES
<input type="radio" name="check_paid" id="check_paid" value='0' /> NO
</p>
<p id='amount_hide' style="display:none" >
<label>Amount:</label>
<input type="text" name="amount" id="amount" />
</p>
<p id='tr' style="display:none">
<label>OR No.:</label>
<input type="text" name="tr_number" id="tr_number" />
</p>
<span class="response"></span>
</p>
<p>
<div class="inline">
<span style="padding: 9px;"><input type="submit" value="Print" /></span>
<a href="<?php echo base_url(); ?>index.php/layout/index" style="text-decoration:none;">
<input type="button" value="Cancel" class="button">
</a>
</div>
</p>
<?php echo form_close(); ?>
所以这次我想制作一个可以放到数据库的取消功能，可以在网站的桌子上查看。
提前谢谢。