我目前正在学习本教程https://www.tutorialspoint.com/codeigniter/working_with_database.htm
在这些步骤之前，我不能将记录添加到数据库中，我对Codeigniter很陌生。
螺柱控制器.php
<?php
class Stud_controller extends CI_Controller {
function __construct() {
parent::__construct();
$this->load->helper('url');
$this->load->database();
}
public function index() {
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->helper('url');
$this->load->view('Stud_view',$data);
}
public function add_student_view() {
$this->load->helper('form');
$this->load->view('Stud_add');
}
public function add_student() {
$this->load->model('Stud_Model');
$data = array(
'roll_no' => $this->input->post('roll_no'),
'name' => $this->input->post('name')
);
$this->Stud_Model->insert($data);
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->view('Stud_view',$data);
}
public function update_student_view() {
$this->load->helper('form');
$roll_no = $this->uri->segment('3');
$query = $this->db->get_where("stud",array("roll_no"=>$roll_no));
$data['records'] = $query->result();
$data['old_roll_no'] = $roll_no;
$this->load->view('Stud_edit',$data);
}
public function update_student(){
$this->load->model('Stud_Model');
$data = array(
'roll_no' => $this->input->post('roll_no'),
'name' => $this->input->post('name')
);
$old_roll_no = $this->input->post('old_roll_no');
$this->Stud_Model->update($data,$old_roll_no);
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->view('Stud_view',$data);
}
public function delete_student() {
$this->load->model('Stud_Model');
$roll_no = $this->uri->segment('3');
$this->Stud_Model->delete($roll_no);
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->view('Stud_view',$data);
}
}
?>
螺柱模型.php
<?php
class Stud_Model extends CI_Model {
function __construct() {
parent::__construct();
}
public function insert($data) {
if ($this->db->insert("stud", $data)) {
return true;
}
}
public function delete($roll_no) {
if ($this->db->delete("stud", "roll_no = ".$roll_no)) {
return true;
}
}
public function update($data,$old_roll_no) {
$this->db->set($data);
$this->db->where("roll_no", $old_roll_no);
$this->db->update("stud", $data);
}
}
?>
Student_add.php（视图）
<!DOCTYPE html>
<html lang = "en">
<head>
<meta charset = "utf-8">
<title>Students Example</title>
</head>
<body>
<form method = "" action = "">
<?php
echo form_open('Stud_controller/add_student');
echo form_label('Roll No.');
echo form_input(array('id'=>'roll_no','name'=>'roll_no'));
echo "<br/>";
echo form_label('Name');
echo form_input(array('id'=>'name','name'=>'name'));
echo "<br/>";
echo form_submit(array('id'=>'submit','value'=>'Add'));
echo form_close();
?>
</form>
</body>
</html>
我认为没有路由问题，因为删除功能正在工作。
最佳答案
第一件事：看在上帝的份上，不要加载你创建的每个函数。改用construct。
Check CI Controller pattern too，不需要控制器名称，这样您的路由将非常难看。
我把你也需要注意的地方改了。
<?php
class Stud extends CI_Controller {
function __construct() {
parent::__construct();
$this->load->helper('url', 'form'); //prefer to put the basics helpers on autoload in config dir, you will use basically in all your project
$this->load->database(); //you don't need that, just check your confs
$this->load->model('stud_model'); //check the needs of this model too. If it's too basic, put on autoload
}
public function index() {
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->helper('url');
$this->load->view('Stud_view',$data);
}
public function add_student_view() {
$this->load->view('Stud_add');
}
public function add_student() {
$data = array(
'roll_no' => $this->input->post('roll_no'),
'name' => $this->input->post('name')
);
$this->stud_model->insert($data); //avoid camelcase and stuff into model object call
//dont use db access inside controller, this behavior is from model, create a Get function there
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->view('Stud_view',$data);
}
public function update_student_view() {
$roll_no = $this->uri->segment('3');
//dont use db access inside controller, this behavior is from model, create a Get function there
$query = $this->db->get_where("stud",array("roll_no"=>$roll_no));
$data['records'] = $query->result();
$data['old_roll_no'] = $roll_no;
$this->load->view('Stud_edit',$data);
}
public function update_student(){
$data = array(
'roll_no' => $this->input->post('roll_no'),
'name' => $this->input->post('name')
);
$old_roll_no = $this->input->post('old_roll_no');
$this->stud_Model->update($data,$old_roll_no);
//dont use db access inside controller, this behavior is from model, create a Get function there
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->view('Stud_view',$data);
}
public function delete_student() {
$roll_no = $this->uri->segment('3');
$this->stud_model->delete($roll_no);
//dont use db access inside controller, this behavior is from model, create a Get function there
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->view('Stud_view',$data);
}
}
?>
<?php
class Stud_Model extends CI_Model {
//create Get and Set functions with private variables
function __construct() {
parent::__construct();
}
public function insert($data) {
if ($this->db->insert("stud", $data)) {
return true;
}
//use try/catch, avoid only ifs with returns
}
public function delete($roll_no) {
if ($this->db->delete("stud", "roll_no = ".$roll_no)) {
return true;
}
//use try/catch, avoid only ifs with returns
}
public function update($data,$old_roll_no) {
$this->db->set($data);
$this->db->where("roll_no", $old_roll_no);
$this->db->update("stud", $data);
}
}
?>
<!DOCTYPE html>
<html lang = "en">
<head>
<meta charset = "utf-8">
<title>Students Example</title>
</head>
<body>
<?php
echo form_open('stud/add_student'); //check this route
echo form_label('Roll No.');
echo form_input(array('id'=>'roll_no','name'=>'roll_no'));
echo "<br/>";
echo form_label('Name');
echo form_input(array('id'=>'name','name'=>'name'));
echo "<br/>";
echo form_submit(array('id'=>'submit','value'=>'Add'));
echo form_close();
?>
</body>
</html>
关于php - Codeigniter:无法将记录添加到数据库，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/44103138/