CI框架(CodeIgniter)实现的数据库增删改查操作总结

本文实例讲述了CI框架(CodeIgniter)实现的数据库增删改查操作。分享给大家供大家参考，具体如下：

controllers下的 cquery.php文件

<?phpclass CQuery extends Controller {  //构造函数  function CQuery() {    parent::Controller();//   $this->load->database();  }  function index() {    //调用model 其中train为外层文件夹  MQuery为model名称 queryList为重命名    $this->load->model('train/MQuery','queryList');    //获得返回的结果集  这里确定调用model中的哪个方法    $result = $this->queryList->queryList();    //将结果集赋给res    $this->smarty->assign('res',$result);    //跳转到显示页面    $this->smarty->view('train/vquery.tpl');  }  //进入新增页面  function addPage() {    $this->smarty->view('train/addPage.tpl');  }  //新增  function add() {    //获得前台数据    //用户名    $memberName = $this->input->post('memberName');    //密码    $password = $this->input->post('password');    //真实姓名    $userRealName = $this->input->post('userRealName');    //性别    $sex = $this->input->post('sex');    //出生日期    $bornDay = $this->input->post('bornDay');    //e_mail    $eMail = $this->input->post('eMail');    //密码问题    $question = $this->input->post('question');    //密码答案    $answer = $this->input->post('answer');    //调用model    $this->load->model('train/MQuery','addRecord');    //向model中的addRecord传值    $result = $this->addRecord->addRecord($memberName,$password,$userRealName,$sex,$bornDay,$eMail,$question,$answer);    //判断返回的结果,如果返回true,则调用本页的index方法,不要写 $result == false 因为返回的值未必是false 也有可能是""    if ($result) {      $this->index();    } else {      echo "add failed.";    }  }  //删除  function deletePage() {    //获得ID    $deleteID = $this->uri->segment(4);    //调用model    $this->load->model('train/MQuery','delRecord');    //将值传入到model的delRecord方法中    $result = $this->delRecord->delRecord($deleteID);    //判断返回值    if ($result) {      $this->index();    } else {      echo "delect failed.";    }  }  //修改先查询  function changePage() {    $changeID = $this->uri->segment(4);    $this->load->model('train/MQuery','changeRecord');    $result = $this->changeRecord->changeRecord($changeID);    //将结果集赋给res    $this->smarty->assign('res',$result);    //跳转到显示页面    $this->smarty->view('train/changePage.tpl');  }  //修改  function change() {    //获得前台数据    //ID    $ID = $this->input->post('id');    //用户名    $memberName = $this->input->post('memberName');    //密码    $password = $this->input->post('password');    //真实姓名    $userRealName = $this->input->post('userRealName');    //性别    $sex = $this->input->post('sex');    //出生日期    $bornDay = $this->input->post('bornDay');    //e_mail    $eMail = $this->input->post('eMail');    //密码问题    $question = $this->input->post('question');    //密码答案    $answer = $this->input->post('answer');    //调用model    $this->load->model('train/MQuery','change');    //向model中的change传值    $result = $this->change->change($ID,$memberName,$password,$userRealName,$sex,$bornDay,$eMail,$question,$answer);    //判断返回的结果,如果返回true,则调用本页的index方法,不要写 $result == false 因为返回的值未必是false 也有可能是""    if ($result) {      $this->index();    } else {      echo "change failed.";    }  }}