这篇文章主要介绍了ci框架(codeigniter)实现的数据库增删改查操作,结合实例形式总结分析了ci框架针对mysql数据库增删改查操作的模型、控制器及视图相关定义与使用技巧,需要的朋友可以参考下
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."; } }}models中的 mquery.php 文件
<?phpclass MQuery extends Model { //构造函数 function MQuery() { parent::Model(); //连接数据库 $this->load->database(); } //查询列表 function queryList() { //防止ｓｅｌｅｃｔ出的数据存在乱码问题 //mysql_query("SET NAMES GBK"); //SQL语句 $sql = "ｓｅｌｅｃｔ ID,member_name,sex,e_mail FROM user_info_t"; //执行SQL $rs = $this->db->query($sql); //将查询结果放入到结果集中 $result = $rs->result(); //关闭数据库 $this->db->close(); //将结果集返回 return $result; } //新增 function addRecord($memberName,$password,$userRealName,$sex,$bornDay,$eMail,$question,$answer) { //防止ｓｅｌｅｃｔ出的数据存在乱码问题 //mysql_query("SET NAMES GBK"); //SQL语句 $sql = "ｉｎｓｅｒｔ INTO user_info_t (member_name,password,user_real_name,sex,born_day,e_mail,question,answer) " . "valUES ('$memberName','$password','$userRealName','$sex','$bornDay','$eMail','$question','$answer')"; //执行SQL $result = $this->db->query($sql); //关闭数据库 $this->db->close(); //返回值 return $result; } //删除 function delRecord($deleteID) { //防止ｓｅｌｅｃｔ出的数据存在乱码问题 //mysql_query("SET NAMES GBK"); $sql = "ｄｅｌｅｔｅ FROM user_info_t WHERE ID = $deleteID"; $result = $this->db->query($sql); $this->db->close(); return $result; } //修改前查询 function changeRecord($changeID) { //防止ｓｅｌｅｃｔ出的数据存在乱码问题 //mysql_query("SET NAMES GBK"); $sql = "ｓｅｌｅｃｔ ID,member_name,password,user_real_name,sex,born_day,e_mail,question,answer FROM user_info_t WHERE ID = $changeID"; //执行SQL $rs = $this->db->query($sql); $result = $rs->row();//$result = $rs[0] //关闭数据库 $this->db->close(); //将结果集返回 return $result; } //修改 function change($ID,$memberName,$password,$userRealName,$sex,$bornDay,$eMail,$question,$answer) { //防止ｓｅｌｅｃｔ出的数据存在乱码问题 //mysql_query("SET NAMES GBK"); //SQL语句 $sql = "ｕｐｄａｔｅ user_info_t set member_name = '$memberName',password = '$password', user_real_name = '$userRealName'," . "sex = '$sex',born_day = '$bornDay',e_mail = '$eMail',question = '$question',answer = '$answer'" . "where ID = $ID"; //执行SQL $result = $this->db->query($sql); //关闭数据库 $this->db->close(); //返回值 return $result; }}views 下的 addPage.tpl文件
<html> <head> </head> <body><form action="{{site_url url='train/cquery/add'}}" method="post"> <table border='1'> <tr> <td>用户名</td> <td><input type="text" class="text" name="memberName" id="memberName"/></td> </tr> <tr> <td>密码</td> <td><input type="text" class="text" name="password" id="password"/></td> </tr> <tr> <td>真实姓名</td> <td><input type="text" class="text" name="userRealName" id="userRealName"/></td> </tr> <tr> <td>性别</td> <td><input type="text" class="text" name="sex" id="sex"/></td> </tr> <tr> <td>出生日期</td> <td><input type="text" class="text" name="bornDay" id="bornDay"/></td> </tr> <tr> <td>e_mail</td> <td><input type="text" class="text" name="eMail" id="eMail"/></td> </tr> <tr> <td>密码问题</td> <td><input type="text" class="text" name="question" id="question"/></td> </tr> <tr> <td>密码答案</td> <td><input type="text" class="text" name="answer" id="answer"/></td> </tr> </table> <table> <tr> <td><input type="submit" class="button" name="OK" value="提交" /> </td> </tr> </table></form> </body></html>changePage.tpl 文件
<html> <head> </head> <body><form action="{{site_url url='train/cquery/change'}}" method="post"> <table border='1'><input type="hidden" name="id" value="{{$res->ID}}" /> <tr> <td>用户名</td> <td><input type="text" class="text" name="memberName" id="memberName" value="{{$res->member_name}}" /></td> </tr> <tr> <td>密码</td> <td><input type="text" class="text" name="password" id="password" value="{{$res->password}}" /></td> </tr> <tr> <td>真实姓名</td> <td><input type="text" class="text" name="userRealName" id="userRealName" value="{{$res->user_real_name}}"/></td> </tr> <tr> <td>性别</td> <td><input type="text" class="text" name="sex" id="sex" value="{{$res->sex}}"/></td> </tr> <tr> <td>出生日期</td> <td><input type="text" class="text" name="bornDay" id="bornDay" value="{{$res->born_day}}"/></td> </tr> <tr> <td>e_mail</td> <td><input type="text" class="text" name="eMail" id="eMail" value="{{$res->e_mail}}"/></td> </tr> <tr> <td>密码问题</td> <td><input type="text" class="text" name="question" id="question" value="{{$res->question}}"/></td> </tr> <tr> <td>密码答案</td> <td><input type="text" class="text" name="answer" id="answer" value="{{$res->answer}}"/></td> </tr> </table> <table> <tr> <td><input type="submit" class="button" name="OK" value="提交" /> </td> </tr> </table></form> </body></html>vquery.tpl 文件
<html> <head> <title></title> </head> <body> <table border='1'> <tr> <td>用户名</td> <td>性别</td> <td>e_mail</td> <td>操作</td> </tr> {{foreach from=$res item=row}} <tr> <input type="hidden" value={{$row->ID}}> <td>{{$row->member_name}}</td> <td>{{$row->sex}}</td> <td>{{$row->e_mail}}</td> <td><a href="{{site_url url='train/cquery/deletePage'}}/{{$row->ID}}" rel="external nofollow" >删除</a><a href="{{site_url url='train/cquery/changePage'}}/{{$row->ID}}" rel="external nofollow" >修改</a></td> </tr> {{/foreach}} </table> <a href="{{site_url url='train/cquery/addPage'}}" rel="external nofollow" rel="external nofollow" mce_href="{{site_url url='train/cquery/addPage'}}" rel="external nofollow" rel="external nofollow" >add</a> </body></html>相关推荐：
使用CodeIgniterI框架实现导入、导出数据操作
如何实现CI框架数据库查询缓存优化
免责声明：本站内容仅用于学习参考，信息和图片素材来源于互联网，如内容侵权与违规，请联系我们进行删除，我们将在三个工作日内处理。联系邮箱：chuangshanghai#qq.com（把#换成@）