本文实例讲述了CI框架表单验证的方法。分享给大家供大家参考,具体如下:
1、form头部信息的自动输出函数(view)
<?php $attributes = array("class" => "email", "id" => "myform"); echo form_open("email/send", $attributes); //上面一行代码输出: //<form method="post" accept-charset="utf-8" action="http://example.com/index.php/email/send" id="myform" class="email"/> /* * form_open_multipart() * 函数用法同上,加上了文件上传的信息 上传方式默认为post */ ?>
2、设置验证规则(controller)
<?php //注意验证规则的变量名必须设置成 config $config = array( array( "field" => "username", "label" => "用户名", "rules" => "required" ), array( "field" => "password", "label" => "密码", "rules" => "required" ), array( "field" => "passconf", "label" => "确认密码", "rules" => "required|matches[password]" ), array( "field" => "tel", "label" => "手机", "rules" => "required|integer|exact_length[11]"), array( "field" => "email", "label" => "邮箱", "rules" => "required|valid_email" ) ); //上面的会自动 //单独设置规则 $this->form_validation->set_rules("username", "Username", "trim|required|min_length[5]|max_length[12]|xss_clean"); $this->form_validation->set_rules("password", "Password", "trim|required|matches[passconf]|md5"); $this->form_validation->set_rules("passconf", "Password Confirmation", "trim|required"); $this->form_validation->set_rules("email", "Email", "trim|required|valid_email"); ?>
3、规则对应的错误提示(controller)
<?php $this->form_validation->set_message("required", "必须填写"); $this->form_validation->set_message("valid_email", "不是有效的email"); ?>
4、运行检查错误信息(controller)
<?php $this->load->helper(array("form", "url")); //加载CI表单验证库 $this->load->library("form_validation"); //---------------------------------------- # 验证规则及错误信息代码放在这里 //---------------------------------------- if ($this->form_validation->run() == FALSE){ //提交失败 重新加载表单部分 $this->load->view("myform"); }else{ //提交成功 表单处理 //跳转成功页面 $this->load->view("formsuccess"); } }
5、错误信息的输出函数(view)
<?php //1.一股脑儿的全部输出(放在表单标签的上方即可) echo validation_errors(); //2.针对单个表单单独输出(放在单个标签附近 参数为对应表单元素的域名) echo form_error("password"); //3.针对单个表单输出的时候 需要修改定界符 显示错误信息样式(控制器里设置) $this->form_validation->set_error_delimiters("<span class="error">", "</span>"); //设置成内联元素比较好 ?>
6、错误后 重新回填表单(view)
<?php //一般元素 回填(放在标签的values属性中输出) echo set_value("email"); //特殊元素select/checkbox/radio 第三个参数为true时 默认被选中 //第二个参数 是对应的表单元素的实际值 echo set_select("myselect", "three"); //放在option的空白属性里 echo set_checkbox("mycheck[]", "1"); //放在checkbox的空白属性里 echo set_radio("myradio", "2"); //放在radio的空白属性里 ?>
html代码:
<html> <head> <title>My Form</title> </head> <body> <?php echo validation_errors(); ?> <?php echo form_open("form"); ?> <h5>Username</h5> <input type="text" name="username" value="<?php echo set_value("username"); ?>" size="50" /> <?php echo form_error("username"); ?> <h5>Password</h5> <input type="text" name="password" value="<?php echo set_value("password"); ?>" size="50" /> <?php echo form_error("password"); ?> <h5>Password Confirm</h5> <input type="text" name="passconf" value="<?php echo set_value("passconf"); ?>" size="50" /> <?php echo form_error("passconf"); ?> <h5>Email Address</h5> <input type="text" name="email" value="<?php echo set_value("email"); ?>" size="50" /> <?php echo form_error("email"); ?> <div><input type="submit" value="Submit" /></div> </form> </body> </html>
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