问题描述
我在一个网站在codeigniter。我不是那么专家使用framework.Hera我必须检查电子邮件是否已经存在database.I已编码所需的功能,但我收到一个错误,当提交表单。
我的代码是:
在控制器中我有以下规则。
I am working on a site in codeigniter.I am not so expert using framework.Hera I have to check if email already exists in database.I have coded the required functionality but I am getting an error when submit the form.My code is:In controller i have made the following rule.
$this->form_validation->set_rules(
'email', 'Email', 'trim|required|valid_email|is_unique|callback_isEmailExist'
);
public function isEmailExist($email) {
$this->load->library('form_validation');
$this->load->model('user');
$is_exist = $this->user->isEmailExist($email);
if ($is_exist) {
$this->form_validation->set_message(
'isEmailExist', 'Email address is already exist.'
);
return false;
} else {
return true;
}
}
in model user the function is :
function isEmailExist($email) {
$this->db->select('id');
$this->db->where('email', $email);
$query = $this->db->get('users');
if ($query->num_rows() > 0) {
return true;
} else {
return false;
}
}
我提交表单时,错误。
遇到PHP错误
严重性:通知
消息:未定义的补偿:1
Message: Undefined offset: 1
文件名:libraries / Form_validation.php
Filename: libraries/Form_validation.php
发生数据库错误
错误号码:1064
您的SQL语法有错误;检查对应于您的MySQL服务器版本的手册,以获取在第2行附近的'WHERE`='[email protected]'LIMIT 1'使用的正确语法
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE ` = '[email protected]' LIMIT 1' at line 2
SELECT * WHERE`='[email protected]'LIMIT 1
SELECT * WHERE ` = '[email protected]' LIMIT 1
文件名:C:\ xampp\htdocs\aunction\system\database\DB_driver .php
Filename: C:\xampp\htdocs\aunction\system\database\DB_driver.php
行号:330
任何人帮助我。
提前感谢。
Line Number: 330Anyone help me please.Thanks in advance.
推荐答案
您的问题在set_rules行。这里使用 is_unique
和回调
函数。你必须使用任何人。如果使用call_back函数检查重复数据;不需要使用is_unique。 对于这个错误你得到那个错误
只要从那里删除 is_unique
。
Your problem is in the set_rules line. Here you use both is_unique
and a callback
function. You have to use anyone of that. If you use a call_back function to check duplicate data; doesn't need to use is_unique. For this wrong you get that error
Just remove the is_unique
from there.
$this->form_validation->set_rules('email','Email','trim|required|valid_email|callback_isEmailExist'); // removed is_unique
尝试一下,让我知道。
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