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Php 如何加入表Codeigniter_Php_Mysql_Codeigniter_Join - Fatal编程技术网

Php 如何加入表Codeigniter

Php 如何加入表Codeigniter,php,mysql,codeigniter,join,Php,Mysql,Codeigniter,Join,我的模型: public function category($column, $value) { $this->db->select('c.cat2, c.category, m.id, m.date, m.when_date, m.when_time, m.where_m, m.age1, m.age2, m.opis, m.rozpoznamy'); $this->db->from('category c'); $this-&

我的模型:

        public function category($column, $value)
{
    $this->db->select('c.cat2, c.category, m.id, m.date, m.when_date, m.when_time, m.where_m, m.age1, m.age2, m.opis, m.rozpoznamy');
    $this->db->from('category c');
    $this->db->where($column, $value);
    $this->db->join('meeting m', 'm.id_cat = c.id');
    $result = $this->db->get();
    return $result->result();
}
        public function delete($where, $column, $value)
{
    $this->db->delete($this->users_m->category($column, $value), $where);
}
我的控制者:

    public function delete()
{
    $cat = $this->uri->segment(3);
    $value = $this->uri->segment(4);
    $column = 'm.id';
    $where = array('m.id' => $value);
    $this->users_m->delete($where, $column, $value);
    redirect('main/category/' . $cat);
}
我无法从联接表中删除数据,尝试删除时收到以下消息:

发生数据库错误

错误号码:1146

表“ci.object”不存在

从`Object`中删除,其中`m`.`id`=“13”

文件名:C:\xampp\htdocs\ci\system\database\DB\u driver.php

电话号码:330


所以函数delete中的表可能有问题。我尝试了不同的方法来达到这张桌子,但我不知道如何解决这个问题。有线索吗

将CI对象传递到$this->db->delete中,因为$this->users\m->category返回对象的db结果数组

CI Delete通过传入表名来工作,在您的情况下,它看起来将是

 public function delete($where) {
     $this->db->where('meeting m', $where);
     $this->db->delete('meeting');
 }

我不明白为什么在那里有额外的值

错误说明所有表'ci.object'都不存在。请确保该表存在!!!我知道,但我认为问题在于:$this->db->delete$this->users\u m->category$column,$value,$where;这里的specyfic:$this->users\m->category$column,$value我正试图从这个模型中的其他functioncategory获取联接表。也许我已经放弃了这个表,直到问题出现:发生了数据库错误错误号:1064您的SQL语法有错误;检查与您的MySQL服务器版本对应的手册,以了解在第1行使用near'm WHERE m.id='13的正确语法从会议中删除m WHERE m.id='13'文件名:C:\xampp\htdocs\ci\system\database\DB\u driver.php行号:330,但更改为:public function DELETE$WHERE{$this->DB->DELETE'meeting m',$WHERE;}好的,把它改成:公共函数delete$where{$this->db->delete'meeting',$where;}和controller:$where=array'id'=>value;现在可以了,谢谢;