致命错误:调用未定义的方法Post::where() - Fatal error: Call to undefined method Post::where()

Fatal error: Call to undefined method Post::where()

数据库出错

错误编号:1054

未知列'//我需要一个有用的解决方案来解决这个错误，经过几个小时的调查-tigating。还是一样的。有人吗?

function update_post($postID,$data){
    $this->where('postID',$postID); //error line
    $this->db->update('posts',$data);
} 
//code of posts.php
function editpost($postID){
    $data['success']=0;
    if($_POST){
        $data_post=array(
            'title'=>$_POST['title'],
            'post'=>$_POST['post'],
            'active'=>1
        );
        $this->post->update_post($postID,$data); // update_post function
        $data['success']=1;
    }
    $data['post']=$this->post->get_post($postID);
    $this->load->view('edit_post',$data);
}

您似乎没有将$data_post的值传递给函数，而是将$data

$data_post=array(
    'title'=>$_POST['title'],
    'post'=>$_POST['post'],
    'active'=>1
);
$this->post->update_post($postID,$data); // update_post function

应:

$data_post=array(
    'title'=>$_POST['title'],
    'post'=>$_POST['post'],
    'active'=>1
);
$this->post->update_post($postID,$data_post); // update_post function