codeigniter database error number 1064 on update data - php

Question

I want to update user data in the Code-igniter (user details)
below is my code for more checking . please check it out why I get error when i push "update" button.
note: I used some of these information in my view that I didn't copied theme for now (no need in-fact )
controller:
public function edit(){
//validation form
$this->form_validation->set_rules('first_name', 'First Name', 'trim|required|min_length[4]|xss_clean');
$this->form_validation->set_rules('last_name', 'Last Name', 'trim|required|min_length[4]|xss_clean');
$this->form_validation->set_rules('email','Email','trim|required|valid_email|is_unique[users.email]');
$this->form_validation->set_rules('username','Username','trim|required|min_length[3]|max_length[16]');
$this->form_validation->set_rules('password','Password','trim|min_length[3]|max_length[50]');
$this->form_validation->set_rules('password2','Confirm Password','trim|matches[password]');
$this->form_validation->set_rules('cellphone','Cellphone Number','trim|required');
$this->form_validation->set_rules('activation_code','Activation Code','trim');
//$data['groups'] = $this->User_model->get_groups();
//$data['user'] = $this->User_model->get_user($uid);
if($this->form_validation->run() == FALSE) {
//view
$data = array(
'userid' => $this->session->userdata('user_id')->id,
'first_name' => $this->session->userdata('user_id')->first_name,
'last_name' => $this->session->userdata('user_id')->last_name,
'fathers_name' => $this->session->userdata('user_id')->fathers_name,
'id_card_number' => $this->session->userdata('user_id')->id_card_number,
'national_number' => $this->session->userdata('user_id')->national_code,
'national_code' => $this->session->userdata('user_id')->national_code,
'age' => $this->session->userdata('user_id')->age,
'gender' => $this->session->userdata('user_id')->gender,
'is_addict' => $this->session->userdata('user_id')->is_addict,
'hiv_status' => $this->session->userdata('user_id')->hiv_status,
'hepatitis_status' => $this->session->userdata('user_id')->hepatitis_status,
'email' => $this->session->userdata('user_id')->email,
'needed_services' => $this->session->userdata('user_id')->needed_services,
'username' => $this->session->userdata('user_id')->username,
);
//$data['last_name'] = $this->session->userdata('user_id')->last_name;
//$data['data'] = $this->Profile_Model->get_user_profile();
//$this->base->set_message($msg,$type);
redirect(site_url('admin/profile'),'refresh');
$data['courses'] = $this->Profile_Model->get_user_profile();
//load view
$data['main_content'] = 'profile/index';
$this->load->view('profile/layouts/main', $data);
}else{
//create articles data array
$data = array(
'first_name' => $this->input->post('first_name'),
'last_name' => $this->input->post('last_name'),
'username' => $this->input->post('username'),
'email' => $this->input->post('email'),
'cellphone' => $this->input->post('cellphone'),
'group_id' => 2,
);
if($this->input->post('user_id') == $this->session->userdata('user_id')->id){
$uid = $this->input->post('user_id');
}
$password = $this->input->post('password');
$password2 = $this->input->post('password2');
if($password != '' && $password = $password2 ){
$data['password'] = md5($this->input->post('password'));
}
if($this->input->post('activation_code') !=''){
$data['activation_code'] = $this->input->post('activation_code');
}
$this->Profile_Model->update($data, $uid);
//Create Message
$this->session->set_flashdata('User_saved','You have successfully registered');
//redirect to page
redirect('admin/profile');
}
}
also below is my model snippet code:
model:
public function update($data, $uid)
{
$this->db->where('id', $uid);
$result = $this->db->update($this->table_users, $data);
return $result;
}
and below is my view form:
view:
<?php echo form_open(base_url('admin/profile/edit'),'class="form-horizontal"');?>
<?php $uid = $this->session->userdata('user_id')->id;
$uid = intval($uid);
?>
<div class="form-group">
<label class="col-sm-1 control-label" for="first_name">نام</label>
<input type="hidden" name="user_id" value="<?php echo $uid;?>">
<div class="col-sm-5">
<input type="text" id="first_name" name="first_name" class="form-control" value="<?php echo set_value('first_name',$first_name);?>">
</div>
<label class="col-sm-1 control-label" for="last_name">نام خانوادگی</label>
<div class="col-sm-5">
<input type="text" id="last_name" name="last_name" class="form-control" value="<?php echo set_value('last_name',$last_name);?>">
</div>
</div>
<div class="form-group">
<label class="col-sm-1 control-label" for="email">ایمیل</label>
<div class="col-sm-5">
<input type="email" id="email" name="email" class="form-control" value="<?php /** #var dbObject $email */
echo set_value('email',$email);?>">
</div>
<label class="col-sm-1 control-label" for="username">نام کاربری</label>
<div class="col-sm-5">
<input type="text" class="form-control" value="<?php echo $username;?>" disabled aria-disabled="true" title="You cant't change your username" />
</div>
</div>
<div class="form-group">
<label class="col-sm-1 control-label" for="password">رمز ورود</label>
<div class="col-sm-5">
<input type="password" id="password" name="password" class="form-control">
</div>
<label class="col-sm-1 control-label" for="password2">تایید رمز</label>
<div class="col-sm-5">
<input type="password" id="password2" name="password2" class="form-control">
</div>
</div>
<div class="form-group">
<label class="col-sm-1 control-label" for="cellphone">شماره تلفن همراه</label>
<div class="col-sm-5">
<input type="tel" id="cellphone" name="cellphone" class="form-control">
</div>
<label class="col-sm-1 control-label" for="cellphone_activation">کد تایید پیامکی</label>
<div class="col-sm-5">
<input type="text" id="cellphone_activation" name="cellphone_activation" class="form-control">
</div>
</div>
<div class="form-group">
<div class="col-sm-5 col-sm-offset-1">
<p>
<button class="btn mybtn btn-custom" type="submit">ویرایش</button>
</p>
</div>
</div>
<?php echo form_close();?>

Answer 1

Model Should be like this write table name instead of $this->table_users
public function update($data, $uid)
{
$this->db->where('id', $uid);
$result = $this->db->update(user, $data);
return $result;
}