use ajax call to load a view codeigniter - php

Question

I am trying to load a view through ajax passing in a post variable through controller following is my ajax call:
$('#image_id').on('click',function(){
var image_id = $('#image_id').val();
alert(image_id);
if(image_id != '')
{
alert('called');
$.ajax({
url:"<?php echo site_url('Site/load_add')?>",
method:"POST",
dataType: "html",
data:{add_id:image_id},
success:function(data)
{
window.location.href = "<?php echo site_url('Site/load_add')?>";
}
});
}
else
{
alert('Error');
}
});
I am using the add_id to retrieve data from the database in my controller below:
public function load_add()
{
$this->load->model('Product_model');
$data['advert_data']=$this->Product_model->get_specific_add($this->input->post('add_id'));
$array_info2 = array(
"title" => "View Add"
);
$this->load->view('include/header', $array_info2);
$this->load->view('include/navbar_logged_in');
$this->load->view('Site/site_load_add',$data);
$this->load->view('include/footer');
}
I am getting an error at the point of data retrieval from DB, as the model does not have the add_id. Following is my model code
public function get_specific_add($image_id)
{
$this->db->select('adverts.title,adverts.item_condition,adverts.add_type,adverts.address,adverts.price,adverts.negotiable,adverts.product_description,adverts.create_time, users.first_name,users.last_name,users.mobile,users.email,users.image_name');
$this->db->from('adverts,countries,states,cities,users');
$this->db->where('adverts.id= $image_id_new');
$this->db->where('adverts.country_id=countries.id');
$this->db->where('adverts.city_id=states.id');
$this->db->where('adverts.area=cities.id');
$this->db->where('adverts.user_id=users.id ');
$this->db->where('adverts.id= $image_id');
$query = $this->db->get();
return $query->result();
}
Appreciate if someone can help me on this. The page i am trying to load is Site/site_load_add. Thanks

Answer 1

You've call same url with both GET|POST, First call POST is ok, but in GET that's your error.
$.ajax({
// first call is OK!
url:"<?php echo site_url('Site/load_add')?>",
method:"POST",
dataType: "html",
data:{add_id:image_id},
success:function(data)
{
// BUG HERE, This's a GET call and with No query string
// Will `$this->input->post('add_id')` found nothing.
window.location.href = "<?php echo site_url('Site/load_add')?>";
}

Answer 2

Thank you all for the support, I got this sorted by passing the ID of the advert a below:
public function load_add($id)
{
$this->load->model('Product_model');
$data['advert_data'] = $this->Product_model->get_specific_add($id);
$data['adverts'] = $this->Product_model->get_adverts();//get database query output to the array
$array_info2 = array(
"title" => "View Add"
);
$this->load->view('include/header', $array_info2);
$this->load->view('include/navbar_logged_in');
$this->load->view('Site/site_load_add', $data);
$this->load->view('include/footer');
}
Thanks