Codeigniter AJAX数据返回空

Question

So I'm not exactly proficient in using codeiginiter but I've been working with it for a while now.

I'm trying to make an SQL query to search for books in the database, but the ajax always returns empty.

I echoed a few dummy strings to make sure that a proper connection is established between the controller and the view, and I made sure the SQL query itself works, but I don't understand why this still happens.

This is the javascript:

    $('#search').on("keyup", function() {
search = $(this).val();
console.log("Search Term: " + search);
$.ajax
({
    type: "POST",
    url: base_url + "vault/quick_search",
    data: {search_term:search},
    dataType: 'json',
    success: function(data)
    {
      console.log("Result: " + data);
    }, 
    error: function(data)
    {
        alert("?");
    }
});
});

This is the controller:

      function quick_search()
    {
       $search = $this->input->post('search_term');
       $result = $this->vault_instance->quick_search($search);
       echo json_encode($result);
    }

This is the model:

      function quick_search($search_term)
 {
   $sql = "SELECT * FROM books WHERE title LIKE '%harr%' OR author LIKE '%harr%'";
    $query = $this->db->query($sql);
    return $query->result_array;
 }

NOTE: sorry for the poor editing, this is my first time asking a question. Also, in the model I used "harr" as a test, I understand it's not the search term itself, it still returns empty

Answer 1

You need to change this line:

return $query->result_array; 

With:

return $query->result_array();

Becuase result_array() is a function which return you result into array format.