我应该在codeigniter模型的何处添加where子句？

Question

I just want to create a sorting query. When I put the where clause nothing happened.

What should happen is when $search_param['type'] has value it should only output the one who has the $search_param['type'] in sp_archive.SP_Type

Below is the query:

function search_data($search_param){
    if(empty($search_param)){
        return array();
    }else{
    $this->db->select("sp_archive.SP_ID, SP_TITLE, SP_RATIONALE, SP_File, GROUP_CONCAT(Tag.Tag_Name) As Tag");
    $this->db->select("ad.Account_LastName AS ADLastName");
    $this->db->select("ad.Account_FirstName AS ADFirstName");
    $this->db->select("ad.Account_MiddleInitial AS ADMiddleInitial");

    $this->db->select("a.Account_FirstName AS AFirstName");
    $this->db->select("a.Account_MiddleInitial AS AMiddleInitial");
    $this->db->select("a.Account_LastName AS ALastName");

    $this->db->select("b.Account_FirstName AS BFirstName");
    $this->db->select("b.Account_MiddleInitial AS BMiddleInitial");
    $this->db->select("b.Account_LastName AS BLastName");

    $this->db->select("c.Account_FirstName AS CFirstName");
    $this->db->select("c.Account_MiddleInitial AS CMiddleInitial");
    $this->db->select("c.Account_LastName AS CLastName");

    $this->db->from("sp_archive");

    $this->db->join('account ad', 'sp_archive.Adviser = ad.Account_ID','left');
    $this->db->join('account a', 'sp_archive.Proponent_A = a.Account_ID','left');
    $this->db->join('account b', 'sp_archive.Proponent_B = b.Account_ID','left');
    $this->db->join('account c', 'sp_archive.Proponent_C = c.Account_ID','left');
    $this->db->join('tag', 'sp_archive.SP_ID = tag.SP_ID', 'inner');

    $this->db->where('sp_archive.SP_Type', array($search_param['type1'], $search_param['type2'],$search_param['type3'],$search_param['type4']));

    $this->db->like("SP_TITLE", $search_param['search']);   

    $this->db->or_like("ad.Account_LastName", $search_param['search']);
    $this->db->or_like("ad.Account_FirstName", $search_param['search']);
    $this->db->or_like("a.Account_LastName", $search_param['search']);
    $this->db->or_like("a.Account_FirstName", $search_param['search']);
    $this->db->or_like("c.Account_LastName", $search_param['search']);
    $this->db->or_like("c.Account_FirstName", $search_param['search']);
    $this->db->or_like("c.Account_LastName", $search_param['search']);
    $this->db->or_like("c.Account_FirstName", $search_param['search']);

    $this->db->group_by("sp_archive.SP_ID");
    $query = $this->db->get();
    return $query;
    }

Answer 1

As per my comment Your code should be like

 $this->db->where('sp_archive.SP_Type', array($search_param['type1'], $search_param['type2'],$search_param['type3'],$search_param['type4']));

 $this->db->group_start();
 $this->db->like("SP_TITLE", $search_param['search']);   

 $this->db->or_like("ad.Account_LastName", $search_param['search']);
 $this->db->or_like("ad.Account_FirstName", $search_param['search']);
 $this->db->or_like("a.Account_LastName", $search_param['search']);
 $this->db->or_like("a.Account_FirstName", $search_param['search']);
 $this->db->or_like("c.Account_LastName", $search_param['search']);
 $this->db->or_like("c.Account_FirstName", $search_param['search']);
 $this->db->or_like("c.Account_LastName", $search_param['search']);
 $this->db->or_like("c.Account_FirstName", $search_param['search']);
 $this->db->group_end();

Answer 2

 public function select_where($table,$where) { $r = $this->db->get_where($table,$where); // $sql = $this->db->last_query(); //echo $sql; $res = $r->result(); //print_r($res); //die; return $res; }