So fügen Sie nur einige Spalten aus der Abfrage in CodeIgniter hinzu

Question

Ich versuche, Daten in CSV zu exportieren. Ich möchte nur einige Felder in CSV in CodeIgniter, aber es sagt "Sie müssen ein gültiges Ergebnisobjekt senden". Mache ich irgendeinen Fehler in meinem Code?

Hier ist der Code, den ich versucht:

$projectdetails = $this->db->query('select hs_hr_employee.emp_number,hs_hr_employee.emp_firstname,hs_hr_employee.emp_middle_name,hs_hr_employee.emp_lastname,ohrm_customer.customer_id,ohrm_customer.name as customername,ohrm_project.project_id,ohrm_project.customer_id,ohrm_project.name as projectname, 
       ohrm_project_admin.*, hs_hr_employee.* 
       from hs_hr_employee,ohrm_customer,ohrm_project, 
       ohrm_project_admin where 
       ohrm_project_admin.project_id=ohrm_project.project_id and 
       ohrm_project.customer_id=ohrm_customer.customer_id and ohrm_project_admin.project_id=ohrm_project.project_id and ohrm_project_admin.emp_number=hs_hr_employee.emp_number 
       '); 


    $this->load->dbutil(); 
    $this->load->helper('download'); 
    $delimiter = ","; 
    $newline = "\r\n"; 
    foreach($projectdetails->result() as $projectdetails12) 
    { 
     $projectname=$projectdetails12->projectname; 
     $customername=$projectdetails12->customername; 
     $projectadmin=$projectdetails12->emp_firstname.$projectdetails12->emp_middle_name.$projectdetails12->emp_lastname; 
     $downloadprojectdetails=array('projectname'=>$projectname,'customername'=>$customername,'projectadmin'=>$projectadmin); 

     $filename = 'projectdetails.csv'; 
     $data = $this->dbutil->csv_from_result($downloadprojectdetails, $delimiter, $newline); 
     force_download($filename, $data); 
    } 

output using print_r 
Array ([0] => stdClass Object ([emp_number] => 3 [emp_firstname] => Suresh [emp_middle_name] => [emp_lastname] => Katiki [customer_id] => 1 [customername] => suresh [project_id] => 2 [projectname] => fff) [1] => stdClass Object ([emp_number] => 2 [emp_firstname] => praveen [emp_middle_name] => [emp_lastname] => reddy [customer_id] => 2 [customername] => praveen [project_id] => 3 [projectname] => ota) [2] => stdClass Object ([emp_number] => 1 [emp_firstname] => chandra [emp_middle_name] => [emp_lastname] => kanth [customer_id] => 3 [customername] => chandra [project_id] => 1 [projectname] => orangehrm) [3] => stdClass Object ([emp_number] => 4 [emp_firstname] => aashish [emp_middle_name] => [emp_lastname] => madiri [customer_id] => 4 [customername] => aashish [project_id] => 4 [projectname] => test)) 

Answer 1

$this->dbutil->csv_from_result Bedürfnisse nur Abfrage nicht Objekt Ergebnisobjekt. hier haben Sie $this->dbutil->csv_from_result($projectdetails,$delimiter, $newline); noch keine Array oder Ergebnisobjekt unter Code

Versuch passieren

$projectdetails = $this->db->query('select ohrm_project.name as projectname, 
concat(hs_hr_employee.emp_firstname," ",hs_hr_employee.emp_middle_name," ", hs_hr_employee.emp_lastname) as projectadmin, 
ohrm_customer.name as customername 
      from hs_hr_employee,ohrm_customer,ohrm_project, 
      ohrm_project_admin where 
      ohrm_project_admin.project_id=ohrm_project.project_id and 
      ohrm_project.customer_id=ohrm_customer.customer_id and ohrm_project_admin.project_id=ohrm_project.project_id and ohrm_project_admin.emp_number=hs_hr_employee.emp_number 
      '); 


$this->load->dbutil(); 
$this->load->helper('download'); 
$this->load->helper('file'); 
$delimiter = ","; 
$newline = "\r\n"; 
$filename = 'projectdetails.csv'; 
if($projectdetails->num_rows() >0) 
{ 
    $data = $this->dbutil->csv_from_result($projectdetails, $delimiter, $newline); 
    force_download($filename, $data); 
}