how to pass variable from one function to another function in codeigniter

Question

I have two functions in my controller like this.

function search_keyword()
{
    $keyword    =   $this->input->post('keyword');
    $this->data['result']    =   $this->mymodel->search($keyword);
    //print_r($this->data); 
    //$pro_id = [];
    foreach($this->data['result'] as $key => $val){
       $pro_id[] = $val->product_id;
    }
    print_r($pro_id);       
    $this->download_function();
    $this->twig->display('home.html', $this->data);
}
function download_function()
{
    //print_r($keyword);
    $this->data['re']    =   $this->csv->ExportCSV($keyword);
    $this->twig->display('home.html', $this->data);
}

I want to pass pro_id variable to download_function from search_keyword funtion.please help me to do this.

this is my model

function ExportCSV($pro_id)
{

    //print_r($keyword);
    $this->load->dbutil();
    $this->load->helper('file');
    $this->load->helper('download');
    $delimiter = ",";
    $newline = "\r\n";
    $filename = "filename_you_wish.csv";
    $query = "SELECT * FROM products WHERE product_id LIKE '%$pro_id%'";
    $result = $this->db->query($query);
    $data = $this->dbutil->csv_from_result($result, $delimiter, $newline);
    force_download($filename, $data);
}

Can't you just do this: $this->download_function($pro_id); — Muhammad Bilal
– Muhammad Bilal, Commented Aug 26, 2015 at 10:18
Pass variable $this->download_function(VARIABLE); and getting using function download_function(VARIABLE) — Saty
– Saty, Commented Aug 26, 2015 at 10:18
@saty I do what you said. function download_function($pro_id) then I got an error which saying Missing argument 1 for Search::download_function() what should I do now? — Udara Suranga
– Udara Suranga, Commented Aug 26, 2015 at 10:26
@madforstrength I try that way. but then I got an error like this Missing argument 1 for Search::download_function() .can you please help me to solve this problem. — Udara Suranga
– Udara Suranga, Commented Aug 26, 2015 at 10:29

Giri Annamalai M · Accepted Answer · 2015-08-26 10:23:21Z

1

function search_keyword()
{
    $keyword    =   $this->input->post('keyword');
    $this->data['result']    =   $this->mymodel->search($keyword);
    //print_r($this->data); 
    //$pro_id = [];
    foreach($this->data['result'] as $key => $val){
       $pro_id[] = $val->product_id;
    }
    print_r($pro_id);       
    $this->download_function($pro_id);
    $this->twig->display('home.html', $this->data);
}
function download_function($pro_id)
{
    //print_r($keyword);
    $this->data['re']    =   $this->csv->ExportCSV($keyword);
    $this->twig->display('home.html', $this->data);
}

You can pass it through parameter.

answered Aug 26, 2015 at 10:23

Giri Annamalai M

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2 Comments

Udara Suranga Over a year ago

I try this. but then I got error like this Missing argument 1 for Search::download_function(). what should I do now.

Giri Annamalai M Over a year ago

If you want to access the function download_function, you must mention the argument. Like this, $pro_id=1; localhost/diectory/controllername/download_function/$pro_id

RiggsFolly · Accepted Answer · 2015-08-26 12:51:22Z

0

Its quite simple, do exactly what you would do to pass a paramter to any function.

public function search_keyword() {
    $keyword    =   $this->input->post('keyword');
    $this->data['result']    =   $this->mymodel->search($keyword);
    //print_r($this->data); 
    $pro_id = [];
    foreach($this->data['result'] as $key => $val){
       $pro_id[] = $val->product_id;
    }
    print_r($pro_id);       
    $this->download_function($pro_id);
    $this->twig->display('home.html', $this->data);
}

public function download_function($pro_ids) {
    //print_r($keyword);
    $this->data['re']      =   $this->csv->ExportCSV($keyword);
    $this->data['pro_ids'] =   $pro_ids;
    $this->twig->display('home.html', $this->data);
}

After some time in a chat room the solution we came up with was to chnage the code to this:

function search_keyword()
{
    $pro_id = $this->input->post('keyword');
    $this->download_function($pro_id);
    $this->twig->display('home.html', $this->data);
}

function download_function($pro_id)
{
    $this->data['re'] = $this->csv->ExportCSV($pro_id);
    $this->twig->display('home.html', $this->data);
}

edited Aug 26, 2015 at 12:51

answered Aug 26, 2015 at 10:24

RiggsFolly

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7 Comments

Udara Suranga Over a year ago

yep. I tried this.but I got an error. also can you please tell my why you put a 's' after $pro_id in second function.

RiggsFolly Over a year ago

$pro_ids the s pluralises the name indicating there is likely to be more that one of whatever this is. It is an array afterall. What error did you get

RiggsFolly Over a year ago

Actually thinking about it, you said this was a controller. Should you not have a public/protected/private designator on the function definitions! See code change

Udara Suranga Over a year ago

I got error like this Missing argument 1 for Search::download_function(). Please help me to solve this

RiggsFolly Over a year ago

Ahhhh I bet the database query is failing, or it is not returning what you think, and therefore the foreach is not running and therefore you are never actually creating the $pro_id variable. I uncommented the //$pro_id = []; try it now

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