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  • CSV helper for exporting data in cakephp

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    We can use CSV helper for exporting data in excelsheet in cakephp.

    For using CSV helper we have to follow simple steps.

    Step 1:- Firstly we have to create a file naming CsvHelper.php and have to save it in our app/view/Helper directory.

    Below is the code which CsvHelper.php  file contain

    <?php
    class CsvHelper extends AppHelper
    {
    var $delimiter = ',';
    var $enclosure = '"';
    var $filename = 'Export.csv';
    var $line = array();
    var $buffer;
    
    function CsvHelper()
    {
        $this->clear();
    }
    function clear() 
    {
        $this->line = array();
        $this->buffer = fopen('php://temp/maxmemory:'. (5*1024*1024), 'r+');
    }
    
    function addField($value) 
    {
        $this->line[] = $value;
    }
    
    function endRow() 
    {
        $this->addRow($this->line);
        $this->line = array();
    }
    
    function addRow($row) 
    {
        fputcsv($this->buffer, $row, $this->delimiter, $this->enclosure);
    }
    
    function renderHeaders() 
    {
        header('Content-Type: text/csv');
        header("Content-type:application/vnd.ms-excel");
        header("Content-disposition:attachment;filename=".$this->filename);
    }
    
    function setFilename($filename) 
    {
        $this->filename = $filename;
        if (strtolower(substr($this->filename, -4)) != '.csv') 
        {
            $this->filename .= '.csv';
        }
    }
    
    function render($outputHeaders = true, $to_encoding = null, $from_encoding ="auto") 
    {
        if ($outputHeaders) 
        {
            if (is_string($outputHeaders)) 
            {
                $this->setFilename($outputHeaders);
            }
            $this->renderHeaders();
        }
        rewind($this->buffer);
        $output = stream_get_contents($this->buffer);
    
        if ($to_encoding) 
        {
            $output = mb_convert_encoding($output, $to_encoding, $from_encoding);
        }
        return $this->output($output);
    }
    }
    ?>
    

    Step 2:- Then we have add this CsvHelper  in our controller by using below code .

    var $helpers = array('Html', 'Form','Csv'); 

    Step 3:- Then we have to create export method in our controller which contains below code.

    function export()
    {
        $this->set('posts', $this->Post->find('all'));
        $this->layout = null;
        $this->autoLayout = false;
        Configure::write('debug','0');
    }

    Step 4:- Then we have to create ctp file for export function i.e export.ctp which contain below code .

    <?php
    
    $line= $posts[0]['Post'];
    $this->CSV->addRow(array_keys($line));
     foreach ($posts as $post)
     {
       $line= $post['Post']; 
       $this->CSV->addRow($line);
     }
     $filename='posts';
     echo  $this->CSV->render($filename);
    ?>
    
    

    Step 5:- Now we have to add link to  our view file by using below code. On this link click we will see our data in excelsheet  format.

    <?php echo $this->Html->link('Export',array('controller'=>'posts','action'=>'export'), array('target'=>'_blank'));?>
    

     

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