Joomla Export to CSV

lead_controller.php

<?php
/**
 * @version     1.0.0
 * @package     com_stats
 * @copyright   Copyright (C) 2012. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

// No direct access.
defined('_JEXEC') or die;

jimport('joomla.application.component.controlleradmin');

class StatsControllerLeads extends JControllerAdmin
{
	/**
	 * Proxy for getModel.
	 * @since	1.6
	 */
	public function getModel($name = 'Leads', $prefix = 'StatsModel')
	{
		$model = parent::getModel($name, $prefix, array('ignore_request' => true));
		return $model;
	}
	
	public function export()
	{
		header("Content-type: text/csv");
		header("Content-Disposition: attachment; filename=leads.csv");
		header("Pragma: no-cache");
		header("Expires: 0");
		
		$this->getModel()->getCsv();
		
		jexit();
	}
}

lead_model.php

<?php
/**
 * @version     1.0.0
 * @package     com_stats
 * @copyright   Copyright (C) 2012. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

// No direct access.
defined('_JEXEC') or die;

jimport('joomla.application.component.modellist');

class StatsModelLeads extends JModelList
{

	/**
	 * Constructor.
	 *
	 * @param    array    An optional associative array of configuration settings.
	 * @see      JController
	 * @since    1.6
	 */
	public function __construct($config = array())
	{
		if (empty($config['filter_fields']))
		{
			$config['filter_fields'] = array(
				'id', 'a.id',
				'created_time', 'a.created_time',
				'form_type', 'a.form_type',
				'first_name', 'a.first_name',
				'last_name', 'a.last_name',
				'email', 'a.email'
			);
		}

		parent::__construct($config);
	}


	/**
	 * Method to auto-populate the model state.
	 *
	 * Note. Calling getState in this method will result in recursion.
	 */
	protected function populateState($ordering = null, $direction = null)
	{
		// Initialise variables.
		$app = JApplication::getInstance('administrator');

		// Load the filter state.
		$filter_form_type = $app->getUserStateFromRequest($this->context.'.filter.form_type', 'filter_form_type');
		$this->setState('filter.form_type', $filter_form_type);

		$filter_start_date = $app->getUserStateFromRequest($this->context.'.filter.start_date', 'filter_start_date');
		$this->setState('filter.start_date', $filter_start_date);

		$filter_end_date = $app->getUserStateFromRequest($this->context.'.filter.end_date', 'filter_end_date');
		$this->setState('filter.end_date', $filter_end_date);

		// Load the parameters.
		$params = JComponentHelper::getParams('com_stats');
		$this->setState('params', $params);

		// List state information.
		parent::populateState('a.first_name', 'asc');
	}

	/**
	 * Build an SQL query to load the list data.
	 *
	 * @return JDatabaseQuery
	 * @since 1.6
	 */
	protected function getListQuery()
	{
		// Create a new query object.
		$db  = $this->getDbo();
		$query = $db->getQuery(true);

		// Select the required fields from the table.
		$query->select('a.*');
		$query->from('`#__stats_leads` AS a');

		// Filtering form_type
		$filter_form_type = $this->getState("filter.form_type");

		if ($filter_form_type)
		{
			$query->where("a.form_type = '{$filter_form_type}'");
		}

		$filter_start_date = (string) $this->getState("filter.start_date");
		$filter_end_date = (string) $this->getState("filter.end_date");

		// Filtering start_date
		if ($filter_start_date !== '')
		{
			$query->where("a.created_time >= '{$filter_start_date} 00:00:00'");
		}

		// Filtering end_date
		if ($filter_end_date !== '')
		{
			$query->where("a.created_time <= '{$filter_end_date} 23:59:59'");
		}

		return $query;
	}

	public function getCsv()
	{
		$this->populateState();

		$db  = $this->getDbo();
		$cols = array_keys($db->getTableColumns('#__stats_leads'));
		$items = $db->setQuery($this->getListQuery())->loadObjectList();

		$csv = fopen('php://output', 'w');
		fputcsv($csv, $cols);

		foreach ($items as $line)
		{
			fputcsv($csv, (array) $line);
		}

		return fclose($csv);
	}
}