/**
* A method used to join the campaign donations table on the campaigns query.
*
* @param string $join_statement
* @return string
* @access public
* @static
* @since 1.0.0
*/
public static function join_campaign_donations_table($join_statement)
{
global $wpdb;
$statuses = Charitable_Donation::get_approval_statuses();
$statuses = array_filter($statuses, array('Charitable_Donation', 'is_valid_donation_status'));
$statuses = "'" . implode("','", $statuses) . "'";
$join_statement .= " LEFT JOIN ( SELECT cd1.campaign_donation_id, cd1.donation_id, cd1.donor_id, cd1.amount, cd1.campaign_id\r\n\t\t\tFROM {$wpdb->prefix}charitable_campaign_donations cd1 \r\n\t\t\tINNER JOIN {$wpdb->posts} po1 ON cd1.donation_id = po1.ID\r\n\t\t\tWHERE po1.post_status IN ( {$statuses} )\r\n\t\t) cd ON cd.campaign_id = {$wpdb->posts}.ID";
return $join_statement;
}
/**
* Return the number of users who have donated to the given campaign.
*
* @global wpdb $wpdb
* @param int $campaign_id
* @param boolean $include_all If false, only
* @return int
* @since 1.0.0
*/
public function count_campaign_donors($campaign_id, $include_all = false)
{
global $wpdb;
$statuses = $include_all ? array() : Charitable_Donation::get_approval_statuses();
list($status_clause, $parameters) = $this->get_donation_status_clause($statuses);
array_unshift($parameters, $campaign_id);
$sql = "SELECT COUNT( DISTINCT cd.donor_id ) \n\t\t\t\tFROM {$this->table_name} cd\n\t\t\t\tINNER JOIN {$wpdb->posts} p ON p.ID = cd.donation_id\n\t\t\t\tWHERE cd.campaign_id = %d\n\t\t\t\t{$status_clause};";
return $wpdb->get_var($wpdb->prepare($sql, $parameters));
}