Calendaring customization [highlighting the current month] - php

Question

I made a method that writes a view with a calendar table which shows all months of a year using the calendaring class.
Controller:
<?php
class Calendar extends CI_Controller {
public function this_year() {
$data['title'] = 'Calendar: ' . date('Y');
$this->load->library('calendar');
$prefs = array(
'local_time' => 'none',
'start_day' => 'sunday',
'month_type' => 'long',
'day_type' => 'short',
'show_next_prev' => FALSE,
'show_other_days' => TRUE,
'template' => '
{table_open}<table class="table table-condensed">{/table_open}
{heading_row_start}<tr class="info">{/heading_row_start}
{cal_cell_start_today}<td class="today">{/cal_cell_start_today}
{cal_cell_start_other}<td class="other-day">{/cal_cell_start_other}
'
);
$this->load->library('calendar', $prefs);
$data['calendar'] = '<table class="table-calendar"><tr>';
for ($i = 1; $i <= 12; $i++) {
if ($i % 3 == 0) {
$data['calendar'].= "<td>{$this->calendar->generate(date('Y'), $i)}</td>";
$data['calendar'].= '</tr><tr>';
}
else {
$data['calendar'].= "<td>{$this->calendar->generate(date('Y'), $i)}</td>";
}
}
$data['calendar'].= '</tr></table>';
$this->template->load('template/index', __CLASS__ . "/" . __FUNCTION__, $data);
}
}
*On VIEW, just echo '$calendar'
It works as well, and returns this.
But I didn't found a way to highlight only the current month using a template in the calendaring class. I tried to modify the default template but it doesn't work because when I change the class of {heading_title_cell}<th colspan="{colspan}">{heading}</th>{/heading_title_cell}, it modifies all the month's labels like this.
I'm using the default methods (same code) from the basic class tutorial. Any suggestion?

Answer 1

It is possible to extend CI_Calendar to force the method generate() pass his $month variable to the parse_template() method. Then, parse_template($month) will be able to apply an exception while parsing the declared template on {heading_row_start}<tr>{/heading_row_start}:
CI_Calendar::parse_template($month), 483:
if($val == 'heading_row_start'){
if( $month == date('m')){
$this->replacements[$val] = '<tr class="info">';
}
}
else{
$this->replacements[$val] = $match[1];
}