Calendaring Class¶
The Calendar class enables you to dynamically create calendars. Your calendars can be formatted through the use of a calendar template, allowing 100% control over every aspect of its design. In addition, you can pass data to your calendar cells.
Using the Calendaring Class¶
Initializing the Class¶
Like most other classes in CodeIgniter, the Calendar class is initialized in your controller using the $this->load->library function:
$this->load->library('calendar');
Once loaded, the Calendar object will be available using:
$this->calendar
Displaying a Calendar¶
Here is a very simple example showing how you can display a calendar:
$this->load->library('calendar');
echo $this->calendar->generate();
The above code will generate a calendar for the current month/year based on your server time. To show a calendar for a specific month and year you will pass this information to the calendar generating function:
$this->load->library('calendar');
echo $this->calendar->generate(2006, 6);
The above code will generate a calendar showing the month of June in 2006. The first parameter specifies the year, the second parameter specifies the month.
Passing Data to your Calendar Cells¶
To add data to your calendar cells involves creating an associative array in which the keys correspond to the days you wish to populate and the array value contains the data. The array is passed to the third parameter of the calendar generating function. Consider this example:
$this->load->library('calendar');
$data = array(
3 => 'http://example.com/news/article/2006/03/',
7 => 'http://example.com/news/article/2006/07/',
13 => 'http://example.com/news/article/2006/13/',
26 => 'http://example.com/news/article/2006/26/'
);
echo $this->calendar->generate(2006, 6, $data);
Using the above example, day numbers 3, 7, 13, and 26 will become links pointing to the URLs you’ve provided.
Note
By default it is assumed that your array will contain links. In the section that explains the calendar template below you’ll see how you can customize how data passed to your cells is handled so you can pass different types of information.
Setting Display Preferences¶
There are seven preferences you can set to control various aspects of the calendar. Preferences are set by passing an array of preferences in the second parameter of the loading function. Here is an example:
$prefs = array(
'start_day' => 'saturday',
'month_type' => 'long',
'day_type' => 'short'
);
$this->load->library('calendar', $prefs);
echo $this->calendar->generate();
The above code would start the calendar on saturday, use the “long” month heading, and the “short” day names. More information regarding preferences below.
Preference | Default | Options | Description |
---|---|---|---|
template | None | None |
|
local_time | time() | None | A Unix timestamp corresponding to the current time. |
start_day | sunday | Any week day (sunday, monday, tuesday, etc.) | Sets the day of the week the calendar should start on. |
month_type | long | long, short |
|
day_type | abr | long, short, abr |
|
show_next_prev | FALSE | TRUE/FALSE (boolean) |
|
next_prev_url | controller/method | A URL | Sets the basepath used in the next/previous calendar links. |
show_other_days | FALSE | TRUE/FALSE (boolean) |
|
Showing Next/Previous Month Links¶
To allow your calendar to dynamically increment/decrement via the next/previous links requires that you set up your calendar code similar to this example:
$prefs = array(
'show_next_prev' => TRUE,
'next_prev_url' => 'http://example.com/index.php/calendar/show/'
);
$this->load->library('calendar', $prefs);
echo $this->calendar->generate($this->uri->segment(3), $this->uri->segment(4));
You’ll notice a few things about the above example:
- You must set the “show_next_prev” to TRUE.
- You must supply the URL to the controller containing your calendar in the “next_prev_url” preference. If you don’t, it will be set to the current controller/method.
- You must supply the “year” and “month” to the calendar generating function via the URI segments where they appear (Note: The calendar class automatically adds the year/month to the base URL you provide.).
Creating a Calendar Template¶
By creating a calendar template you have 100% control over the design of your calendar. Using the string method, each component of your calendar will be placed within a pair of pseudo-variables as shown here:
$prefs['template'] = '
{table_open}<table border="0" cellpadding="0" cellspacing="0">{/table_open}
{heading_row_start}<tr>{/heading_row_start}
{heading_previous_cell}<th><a href="{previous_url}"><<</a></th>{/heading_previous_cell}
{heading_title_cell}<th colspan="{colspan}">{heading}</th>{/heading_title_cell}
{heading_next_cell}<th><a href="{next_url}">>></a></th>{/heading_next_cell}
{heading_row_end}</tr>{/heading_row_end}
{week_row_start}<tr>{/week_row_start}
{week_day_cell}<td>{week_day}</td>{/week_day_cell}
{week_row_end}</tr>{/week_row_end}
{cal_row_start}<tr>{/cal_row_start}
{cal_cell_start}<td>{/cal_cell_start}
{cal_cell_start_today}<td>{/cal_cell_start_today}
{cal_cell_start_other}<td class="other-month">{/cal_cell_start_other}
{cal_cell_content}<a href="{content}">{day}</a>{/cal_cell_content}
{cal_cell_content_today}<div class="highlight"><a href="{content}">{day}</a></div>{/cal_cell_content_today}
{cal_cell_no_content}{day}{/cal_cell_no_content}
{cal_cell_no_content_today}<div class="highlight">{day}</div>{/cal_cell_no_content_today}
{cal_cell_blank} {/cal_cell_blank}
{cal_cell_other}{day}{cal_cel_other}
{cal_cell_end}</td>{/cal_cell_end}
{cal_cell_end_today}</td>{/cal_cell_end_today}
{cal_cell_end_other}</td>{/cal_cell_end_other}
{cal_row_end}</tr>{/cal_row_end}
{table_close}</table>{/table_close}
';
$this->load->library('calendar', $prefs);
echo $this->calendar->generate();
Using the array method, you will pass key => value pairs. You can pass as many or as few values as you’d like. Omitted keys will use the default values inherited in the calendar class.
Example:
$prefs['template'] = array(
'table_open' => '<table class="calendar">',
'cal_cell_start' => '<td class="day">',
'cal_cell_start_today' => '<td class="today">'
);
$this->load->library('calendar', $prefs);
echo $this->calendar->generate();
Class Reference¶
- class CI_Calendar¶
- initialize([$config = array()])¶
Parameters: - $config (array) – Configuration parameters
Returns: CI_Calendar instance (method chaining)
Return type: CI_Calendar
Initializes the Calendaring preferences. Accepts an associative array as input, containing display preferences.
- generate([$year = ''[, $month = ''[, $data = array()]]])¶
Parameters: - $year (int) – Year
- $month (int) – Month
- $data (array) – Data to be shown in the calendar cells
Returns: HTML-formatted calendar
Return type: string
Generate the calendar.
- get_month_name($month)¶
Parameters: - $month (int) – Month
Returns: Month name
Return type: string
Generates a textual month name based on the numeric month provided.
- get_day_names($day_type = '')¶
Parameters: - $day_type (string) – ‘long’, ‘short’, or ‘abr’
Returns: Array of day names
Return type: array
Returns an array of day names (Sunday, Monday, etc.) based on the type provided. Options: long, short, abr. If no $day_type is provided (or if an invalid type is provided) this method will return the “abbreviated” style.
- adjust_date($month, $year)¶
Parameters: - $month (int) – Month
- $year (int) – Year
Returns: An associative array containing month and year
Return type: array
This method makes sure that you have a valid month/year. For example, if you submit 13 as the month, the year will increment and the month will become January:
print_r($this->calendar->adjust_date(13, 2014));
outputs:
Array ( [month] => '01' [year] => '2015' )
- get_total_days($month, $year)¶
Parameters: - $month (int) – Month
- $year (int) – Year
Returns: Count of days in the specified month
Return type: int
Total days in a given month:
echo $this->calendar->get_total_days(2, 2012); // 29
Note
This method is an alias for Date Helper function days_in_month().
- default_template()¶
Returns: An array of template values Return type: array Sets the default template. This method is used when you have not created your own template.
- parse_template()¶
Returns: CI_Calendar instance (method chaining) Return type: CI_Calendar Harvests the data within the template {pseudo-variables} used to display the calendar.