Support » Plugins » [Plugin: Google Calendar Feed Parser] Feature Request – No Events Returned

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  • justmattb


    This is what I did to get that working (be aware that I also modified the output format to meet my needs):

    Plugin Name: Google Calendar Feed Parser
    Plugin URI:
    Description: Parses a Google Calendar XML feed for display in the sidebar of your blog.
    Version: 0.3
    Author: Justin Bennett
    Author URI:
    /*  Copyright 2008  Justin M. Bennett  (email :
        This program is free software; you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation; either version 2 of the License, or
        (at your option) any later version.
        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        GNU General Public License for more details.
        You should have received a copy of the GNU General Public License
        along with this program; if not, write to the Free Software
        Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
    //Hook for adding admin menu
    add_action("admin_menu", "gcal_add_menus");
    function gcal_add_menus() {
      //add_submenu_page("settings.php", "Google Calendar Feed Parser", "Google Calendar", 10,
      //"gcal_parser", "gcal_display_menu");
      add_options_page("Google Calendar Feed Parser", "Google Calendar", 10, "gcal_admin", "gcal_display_menu");
     * gcal_display_menu - Displays the admin menu
    function gcal_display_menu() {
    $option = get_option('gcal_static_url_option');
    <form action="options.php" method="post">
    <div class="wrap">
    	<h2>Google Calendar Feed Parser Settings</h2>
    	<?php wp_nonce_field('update-options'); ?>
    	<p class="submit"><input type="submit" name="Submit" value="Save Changes" /></p>
    	<table class="form-table">
    			<th scope="row" valign="top">Feed URL:</th>
    			<input type="text" name="gcal_feed_url" value="<?php echo get_option('gcal_feed_url'); ?>" style="width: 600px" />
    			<br />The URL for the Google Calendar Feed. Don't specify a "max-results" parameter in your query string,
    			instead, set it below.</td>
    			<th scope="row" valign="top">Static URL?:</th>
    			<select name="gcal_static_url_option">
    				<option value="0" <?php echo ($option == 0) ? 'selected="selected"' : ''; ?>>No</option>
    				<option value="1" <?php echo ($option == 1) ? 'selected="selected"' : ''; ?>>Yes</option>
    			<input type="text" name="gcal_static_url" value="<?php echo get_option('gcal_static_url'); ?>" style="width: 300px" />
    			<br />If set to "Yes", the plugin will link to the static url you provide for each calendar event.
    				  If set to "No", the plugin will link to the event's URL from the feed.</td>
    			<th scope="row" valign="top">Max Results:</th>
    			<input type="text" name="gcal_max_results" value="<?php echo get_option('gcal_max_results'); ?>" style="width: 20px" />
    			<br />The maximum number of events to retrieve and display.  If left blank, the default is 4.</td>
    			<th scope="row" valign="top">Timezone offset:</th>
    			<input type="text" name="gcal_timezone_offset" value="<?php echo get_option('gcal_timezone_offset'); ?>" style="width: 70px" /> seconds
    			<br />Offset to apply to start and end times from XML feed (default: 7200 seconds).  Only change if you're having problems with times not displaying correctly.</td>
    			<th scope="row" valign="top">No Events Message:</th>
    			<input type="text" name="gcal_message" value="<?php echo get_option('gcal_message'); ?>" style="width: 600px" />
    			<br />Message to display if there are no events returned.</td>
    	<input type="hidden" name="action" value="update" />
    	<input type="hidden" name="page_options" value="gcal_feed_url,gcal_static_url_option,gcal_static_url,gcal_max_results,gcal_timezone_offset,gcal_message" />
    	<p class="submit">
    	<input type="submit" name="Submit" class="button" value="Save Changes" />
     * gcal_parse_feed - Main function parses and displays the calendar feed
    function gcal_parse_feed() {
    	$feed_url = get_option('gcal_feed_url');
    	$feed_url .= '&max-results=' . (( get_option('gcal_max_results') == '' ) ? '4' : get_option('gcal_max_results'));
    	$xmlstr = wp_remote_fopen($feed_url);
    	$static_url = get_option('gcal_static_url_option');
    	$xml = new SimpleXMLElement($xmlstr);
    	$count = 0;
    	echo '<ul>';
    	foreach($xml->entry as $entry) {
    		$count = $count + 1;
    		echo '<li>';
    		$gd = $entry->children('');
    		$event_link = $entry->link->attributes()->href;
    		if ( $static_url ) {
    			echo '<strong><a href="' . get_option('gcal_static_url') . '">' . $entry->title . "</a></strong>\n";
    		else {
    			echo '<strong><a href="' . $event_link  . '" target="_blank">' . $entry->title . "</a></strong>\n";
    		if (($offset = get_option('gcal_timezone_offset')) == '')
    		   $offset = 7200;
    		$start = date("l, F j @ g:ia", strtotime($gd->when->attributes()->startTime) + $offset);
    		$end = date("g:ia", strtotime($gd->when->attributes()->endTime) + $offset);
    		echo "<p class='event_time'>$start</p></li>";
    	if ($count == 0) {
    		echo '<li>'.get_option('gcal_message').'</li>';
    	echo '</ul>';


    This is a great feature and one that I certainly plan to add in an upcoming release of the plugin. I’m hoping to have some time to dedicate to working on this sometime in the next few weeks. If you have any other input, feel free to post here, leave a comment on my blog or shoot me an email.

    Justin Bennett

Viewing 2 replies - 1 through 2 (of 2 total)
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