Postgres: could not open file "/etc/ssl/certs/ssl-cert-snakeoil.pem"

Hello,

Today I had a problem starting PostgreSQL server. I saw this error:

* The PostgreSQL server failed to start. Please check the log output:
CEST FATAL:  could not open file "/etc/ssl/certs/ssl-cert-snakeoil.pem"

To solve it I did these actions:

cd /etc/ssl/certs/
chown postgres ssl-cert-snakeoil.pem
chmod 777 ssl-cert-snakeoil.pem

cd /etc/ssl/private
chown postgres ssl-cert-snakeoil.key
chmod 700 ssl-cert-snakeoil.key

Best regards!!!

Essential: List of categories as a tree

Essential is a fancy moodle theme that has a lot of settings... One of them is use icons in categories or not. If you select in Category Icons -> Enable category icons : Yes, you will see categories as folders:

If you select "No", you will see categories as a tree:

Best regards,
Iban Cardona.

Using fputcsv without enclosure

Hi,

If you want to use the PHP function fputcsv in order to create a CSV file using no character as enclosure, you can write:

$list = array (
    array('aaa', 'bbb', 'ccc', 'dddd')
);

$fp = fopen('file.csv', 'w');

foreach ($list as $fields) {
    fputcsv($fp, $fields, ';', '');
}

But a warning will appear:

PHP Warning:  fputcsv(): enclosure must be a character

To avoid it, you need to write:

$list = array (
    array('aaa', 'bbb', 'ccc', 'dddd')
);

$fp = fopen('file.csv', 'w');

foreach ($list as $fields) {
    fputcsv($fp, $fields, ';', chr(0));
}

Best regards,
Iban Cardona.

Use image repository in theme settings inside html editor

Hi,

I'm using Essential (version 2.7) theme in moodle. In settings section, I'd like to use html editor with the option to upload images. My solution:

In settings.php file:

global $CFG;
require_once($CFG->dirroot.'/local/icsbcn/lib/admin_setting_confightmleditor_icsbcn.class.php');
$setting = new admin_setting_confightmleditor_icsbcn($name, $title, $description, $default);

In admin_setting_confightmleditor_icsbcn.class.php file:

<?php
global $CFG;
require_once($CFG->libdir.'/adminlib.php');
require_once($CFG->libdir.'/filelib.php');

/**
 * General text area with html editor.
 */
class admin_setting_confightmleditor_icsbcn extends admin_setting_configtext {
    private $rows;
    private $cols;
    private $options;

    /**
     * @param string $name
     * @param string $visiblename
     * @param string $description
     * @param mixed $defaultsetting string or array
     * @param mixed $paramtype
     */
    public function __construct($name, $visiblename, $description, $defaultsetting, $paramtype=PARAM_RAW, $cols='60', $rows='8') {
        $this->rows = $rows;
        $this->cols = $cols;
        parent::__construct($name, $visiblename, $description, $defaultsetting, $paramtype);
        editors_head_setup();
    }

    private function get_options() {
        global $USER;

        $ctx = context_user::instance($USER->id);
        $default = array();
        $default['noclean'] = false;
        $default['context'] = $ctx;
        $default['maxbytes'] = 0;
        $default['maxfiles'] = -1;
        $default['forcehttps'] = false;
        $default['subdirs'] = false;
        $default['changeformat'] = 0;
        $default['areamaxbytes'] = FILE_AREA_MAX_BYTES_UNLIMITED;
        $default['return_types'] = (FILE_INTERNAL | FILE_EXTERNAL);

        return $default;
    }

    /**
     * Returns an XHTML string for the editor
     *
     * @param string $data
     * @param string $query
     * @return string XHTML string for the editor
     */
    public function output_html($data, $query='') {
        global $USER;

        $default = $this->get_defaultsetting();

        $defaultinfo = $default;
        if (!is_null($default) and $default !== '') {
            $defaultinfo = "\n".$default;
        }

        $ctx = context_user::instance($USER->id);
        $editor = editors_get_preferred_editor(FORMAT_HTML);
        $options = $this->get_options();
        $draftitemid = file_get_unused_draft_itemid();
        $component = is_null($this->plugin) ? 'core' : $this->plugin;
        $data = file_prepare_draft_area($draftitemid, $options['context']->id, $component, $this->get_full_name().'_draftitemid', $draftitemid, $options, $data);
        
        $fpoptions = array();
        $args = new stdClass();
        // need these three to filter repositories list
        $args->accepted_types = array('web_image');
        $args->return_types = $options['return_types'];
        $args->context = $ctx;
        $args->env = 'filepicker';
        // advimage plugin
        $image_options = initialise_filepicker($args);
        $image_options->context = $ctx;
        $image_options->client_id = uniqid();
        $image_options->maxbytes = $options['maxbytes'];
        $image_options->areamaxbytes = $options['areamaxbytes'];
        $image_options->env = 'editor';
        $image_options->itemid = $draftitemid;

        // moodlemedia plugin
        $args->accepted_types = array('video', 'audio');
        $media_options = initialise_filepicker($args);
        $media_options->context = $ctx;
        $media_options->client_id = uniqid();
        $media_options->maxbytes  = $options['maxbytes'];
        $media_options->areamaxbytes  = $options['areamaxbytes'];
        $media_options->env = 'editor';
        $media_options->itemid = $draftitemid;

        // advlink plugin
        $args->accepted_types = '*';
        $link_options = initialise_filepicker($args);
        $link_options->context = $ctx;
        $link_options->client_id = uniqid();
        $link_options->maxbytes  = $options['maxbytes'];
        $link_options->areamaxbytes  = $options['areamaxbytes'];
        $link_options->env = 'editor';
        $link_options->itemid = $draftitemid;

        $fpoptions['image'] = $image_options;
        $fpoptions['media'] = $media_options;
        $fpoptions['link'] = $link_options;
        
        $editor->use_editor($this->get_id(), $options, $fpoptions);

        return format_admin_setting($this, $this->visiblename,
        '<div class="form-textarea"><textarea rows="'. $this->rows .'" cols="'. $this->cols .'" id="'. $this->get_id() .'" name="'. $this->get_full_name() .'" spellcheck="true">'. s($data) .'</textarea></div>
        <input value="'.$draftitemid.'" name="'.$this->get_full_name().'_draftitemid" type="hidden" />',
        $this->description, true, '', $defaultinfo, $query);
    }

    public function write_setting($data) {
        global $CFG;

        if ($this->paramtype === PARAM_INT and $data === '') {
        // do not complain if '' used instead of 0
            $data = 0;
        }
        // $data is a string
        $validated = $this->validate($data);
        if ($validated !== true) {
            return $validated;
        }

        $options = $this->get_options();
        $fs = get_file_storage();
        $component = is_null($this->plugin) ? 'core' : $this->plugin;
        $wwwroot = $CFG->wwwroot;
        if ($options['forcehttps']) {
            $wwwroot = str_replace('http://', 'https://', $wwwroot);
        }

        $draftitemid = $_REQUEST[$this->get_full_name().'_draftitemid'];
        $draftfiles = $fs->get_area_files($options['context']->id, 'user', 'draft', $draftitemid, 'id');
        foreach ($draftfiles as $file) {
            if (!$file->is_directory()) {
                $strToSearch = "$wwwroot/draftfile.php/".$options['context']->id."/user/draft/$draftitemid/".$file->get_filename();
                if (stripos($data, $strToSearch) !== false) {
                    $file_record = array(
                        'contextid' => context_system::instance()->id,
                        'component' => $component,
                        'filearea' => 'icsbcnmarketingimages',
                        'itemid' => 0,
                        'timemodified' => time()
                    );
                    $newfile = $fs->create_file_from_storedfile($file_record, $file);
                    $url = moodle_url::make_pluginfile_url($newfile->get_contextid(), $newfile->get_component(), $newfile->get_filearea(), $newfile->get_itemid(), $newfile->get_filepath(), $newfile->get_filename());
                    $data = str_ireplace($strToSearch, $url, $data);
                }
            }
        }
        
        return ($this->config_write($this->name, $data) ? '' : get_string('errorsetting', 'admin'));
    }
}

In theme/icsbcn/lib.php:

I added these lines in function theme_icsbcn_pluginfile:
else if ($filearea === 'icsbcnmarketingimages') { 
            return $theme->setting_file_serve($filearea, $args, $forcedownload, $options);
        }

Best regards!
Iban Cardona.

Easy clock with Javascript (jQuery)

Hello,

An easy and fast way to develope a clock that is updated every minute:

<div class="clock">
<i class="fa fa-clock-o"> </i><span>15:51</span><script type="text/javascript">
var intervalclock = 0;
function startClock() {
  setTimeout(function() {
    print_clock();
    intervalclock = 60;
    setInterval(function() {
      print_clock();
    }, intervalclock * 1000);
  }, intervalclock * 1000);
}
    
function print_clock() {
  var now = new Date();
  var hour = now.getHours();
  var minute = now.getMinutes();
  if (minute < 10) { minute = "0" + minute; };
  var timeString = hour + ':' + minute;
  $('.clock\ > span').text(timeString);
}
    
$(window).load(function() {
  var timeclock = new Date();
  intervalclock = 60 - timeclock.getSeconds();
  if(intervalclock == 60) {
    intervalclock = 0;
  }
  startClock();
});
</script>
</div>

Best regards!

Moodle: Number of courses in which a user is enrolled

Hello,

Moodle is a software designed to create online courses. You can add a lot of tailor-made plugins.

One of the most interesting info that would be interesting could be... The number of courses in which a user is enrolled. We can know it by (tested with version 2.6.2):

global $DB;
$sql_count = 'SELECT COUNT(c.id)
FROM mdl_course AS c
JOIN mdl_context AS ct ON c.id = ct.instanceid
JOIN mdl_role_assignments AS ra ON ra.contextid = ct.id
JOIN mdl_user AS u ON u.id = ra.userid
JOIN mdl_role AS r ON r.id = ra.roleid
WHERE u.id = ?';
$courses_count = $DB->count_records_sql($sql_count, array($idUser));

Regards!

tt_news: Modify query to database

tt_news is an extension of TYPO3 designed to publish news in our website. It's a very popular extension and it allows publish and manage news about our company, association, etc. You can find extension manual here.

Suppose that we have our own extension with our own plugins and we want to indicate that in the news list we only want news with ID greater than 100... So we should use a hook that is prepared for the extension in order to modify the database query.

In this example we used TYPO3 4.4.4 and tt_news 3.0.1. Files to modify are:
ext_localconf.php

if (TYPO3_MODE == 'FE')  { require_once(t3lib_extMgm::extPath('user_t3_test').'user_t3_test_selectHook.php'); }
$TYPO3_CONF_VARS['EXTCONF']['tt_news']['selectConfHook'][] = 'user_t3_test_selectHook';

user_t3_test_selectHook.php

class user_t3_test_selectHook {
public function processSelectConfHook(&$parentObject, $selectConf) {
$selectConf['where'] .= ' AND uid > 100 ';
return $selectConf;
}

I hope you find it useful! Regards!