block_course_daterollover.php

<?php
  // This file is part of Moodle - http://moodle.org/
    //
    // Moodle 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 3 of the License, or
    // (at your option) any later version.
    //
    // Moodle is distributed in the hope that it will be useful,
    // but WITHOUT ANY WARRANTY; without even the implied warranty of
    // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    // GNU General Public License for more details.
    //
    // You should have received a copy of the GNU General Public License
    // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

    /**
     *  block_course_daterollover
     *
     *  This plugin adjust assignment date according to the course start date , it will set forward assignment items  by x number of days, which includes allowsubmissionfrom,
     *  due-date, cutoffdate, upcoming events, in a course through one centralized screen  
     *  rather than having to go into each individual assignment activity.
     *
     * @author      Tsedey Terefe <snort.test123@gmail.com>
     * @license     GNU General Public License version 3
     * @package     block
     * @subpackage  course_daterollover
     */

defined('MOODLE_INTERNAL') || die();

require_once($CFG->dirroot.'/blocks/course_daterollover/course_daterollover_form.php');

class block_course_daterollover extends block_base {




    public function init() {
        $this->title = get_string('pluginname', 'block_course_daterollover');
    }


    public function applicable_formats() {
        return array('course-view' => true,
                'all' => false);
    }

    public function allow_multiple() {
        return false;
    }



    public function get_content() {
        global $CFG, $COURSE, $SESSION, $DB, $PAGE;
        if ($this->content !== null) {
            return $this->content;
        }
        $this->content->text = '';
   $context=$PAGE->context;

$coursecontext = $context->get_course_context();
$courseid=$coursecontext->instanceid;

        if (has_capability('block/course_daterollover:changedate', $coursecontext)) {


           $url = new moodle_url('/blocks/course_daterollover/edit.php');
            $customdata = array('coursecontext' => $coursecontext);
            $mform = new course_daterollover_form($url->out(), $customdata);
            $form = $mform->display();
            $this->content->text .= $form;
        }

        $this->content->footer = '';
        return $this->content;
    }

  
    public function display_errors($errors) {
        $this->content->text .= html_writer::start_tag('div', array('class' => "errors"));
        foreach ($errors as $error) {
            $this->content->text .= $error.html_writer::empty_tag('br');
        }
        $this->content->text .= html_writer::end_tag('div');
    }
}