General developer forum

Hello coders!

I hope your coding goes well. I have a problem with posting a Moodle form. I have tried for some time to get it to work and the "Cancel" button works just fine but the $mform->get_data() with the blue button "Save changes" doesn't seem to work at all though it seems that I'm doing it by the guide. It's a local plugin with the folder name "datfc" and it's being run on Moodle 2.8.5 on a XAMPP 1.8.2 server which contains Apache 2.4.4, MySQL 5.5.32, PHP 5.4.25 among other programs. The variable $courseid is declared earlier in the "index.php".

index.php
...
$usertimezone=$USER->timezone;
$customdata=array('courseid'=>$courseid,'usertimezone'=>$usertimezone);
$mform=new datfc_form(null,$customdata);
//Form processing and displaying is done here
    if ($mform->is_cancelled()){
        echo 'Cancel works!';
    }
    else if ($formdata=$mform->get_data()){
        echo 'The function $mform->get_data() works.';
    }
    
    //Print the header.
    echo $OUTPUT->header();
    echo $OUTPUT->heading('Course Dates Table Overview');
    
    local_datfc_display_course_start_date($courseid,$usertimezone);
    local_datfc_display_assignment_dates($courseid,$usertimezone);
    local_datfc_display_quiz_dates($courseid,$usertimezone);
    //displays the form
    $mform->display();
    //Print the footer.
    echo $OUTPUT->footer();
...
end of index.php

datfc_form.php
...
$mform=$this->_form;
        
        //Remove before sending in.
        $mform->disable_form_change_checker();
        
        $customdataarray=$this->_customdata;
        $courseid=$customdataarray['courseid'];
        
        $mform->addElement('header','toolselectheader',get_string('toolselectheader','local_datfc'));
        
        $tooloptions=array('1'=>'Course Date Rollover','2'=>'Course Date Table Adjustment');
        $mform->addElement('select','toolselect',get_string('toolselect','local_datfc'),$tooloptions);
        $mform->addHelpButton('toolselect','toolselect','local_datfc');
        
        $mform->addElement('header', 'rolloverheader', get_string('daterollovertextwithvariableheader', 'local_datfc'));
        
        $sqlcoursestartdate=$DB->get_fieldset_select('course','startdate','id=?',array($courseid));
        
        $defaulttimezone=date_default_timezone_get();
        date_default_timezone_set('Europe/London');
        
        $coursestartdate=date("Y-m-d",$sqlcoursestartdate[0]);
        
        date_default_timezone_set($defaulttimezone);    
        
        $startdatewithvariable=get_string('daterollovertextwithvariableshort','local_datfc',$coursestartdate);
        
        $allowedtimespan=array('startyear'=>2015,'stopyear'=>2030,'timezone'=>99,'optional'=>false);
        
        $mform->addElement('date_selector','rolloverdate',$startdatewithvariable,$allowedtimespan);
        $mform->addHelpButton('rolloverdate','daterollovertextwithoutvariableshort','local_datfc');
        
        $mform->addElement('hidden','courseid',$courseid);
        $mform->setType('courseid',PARAM_INT);
        
        $this->add_action_buttons();
...
end of datfc_form.php

I also have another question, should the form instantiation be made only with an equal sign or with an ampersand sign and an equal sign?

$mform=$this->_form;

$mform&=$this->_form;