/**
* constructor
*
* @param object $field record from "data_fields" table
* @param object $data record from "data" table
* @param object $cm record from "course_modules" table
*/
function __construct($field = 0, $data = 0, $cm = 0)
{
global $CFG, $DB, $datarecord;
// set up this field in the normal way
parent::__construct($field, $data, $cm);
$subparam = $this->subparam;
$accessparam = $this->accessparam;
$disabledifparam = $this->disabledifparam;
$displaytextparam = $this->displaytextparam;
$sortorderparam = $this->sortorderparam;
$this->is_special_field = $this->field->name == 'unapprove' || $this->field->name == 'fixdisabledfields' || $this->field->name == 'setdefaultvalues';
// set view and edit permissions for this user
if ($this->field && $this->is_special_field) {
// special fields are not viewable or editable by anyone
$this->is_editable = false;
$this->is_viewable = false;
// field-specific processing for new fields
if (self::is_new_record()) {
switch ($this->field->name) {
case 'fixdisabledfields':
// prevent "missing property" error in data/lib.php
// caused by disabled fields in form
if (isset($datarecord) && is_object($datarecord)) {
$select = 'dataid = ?';
$params = array('field_', $this->data->id);
$name = $DB->sql_concat('?', 'id') . ' AS formfieldname';
if ($names = $DB->get_records_select_menu('data_fields', $select, $params, 'id', "id, {$name}")) {
foreach ($names as $name) {
if (!property_exists($datarecord, $name)) {
$datarecord->{$name} = null;
}
}
}
}
break;
case 'unapprove':
// By default records added by teachers and admins
// have their "approved" flag set to "1".
// We want to detect this situation, so that we can
// override it later, in the update_content() method
$this->unapprove = has_capability('mod/data:approve', $this->context);
break;
case 'setdefaultvalues':
// setting this flag to true has two effects:
// (1) values from the user profile are inserted into the ADD form
// (2) any user profile fields that are empty will be updated from
// values in the ADD form
$this->setdefaultvalues = true;
break;
}
}
} else {
if (has_capability('mod/data:managetemplates', $this->context)) {
$this->is_editable = true;
$this->is_viewable = true;
} else {
if (isset($field->{$accessparam})) {
$this->is_viewable = $field->{$accessparam} >= self::ACCESS_VIEW;
$this->is_editable = $field->{$accessparam} >= self::ACCESS_EDIT;
}
}
}
// fetch the subfield if there is one
if (isset($field->{$subparam})) {
$subtype = $field->{$subparam};
$subclass = 'data_field_' . $subtype;
$subfolder = $CFG->dirroot . '/mod/data/field/' . $subtype;
$filepath = $subfolder . '/field.class.php';
if (file_exists($filepath)) {
require_once $filepath;
$this->subtype = $subtype;
$this->subclass = $subclass;
$this->subfolder = $subfolder;
$this->subfield = new $subclass($field, $data, $cm);
}
}
}
