function init()
{
parent::init();
$this->b = $this->join('library_borrowing.library_member_id');
$this->b->hasOne('Staff', 'verified_by')->sortable(true);
$this->b->addField('borrowed')->sortable(true);
$this->b->addField('is_returned')->sortable(true);
$this->b->addField('returned')->sortable(true);
$this->b->join('library_book')->addField('book_name', 'name')->sortable(true);
// Showing only if borrowed
//$this->addCondition('is_returned',false);
// We don't want anyone to accidentally insert into this model as it will impact both
// joined tables, so we create validation to avoid that.
$this->addHook('beforeInsert', function ($m) {
throw $m->exception('Do not add borrower directly');
});
}
