public function test_guess_tag()
{
global $DB;
$user = $this->getDataGenerator()->create_user();
$this->setUser($user);
$tag1 = $this->getDataGenerator()->create_tag(array('name' => 'Cat'));
$tc = core_tag_collection::create((object) array('name' => 'tagcoll'));
$tag2 = $this->getDataGenerator()->create_tag(array('name' => 'Cat', 'tagcollid' => $tc->id));
$this->assertEquals(2, count($DB->get_records('tag')));
$this->assertEquals(2, count(core_tag_tag::guess_by_name('Cat')));
$this->assertEquals(core_tag_collection::get_default(), core_tag_tag::get_by_name(0, 'Cat')->tagcollid);
}
require_once 'edit_form.php';
$tagid = optional_param('id', 0, PARAM_INT);
$tagname = optional_param('tag', '', PARAM_TAG);
$returnurl = optional_param('returnurl', '', PARAM_LOCALURL);
require_login();
if (empty($CFG->usetags)) {
print_error('tagsaredisabled', 'tag');
}
//Editing a tag requires moodle/tag:edit capability
$systemcontext = context_system::instance();
require_capability('moodle/tag:edit', $systemcontext);
if ($tagname) {
$tagcollid = optional_param('tc', 0, PARAM_INT);
if (!$tagcollid) {
// Tag name specified but tag collection was not. Try to guess it.
$tags = core_tag_tag::guess_by_name($tagname, '*');
if (count($tags) > 1) {
// This tag was found in more than one collection, redirect to search.
redirect(new moodle_url('/tag/search.php', array('tag' => $tagname)));
} else {
if (count($tags) == 1) {
$tag = reset($tags);
}
}
} else {
if (!($tag = core_tag_tag::get_by_name($tagcollid, $tagname, '*'))) {
redirect(new moodle_url('/tag/search.php', array('tagcollid' => $tagcollid)));
}
}
} else {
if ($tagid) {
