private function _prepare_sort()
{
global $Conf;
$this->default_sort_column = PaperColumn::lookup("id");
$this->sorters[0]->field = null;
if ($this->search->sorters) {
foreach ($this->search->sorters as $sorter) {
if ($sorter->type && ($field = PaperColumn::lookup($sorter->type)) && $field->prepare($this, PaperColumn::PREP_SORT) && $field->comparator) {
$sorter->field = $field;
} else {
if ($sorter->type) {
if ($this->contact->can_view_tags(null) && ($tagger = new Tagger()) && ($tag = $tagger->check($sorter->type)) && ($result = Dbl::qe("select paperId from PaperTag where tag=? limit 1", $tag)) && edb_nrows($result)) {
$this->search->warn("Unrecognized sort “" . htmlspecialchars($sorter->type) . "”. Did you mean “sort:#" . htmlspecialchars($sorter->type) . "”?");
} else {
$this->search->warn("Unrecognized sort “" . htmlspecialchars($sorter->type) . "”.");
}
continue;
}
}
ListSorter::push($this->sorters, $sorter);
}
if (count($this->sorters) > 1 && $this->sorters[0]->empty) {
array_shift($this->sorters);
}
}
if (get($this->sorters[0], "field")) {
/* all set */
} else {
if ($this->sorters[0]->type && ($c = PaperColumn::lookup($this->sorters[0]->type)) && $c->prepare($this, PaperColumn::PREP_SORT)) {
$this->sorters[0]->field = $c;
} else {
$this->sorters[0]->field = $this->default_sort_column;
}
}
$this->sorters[0]->type = $this->sorters[0]->field->name;
// set defaults
foreach ($this->sorters as $s) {
if ($s->reverse === null) {
$s->reverse = false;
}
if ($s->score === null) {
$s->score = ListSorter::default_score_sort();
}
}
}
