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refactor(web/group/assignment): less db queries
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Baoshuo Ren 2022-10-22 07:46:42 +08:00
parent 3cab411f4d
commit 49994cdc65
Signed by: baoshuo
GPG Key ID: 00CB9680AB29F51A
1 changed files with 19 additions and 16 deletions
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37
web/app/controllers/group_assignment.php
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@ -52,7 +52,7 @@
$usernames = []; $usernames = [];
$n_users = count($users); $n_users = count($users);
$n_problems = count($problems); $n_problems = count($problems);
$submission_end_time = min(new DateTime(), DateTime::createFromFormat('Y-m-d H:i:s', $assignment['end_time']))->getTimestamp(); $submission_end_time = min(new DateTime(), DateTime::createFromFormat('Y-m-d H:i:s', $assignment['end_time']));
foreach ($problems as $problem) { foreach ($problems as $problem) {
$problem_ids[] = $problem['problem_id']; $problem_ids[] = $problem['problem_id'];
@ -64,34 +64,37 @@
$usernames[] = $user['username']; $usernames[] = $user['username'];
} }
// standings: rank => [user => [username, realname], scores[], rank] // standings: rank => [total_score, user => [username, realname], scores[]]
$standings = []; $standings = [];
foreach ($usernames as $username) { foreach ($usernames as $username) {
$user = queryUser($username); $user = queryUser($username);
$row = ['total_score' => 0]; $row = ['total_score' => 0];
$scores = [];
$row['user'] = [ $row['user'] = [
'username' => $user['username'], 'username' => $user['username'],
'realname' => $user['realname'], 'realname' => $user['realname'],
]; ];
foreach ($problem_ids as $problem_id) { $cond = "submitter = '{$user['username']}' AND unix_timestamp(submit_time) <= " . $submission_end_time->getTimestamp();
$cond = "submitter = '{$user['username']}' AND problem_id = $problem_id AND unix_timestamp(submit_time) <= $submission_end_time"; $cond_problem = "problem_id IN (".implode(',', $problem_ids).")";
$max_score_query = DB::selectFirst("SELECT MAX(score) AS score FROM submissions WHERE $cond"); $query = DB::query("SELECT MAX(id) as id, problem_id, MAX(score) as score FROM submissions WHERE (problem_id, score) IN (SELECT problem_id, MAX(score) FROM submissions WHERE $cond AND $cond_problem GROUP BY problem_id) AND $cond GROUP BY problem_id");
if ($max_score_query) {
$max_score = $max_score_query['score'];
} else {
$max_score = 0;
}
$submission = DB::selectFirst("SELECT id, score FROM submissions WHERE $cond AND score = $max_score ORDER BY submit_time DESC LIMIT 1");
if ($submission) { while ($_row = DB::fetch($query)) {
$row['scores'][] = [ $scores[$_row['problem_id']] = [
'submission_id' => $submission['id'], 'submission_id' => $_row['id'],
'score' => intval($submission['score']), 'score' => $_row['score'],
]; ];
$row['total_score'] += $submission['score']; }
foreach ($problem_ids as $problem_id) {
if ($scores[$problem_id]) {
$row['scores'][] = [
'submission_id' => $scores[$problem_id]['submission_id'],
'score' => intval($scores[$problem_id]['score']),
];
$row['total_score'] += $scores[$problem_id]['score'];
} else { } else {
$row['scores'][] = null; $row['scores'][] = null;
} }
@ -169,7 +172,7 @@ $('#standings').long_table(
var html = ''; var html = '';
html += '<div class="card-header bg-transparent text-muted text-start small">' + html += '<div class="card-header bg-transparent text-muted text-start small">' +
'成绩统计截止时间：<?= $submission_end_time ?>' + '成绩统计截止时间：<?= $submission_end_time->format('Y-m-d H:m:s') ?>' +
'</div>'; '</div>';
return html; return html;