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upgrade fix for file URLs longer than 191 chars

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This commit is contained in:
Mikael Nordfeldth 2015-05-27 21:31:29 +02:00
parent 0e6b80ded3
commit cd0b70dbc1
1 changed files with 31 additions and 0 deletions
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31
classes/File.php
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@ -610,6 +610,37 @@ class File extends Managed_DataObject
return;
}
echo "\nFound old $table table, upgrading it to contain 'urlhash' field...";
$file = new File();
$file->query(sprintf('SELECT id, LEFT(url, 191) AS shortenedurl, COUNT(*) AS c FROM %1$s WHERE LENGTH(url)>191 GROUP BY shortenedurl HAVING c > 1', $schema->quoteIdentifier($table)));
print "\nFound {$file->N} URLs with too long entries in file table\n";
while ($file->fetch()) {
// We've got a URL that is too long for our future file table
// so we'll cut it. We could save the original URL, but there is
// no guarantee it is complete anyway since the previous max was 255 chars.
$dupfile = new File();
// First we find file entries that would be duplicates of this when shortened
// ... and we'll just throw the dupes out the window for now! It's already so borken.
$dupfile->query(sprintf('SELECT * FROM file WHERE LEFT(url, 191) = "%1$s"', $file->shortenedurl));
// Leave one of the URLs in the database by using ->find(true) (fetches first entry)
if ($dupfile->find(true)) {
print "\nShortening url entry for $table id: {$file->id} [";
$orig = clone($dupfile);
$dupfile->url = $file->shortenedurl; // make sure it's only 191 chars from now on
$dupfile->update($orig);
print "\nDeleting duplicate entries of too long URL on $table id: {$file->id} [";
// only start deleting with this fetch.
while($dupfile->fetch()) {
print ".";
$dupfile->delete();
}
print "]\n";
} else {
print "\nWarning! URL suddenly disappeared from database: {$file->url}\n";
}
}
echo "\n...now running hacky pre-schemaupdate change for $table:";
// We have to create a urlhash that is _not_ the primary key,
// transfer data and THEN run checkSchema
$schemadef['fields']['urlhash'] = array (