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[DATABASE] Update "modified" in Managed_DataObject instead of a DBMS trigger

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Instead of relying on the MariaDB's ON UPDATE CURRENT_TIMESTAMP trigger update
"modified" attributes in Managed_DataObject. Every raw query that needs
adjusting is adjusted, as they won't update "modified" automatically anymore.

The main goal behind this change is to fix "modified" updates on PostgreSQL.
This commit is contained in:
Alexei Sorokin
2020-07-27 19:10:33 +03:00
parent 341f3d0ea5
commit ec86de2bc4
17 changed files with 224 additions and 140 deletions
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40
classes/Managed_DataObject.php
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@@ -522,6 +522,25 @@ abstract class Managed_DataObject extends Memcached_DataObject
return $aliases;
}
/**
* Set the attribute defined as "timestamp" to CURRENT_TIMESTAMP.
* This is hooked in update() and updateWithKeys() to update "modified".
*
* @access private
* @return void
*/
private function updateAutoTimestamps(): void
{
$table = static::schemaDef();
foreach ($table['fields'] as $name => $col) {
if ($col['type'] === 'timestamp'
&& !array_key_exists('default', $col)
&& !isset($this->$name)) {
$this->$name = common_sql_now();
}
}
}
/**
* update() won't write key columns, so we have to do it ourselves.
* This also automatically calls "update" _before_ it sets the keys.
@@ -548,6 +567,10 @@ abstract class Managed_DataObject extends Memcached_DataObject
// do it in a transaction
$this->query('START TRANSACTION');
// ON UPDATE CURRENT_TIMESTAMP behaviour
// @fixme Should the value be reverted back if transaction failed?
$this->updateAutoTimestamps();
$parts = [];
foreach ($this->keys() as $k) {
$v = $this->table()[$k];
@@ -664,12 +687,25 @@ abstract class Managed_DataObject extends Memcached_DataObject
public function insert()
{
$this->onInsert();
return parent::insert();
$result = parent::insert();
// Make this object aware of the changed "modified" attribute.
// Sets it approximately to the same value as DEFAULT CURRENT_TIMESTAMP
// just did (@fixme).
if ($result) {
$this->updateAutoTimestamps();
}
return $result;
}
public function update($dataObject=false)
public function update($dataObject = false)
{
$this->onUpdate($dataObject);
// ON UPDATE CURRENT_TIMESTAMP behaviour
// @fixme Should the value be reverted back if transaction failed?
$this->updateAutoTimestamps();
return parent::update($dataObject);
}
}