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Preparing for database constraints

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This commit is contained in:
Mikael Nordfeldth 2016-03-29 14:10:57 +02:00
parent e933ff9510
commit 3a71ec89ca
2 changed files with 48 additions and 3 deletions
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6
QvitterPlugin.php
View File

@ -150,6 +150,12 @@ class QvitterPlugin extends Plugin {
return true;
}
public function onBeforePluginCheckSchema()
{
QvitterNotification::beforeSchemaUpdate();
return true;
}
// route/reroute urls
public function onRouterInitialized($m)
{

45
classes/QvitterNotification.php
View File

@ -19,8 +19,8 @@ class QvitterNotification extends Managed_DataObject
return array(
'fields' => array(
'id' => array('type' => 'serial', 'not null' => true),
'to_profile_id' => array('type' => 'int', 'description' => 'the profile being notified'),
'from_profile_id' => array('type' => 'int', 'description' => 'the profile that is notifying'),
'to_profile_id' => array('type' => 'int', 'not null'=>true, 'description' => 'the profile being notified'),
'from_profile_id' => array('type' => 'int', 'not null'=>true, 'description' => 'the profile that is notifying'),
'ntype' => array('type' => 'varchar', 'length' => 7, 'description' => 'reply, like, mention or follow'),
'notice_id' => array('type' => 'int', 'description' => 'id for the reply or mention or notice being faved'),
'is_seen' => array('type' => 'int', 'size' => 'tiny', 'default' => 0, 'description' => 'if the notification has been seen'),
@ -30,7 +30,8 @@ class QvitterNotification extends Managed_DataObject
'foreign keys' => array(
'qvitternotification_to_profile_id_fkey' => array('profile', array('to_profile_id' => 'id')),
'qvitternotification_from_profile_id_fkey' => array('profile', array('from_profile_id' => 'id')),
'qvitternotification_notice_id_fkey' => array('notice', array('notice_id' => 'id')),
// removing this because there can be rows without related notice_id
//'qvitternotification_notice_id_fkey' => array('notice', array('notice_id' => 'id')),
),
'indexes' => array(
'qvitternotification_created_idx' => array('created'),
@ -54,5 +55,43 @@ class QvitterNotification extends Managed_DataObject
return $result;
}
static public function beforeSchemaUpdate()
{
printfnq("\nEnsuring no NULL values for foreign keys in QvitterNotification...");
// Because constraints to profile and notice table assume not null, we must
// remove any values in these columns that are NULL (or 0), because they
// are invalid anyway.
$qn = new QvitterNotification();
foreach (['to_profile_id', 'from_profile_id'] as $field) {
$qn->whereAdd(sprintf('%s is NULL', $field), 'OR');
$qn->whereAdd(sprintf('%s = 0', $field), 'OR');
}
if ($qn->find()) {
printfnq(" removing {$qn->N} rows...");
while ($qn->fetch()) {
$qn->delete();
}
}
printfnq("DONE.\n");
printfnq("Ensuring no dead profile or notice IDs are stored in QvitterNotification...");
// We could probably build a single statement for this but I just want it done...
// or maybe be smart and take it directly from our defined 'foreign keys'... but oh well!
$constraints = ['to_profile_id' => 'profile:id',
'from_profile_id' => 'profile:id'];
foreach ($constraints as $field=>$foreign) {
$qn = new QvitterNotification();
$qn->selectAdd();
$qn->selectAdd('qvitternotification.id'); // to avoid confusion with profile.id, also we only need the primary key
$qn->joinAdd([$field, $foreign], 'LEFT');
$qn->whereAdd(str_replace(':', '.', $foreign).' IS NULL');
if ($qn->find()) {
printfnq("\n{$field}: {$qn->N} rows...");
while ($qn->fetch()) {
$qn->delete();
}
}
}
printfnq("DONE.\n");
}
}