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ManyManyActiveRecord.php
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ManyManyActiveRecord.php
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<?php
class ManyManyActiveRecord extends CActiveRecord
{
/**
* @param $relation
* @return array with table name and 2 keys of the related tables
* @throws CException
*/
protected function verifyManyManyRelation($relation) {
//check if primaryKey correct
if (is_array($this->primaryKey))
throw new CException('ManyManyActiveRecord can\'t work with composite primary key');
//check if relation correct
if (is_null($this->primaryKey))
throw new CException($relation->name.' error, primary key is null');
//check if model have primaryKey
if ($this->isNewRecord)
throw new CException($relation->name.' error, save model first');
//check if relation correct
if (!is_object($relation) || get_class($relation) != 'CManyManyRelation')
throw new CException($relation->name.' is not exist or not belongs to CManyManyRelation class');
//match tablename(model key, foreign table key)
preg_match_all('/([^()]*)\(([^,]*),([^)]*)\)/i', $relation->foreignKey, $matches);
return $matches;
}
/**
* Create tables relation records on ManyMany relation with deletion old ones
* @param string $relationName the name of the relation, needs to be updated
* @param array $relationData array of related keys of second table to be connected with first table
* @param array $additionalFields
* @param bool $useTransaction
* @throws CException
*/
public function setRelationRecords($relationName, $relationData, $additionalFields = array(), $useTransaction = false)
{
//get correct relation from model relation defenition
$relation = $this->getActiveRelation($relationName);
$matches = $this->verifyManyManyRelation($relation);
$table = $matches[1][0];
$this_key = $matches[2][0];
$another_key = $matches[3][0];
if ($useTransaction)
$transaction = Yii::app()->db->beginTransaction();
try {
//execute delete old relations statement
$sql = "delete from {$table} WHERE $this_key = '{$this->primaryKey}'";
$command = Yii::app()->db->createCommand($sql);
$command->execute();
//execute insert new relations statement
if (count($additionalFields) > 0) {
foreach($additionalFields as $key=>$value) {
$keys[] = $key;
}
$insert_sql = "insert into {$table} ($this_key, $another_key, ".implode(',', $keys).") VALUES ";
}
else
$insert_sql = "insert into {$table} ($this_key, $another_key) VALUES ";
$com = Yii::app()->db->createCommand();
$c = count($relationData);
$sql = array();
for ($i = 0; $i<$c; $i++) {
if (count($additionalFields) > 0) {
foreach($additionalFields as $key=>$value) {
$values[] = $value;
}
$sql[] = '('.$this->primaryKey.', '.$relationData[$i].", '".implode("', '", $values)."')";
}
else
$sql[] = '('.$this->primaryKey.', '.$relationData[$i].')';
//executes insert each 1000 rows or last time
if (($i+1 % 1000) == 0 || $i == $c-1) {
$com->setText($insert_sql.implode(', ', $sql));
$com->execute();
$com = Yii::app()->db->createCommand();
$sql = array();
}
}
if ($useTransaction)
$transaction->commit();
}
catch(Exception $e) {
if ($useTransaction)
$transaction->rollback();
throw new CException($e->getMessage());
}
}
/**
* Create new tables relation records on ManyMany relation without deletion old ones
* @param string $relationName the name of the relation, needs to be updated
* @param $relationData array of related keys of second table to be connected with first table
* @param array $additionalFields
*/
public function addRelationRecords($relationName, $relationData, $additionalFields = array())
{
//get correct relation from model relation definition
$relation = $this->getActiveRelation($relationName);
$matches = $this->verifyManyManyRelation($relation);
$table = $matches[1][0];
$this_key = $matches[2][0];
$another_key = $matches[3][0];
//execute insert new relations statement
if (count($additionalFields) > 0) {
foreach($additionalFields as $key=>$value) {
$keys[] = $key;
}
$insert_sql = "insert into {$table} ($this_key, $another_key, ".implode(',', $keys).") VALUES ";
}
else
$insert_sql = "insert into {$table} ($this_key, $another_key) VALUES ";
$com = Yii::app()->db->createCommand();
$c = count($relationData);
$sql = array();
for ($i = 0; $i<$c; $i++) {
if (count($additionalFields) > 0) {
foreach($additionalFields as $key=>$value) {
$values[] = $value;
}
$sql[] = '('.$this->primaryKey.', '.$relationData[$i].", '".implode("', '", $values)."')";
}
else
$sql[] = '('.$this->primaryKey.', '.$relationData[$i].')';
//executes insert each 1000 rows or last time
if (($i+1 % 1000) == 0 || $i == $c-1) {
$com->setText($insert_sql.implode(', ', $sql));
$com->execute();
$sql = array();
}
}
}
/**
* Remove tables relation records on ManyMany relation
* @param string $relationName the name of the relation, needs to be updated
* @param array $keys array of keys to remove
*/
public function removeRelationRecords($relationName, $keys)
{
//get correct relation from model relation defenition
$relation = $this->getActiveRelation($relationName);
$matches = $this->verifyManyManyRelation($relation);
$table = $matches[1][0];
$this_key = $matches[2][0];
$another_key = $matches[3][0];
//execute delete relation statement
$sql = "delete from {$table} WHERE $this_key = '{$this->primaryKey}' AND $another_key IN (".implode(',', $keys).")";
$command = Yii::app()->db->createCommand($sql);
$command->execute();
}
/**
* Remove tables relation records on ManyMany relation
* @param string $relationName the name of the relation, needs to be updated
*/
public function removeAllRelationRecords($relationName)
{
//get correct relation from model relation definition
$relation = $this->getActiveRelation($relationName);
$matches = $this->verifyManyManyRelation($relation);
$table = $matches[1][0];
$this_key = $matches[2][0];
//execute delete relation statement
$sql = "delete from {$table} WHERE $this_key = '{$this->primaryKey}'";
$command = Yii::app()->db->createCommand($sql);
$command->execute();
}
}