few more changes to the CRUD layer in ams

This commit is contained in:
shubham_meena 2014-05-27 14:19:37 +05:30
parent 33eece53b4
commit 333cfcc8d2

View file

@ -67,34 +67,74 @@ class DBLayer{
return $statement;
}
/**
/**
* execute a query (an insertion query) that has parameters and return the id of it's insertion
* @param $query the mysql query
* @param $params the parameters that are being used by the query
* @return returns the id of the last inserted element.
*/
public function executeReturnId($query,$params){
$statement = $this->PDO->prepare($query);
$this->PDO->beginTransaction();
$statement->execute($params);
$lastId =$this->PDO->lastInsertId();
$this->PDO->commit();
return $lastId;
public function executeReturnId($tb_name,$data){
$field_values =':'. implode(',:', array_keys($data));
$field_options = implode(',', array_keys($data));
try{
$sth = $this->PDO->prepare("INSERT INTO $tb_name ($field_options) VALUE ($field_values)");
foreach ($data as $key => $value )
{
$sth->bindValue(":$key", $value);
}
$this->PDO->beginTransaction();
//execution
$sth->execute();
$lastId =$this->PDO->lastInsertId();
$this->PDO->commit();
}catch (Exception $e)
{
//for rolling back the changes during transaction
$this->PDO->rollBack();
throw new Exception("error in inseting");
}
return $lastId;
}
/**
/**
*
* Select function using prepared statement
* @param string $tb_name Table Name to Select
* @param array $data Associative array
* @param string $where where to select
* @return array Array containing fetched data
* @return statement object
*/
public function select($query, $data)
public function selectWithParameter($param, $tb_name, $data, $where)
{
try{
$sth = $this->PDO->prepare($query);
$sth = $this->PDO->prepare("SELECT $param FROM $tb_name WHERE $where");
$this->PDO->beginTransaction();
$sth->execute($data);
$this->PDO->commit();
}catch(Exception $e)
{
$this->PDO->rollBack();
throw new Exception("error selection");
return false;
}
return $sth;
}
/**
*
* Select function using prepared statement
* @param string $tb_name Table Name to Select
* @param array $data Associative array
* @param string $where where to select
* @return statement object
*/
public function select($tb_name, $data ,$where)
{
try{
$sth = $this->PDO->prepare("SELECT * FROM $tb_name WHERE $where");
$this->PDO->beginTransaction();
$sth->execute(array($data));
$sth->execute($data);
$this->PDO->commit();
}catch(Exception $e)
{
@ -152,7 +192,6 @@ class DBLayer{
$sth = $this->PDO->prepare("INSERT INTO $tb_name ($field_options) VALUE ($field_values)");
foreach ($data as $key => $value )
{
$sth->bindValue(":$key", $value);
}
$this->PDO->beginTransaction();