join tables in doctrine2 - php

Question

I am trying join the tables, in Doctrine2 Query Builder. This was my query to join the two tables and get the result.
Initially i have two tables to be joined:
--> employees
--> org_employees
Other tables:
--> users
Here in my Doctrine2 Query builder code, i have joined 2 tables to fetch the results of particular Organization employees by passing the Organization id.
SELECT
*
FROM org_branch_employees oe
LEFT JOIN employees e ON oe.employee_id = e.id
WHERE
oe.org_id = 1;
By using the Query Builder the above sql code has been changed like below.
$qb = $this->entityManager->createQueryBuilder();
$qb->select('oe', 'e', 'o')
->from('Employee\Entity\OrgEmployee', 'oe')
->leftJoin('oe.organization', 'o')
->leftJoin('oe.employee', 'e')
->where('oe.organization = :organizationId')
->setParameter('organizationId', $orgId);
$query = $qb->getQuery();
$orgEmployees = $query->getResult();
return $orgEmployees;
This is my Employee Entity:
<?php
namespace Employee\Entity;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\ORM\Mapping as ORM;
use Library\Entity\BaseEntity;
use Users\Entity\User;
use Organization\Entity\Organization;
//use Organization\Entity\OrgEmployee;
/**
* Description of Employee
*
* #author Macwin
*/
/**
* #ORM\Entity
* #ORM\Table(name="employees")
*/
class Employee extends BaseEntity {
/**
* #ORM\OneToOne(
* targetEntity="Users\Entity\User"
* )
* #ORM\JoinColumn(
* name="user_id",
* referencedColumnName="id",
* nullable=false
* )
*/
private $user;
/**
* #ORM\Column(name="employee_code", type="string", nullable=true)
* #var string
*/
protected $empCode;
/**
* #ORM\OneToOne(
* targetEntity="Organization\Entity\Organization"
* )
* #ORM\JoinColumn(
* name="org_id",
* referencedColumnName="id",
* nullable=false
* )
*/
private $organization;
/**
* #ORM\OneToMany(targetEntity="Employee\Entity\OrgEmployee", mappedBy="employee")
*/
protected $orgEmployee;
/**
* #ORM\OneToMany(targetEntity="Employee\Entity\OrgEmployeeDesignation", mappedBy="employee")
*/
protected $orgEmployeeDesignation;
public function __construct() {
$this->organizations = new \Doctrine\Common\Collections\ArrayCollection();
parent::__construct();
}
public function getOrganizations() {
return $this->organizations;
}
public function addOrganization(Organization $organization = null) {
$this->organizations->add($organization);
}
public function setUser(User $user = null) {
$this->user = $user;
}
public function getUser() {
return $this->user;
}
public function getEmpCode() {
return $this->empCode;
}
public function setEmpCode($empCode) {
$this->empCode = $empCode;
}
public function setOrganization(Organization $organization = null) {
$this->organization = $organization;
}
public function getOrganization() {
return $this->organization;
}
function getOrgEmployeeDesignation() {
return $this->orgEmployeeDesignation;
}
function setOrgEmployeeDesignation($orgEmployeeDesignation) {
$this->orgEmployeeDesignation = $orgEmployeeDesignation;
}
public function getOrgEmployee() {
return $this->orgEmployee;
}
public function __toString() {
return __CLASS__ . ": [id: {$this->id}, name: {$this->name}]";
}
}
Here is my OrgEmployee Entity Which maps the Organization table and Enity table, to get the Organization details and Employee Details.
<?php
namespace Employee\Entity;
use Doctrine\ORM\Mapping as ORM;
use Library\Entity\BaseEntity;
use Employee\Entity\Employee;
use Organization\Entity\Organization;
/**
* Description of Org Employees
*
* #author Macwin
*/
/**
* #ORM\Entity
* #ORM\Table(name="org_branch_employees")
*/
class OrgEmployee extends BaseEntity{
/**
* #ORM\ManyToOne(targetEntity="Employee\Entity\Employee", inversedBy="orgEmployee")
* #ORM\JoinColumn(name="employee_id",referencedColumnName="id",nullable=false)
*/
protected $employee;
/**
* #ORM\ManyToOne(targetEntity="Organization\Entity\Organization", inversedBy="orgEmployee")
* #ORM\JoinColumn(name="org_branch_id", referencedColumnName="id", nullable=false)
*/
protected $organization;
public function setEmployee(Employee $employee = null)
{
$this->employee = $employee;
return $this;
}
public function getEmployee()
{
return $this->employee;
}
public function setOrganization(Organization $organization = null)
{
$this->organization = $organization;
return $this;
}
public function getOrganization()
{
return $this->organization;
}
}
Here is how i am getting the Organization details and Employee Details:
'employeeCode' => $orgEmp->getEmployee()->getEmpCode(),
userFirstName = $orgEmp->getEmployee()->getUser()->getFirstName(),
Being, employees table has mapping of users table, i can fetch the users information,
so far so good, but while i am trying to join more tables here, i couldnt bring the exact result.
But when i need to make the filter in the above functionality, i am not sure, how can bring the exact result.
Like filter by employee_code, user first name.
Can anyone guide me to bring the result. I am working on the REST API side to give the result to the client. Pagination was also there in the functionality.
I am trying the following if i am rightly said:
SELECT
*
FROM org_branch_employees oe
LEFT JOIN employees e ON oe.employee_id = e.id
LEFT JOIN users u ON e.user_id = u.id
WHERE
oe.org_id = 1 AND
u.user_first_name = "John" and
e.employee_code = "EMP777"

Answer 1

So the first query is working as needed? You just need to join the user entity and add some where conditions? Or maybe I misunderstood the problem.
$qb = $this->entityManager->createQueryBuilder();
$qb->select('oe', 'e', 'o', 'user')
->from('Employee\Entity\OrgEmployee', 'oe')
->leftJoin('oe.organization', 'o')
->leftJoin('oe.employee', 'e')
->leftJoin('e.user','user')
->andWhere('oe.organization = :organizationId')
->setParameter('organizationId', $orgId),
->andWhere('user.user_first_name = :userFirstName')
->setParameter('userFirstName', 'John'),
->andWhere('e.employee_code = :employeeCode')
->setParameter('employeeCode', 'Emp666');
return $qb->getQuery()->getResult();