How to access saved entity via metadata using parameters in the route - twig

Question

I have an entity contact
<?php
namespace App\Entity;
use App\Repository\ContactRepository;
use Doctrine\ORM\Mapping as ORM;
/**
* #ORM\Entity(repositoryClass=ContactRepository::class)
*/
class Contact
{
/**
* #ORM\Id
* #ORM\GeneratedValue
* #ORM\Column(type="integer")
*/
private $id;
/**
* #ORM\Column(type="string", length=50)
*/
private $firstName;
/**
* #ORM\Column(type="string", length=50)
*/
private $lastName;
/**
* #ORM\Column(type="date", nullable=true)
*/
private $dob;
/**
* #ORM\Column(type="string", length=50)
*/
private $email;
/**
* #ORM\Column(type="string", length=15)
*/
private $phone;
public function getId(): ?int
{
return $this->id;
}
public function getFirstName(): ?string
{
return $this->firstName;
}
public function setFirstName(string $firstName): self
{
$this->firstName = $firstName;
return $this;
}
public function getLastName(): ?string
{
return $this->lastName;
}
public function setLastName(string $lastName): self
{
$this->lastName = $lastName;
return $this;
}
public function getDob(): ?\DateTimeInterface
{
return $this->dob;
}
public function setDob(?\DateTimeInterface $dob): self
{
$this->dob = $dob;
return $this;
}
public function getEmail(): ?string
{
return $this->email;
}
public function setEmail(string $email): self
{
$this->email = $email;
return $this;
}
public function getPhone(): ?string
{
return $this->phone;
}
public function setPhone(string $phone): self
{
$this->phone = $phone;
return $this;
}
}
I want to select one (or more) contact with this URL: /c00210/readallbyparam/{routeProperty}/{routeValue}
For example: /c00210/readallbyparam/lastname/Mendelsohn
This should return 2 records:
Felix Mendelsohn
Fanny Mendelsohn
How do I write the render() function?
How do I write the twig instructions?
I suppose I should use the metadata, but I don't know
+++++++++++++++++++++++++++++++++++++++
here is the function in my controller
/**
* #Route("/c00210/readallbyparam/{routeProperty}/{routeValue}", name="c00210_read_all_by_param")
*/
public function findAllByparam( $routeProperty,$routeValue)
{
$property = $routeProperty;
$value = $routeValue;
$repository = $this->getDoctrine()->getRepository(Contact::class);
$contacts = $repository->findAll();
return $this->render('c00210/readbycriteria2.html.twig', [
'function' => 'find(<id>)',
'description' => 'finds the with the given Id',
'property' => $property,
'value' => $value,
'contacts' => $contacts,
]);
routeProperty should be a column name, and routeValue a column value
shoud be equivalent to
SELECT * FROM contacts WHERE lastname = 'Mendelsohn'