Update MySQL database Symfony2 - mysql

Question

I have a MySQL database and frontend DataTables view and work with Symfony.
I have 2 buttons on my tables. Delete and edit.
If I click on delete, it deletes the row from the DataTables and from MySqL. Works with this code:
/**
* #Route("/delete/{id}", name="deletepage")
* #Template()
*/
public function delete($id)
{
$em = $this->getDoctrine()->getManager();
$events = $em -> getRepository('AppBundle:eqAli')->find($id);
$em -> remove($events);
$em -> flush();
return $this->redirectToroute('homepage');
}
I have an edit button, which redirects to an edit page, where the data from that row is auto-filled.
What I am trying to achieve is that once there is made a change by a user on that page and the user clicks on save, that the new information will be updated into MySQL. So no delete, but update.
I am trying to achieve that with this code:
/**
* #Route("/edit/update/{id}", name="updatepage")
* #Template()
*/
public function update($id)
{
$em = $this->getDoctrine()->getManager();
$events = $em -> getRepository('AppBundle:eqAli')->find($id);
$em -> persist($events);
$em -> flush();
return $this->redirectToroute('homepage');
}
But that does nothing. It does get the right ID, I can click, just no update into MySQL. The path etc is right because when I change persist into delete, the button works.
Anyone a solution?

Answer 1

Basically, you are fetching single eqAli entity, ordering Entity Manager to manage it and flush all changes to your entities into database.
The problem is that you are not making actual changes to your entity before saving.

Answer 2

Ehhh ...
All should be in editAction (no redirect to update route necessary) , below you have working example, try to implement it on your case (it's a little bit more advanced , but you should catch idea ) .
```
/**
* #ParamConverter(name="reklama", class="SomeBundle:Reklamy")
* #Template()
* #param Request $request
* #param Reklamy $reklama
*/
public function editAction(Request $request,Reklamy $reklama){
$em = $this->getDoctrine()->getManager();
$form=$this->createForm(new ReklamyType(),$reklama);
if($request->getMethod()=="POST"){
$form->handleRequest($request);
if($form->isValid()){
$em->flush();
return $this->redirectToRoute('someroute')
}
}
return array('form'=>$form->createView());
}

Answer 3

You need to do something with the $events entity that you found, like so:
$events = $em -> getRepository('AppBundle:eqAli')->find($id);
...
$events->modifyDate( new DateTime() );
...
$em -> persist($events);
$em -> flush();
Where for example modifyDate is a method that is part of the eqAli Entity. I show ... before and after to indicate you might need to do other changes to your entity. In your original code, you are not changing anything at all. That's why you don't see any differences in the database.