Advanced usage: example with Doctrine

That's not really an advanced topic, but the sample will be a bit hard to read (as it takes many files), so let's say it targets more experienced Symfony users.

In this demo, we're displaying a MyArray of MyElements, both persisted into the database. The MyArray entity only have an id and a name, and MyElement has id, MyArray's id and a value. This is quite the same as we seen in all demos, but persisted.


Existing arrays:
Name Open Delete
_Greeting Open Delete
? Open Delete
(orphée) Open Delete
@12 Open Delete
#72 Open Delete
#AlgoSucks Open Delete
#timowashere Open Delete
%2372 Open Delete
%237233333 Open Delete
%25237233333 Open Delete
%25237233333#i5784b3886628c4362594ffa43547edb4 Open Delete
%25237233333#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
%25237233333#ie025efbbb0738ed01a63b326c174233e Open Delete
%252372uuuu#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
%252372uuuu#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
%252372uuuu#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
%252372uuuu#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
%252391 Open Delete
%253F#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
%253F#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
%253F#i21ef661e2506d5d0e513dce166c17d49 Open Delete
%253F#i27992875ec4286a24e569b1e015b0473 Open Delete
%253F#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
%2E Open Delete
%C3%B1lkjlkj Open Delete
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<LETTRE GREC>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Open Delete
<script>alert('test')</script> Open Delete
<script>alert('test')</script>%n%n%n%n%n%n Open Delete
<script>alert('test')</script>%n%n%n%n%n%n<script>alert('test')</script>%n%n%n%n%n%n<script>alert('test')</script>%n%n%n%n%n%n<script>alert('test')</script>%n%n%n%n%n%n<script>alert('test')</script>%n%n%n%n%n%n<script>alert('test')</script>%n%n%n%n%n%n<sc Open Delete
00000 Open Delete
10 Open Delete
11#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
11#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
11#i21ef661e2506d5d0e513dce166c17d49 Open Delete
11#i27992875ec4286a24e569b1e015b0473 Open Delete
11#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
11#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
1111 Open Delete
1111#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
1111#i21ef661e2506d5d0e513dce166c17d49 Open Delete
1111#i27992875ec4286a24e569b1e015b0473 Open Delete
1111#i5784b3886628c4362594ffa43547edb4 Open Delete
1111#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
1111#ie025efbbb0738ed01a63b326c174233e Open Delete
1111111111111111111111111111111111#i27992875ec4286a24e569b1e015b0473 Open Delete
1111111111111111111111111111111111#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
1111111111111111111111111111111111#ie025efbbb0738ed01a63b326c174233e Open Delete
1121 Open Delete
123 Open Delete
1aa Open Delete
3 Open Delete
32jnni Open Delete
8chan.org Open Delete
999 Open Delete
☘ Cela fonctionne ☘ Open Delete
a2 Open Delete
ñlkjlkj Open Delete
ñsfkjaldsa Open Delete
ñlkjlkj Open Delete
ñsfkjaldsa Open Delete
aaaaa Open Delete
тест Open Delete
aaamine22222#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
aaamine22222#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
Alpha Open Delete
asd Open Delete
asdasd#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
asdasd#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
asdasd#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
asdasd#ie025efbbb0738ed01a63b326c174233e Open Delete
asdasdadasd Open Delete
asdasdadasd#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
asdasdadasd#i5784b3886628c4362594ffa43547edb4 Open Delete
asdasdadasd#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
asdf Open Delete
asdfasdfasd8888 Open Delete
assa Open Delete
b Open Delete
bjfhj#i21ef661e2506d5d0e513dce166c17d49 Open Delete
bjfhj#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
blah#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
blah#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
blah#i27992875ec4286a24e569b1e015b0473 Open Delete
blah#i5784b3886628c4362594ffa43547edb4 Open Delete
blah#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
blah#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
caracas Open Delete
Caracas222666 Open Delete
Cela fonctionne Open Delete
Cuves Open Delete
cx<wc Open Delete
D Open Delete
D#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
D#i27992875ec4286a24e569b1e015b0473 Open Delete
D#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
D#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
D#ie025efbbb0738ed01a63b326c174233e Open Delete
defrsdf Delete
delete_empty Open Delete
dfa Open Delete
dfa#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
dfa#i27992875ec4286a24e569b1e015b0473 Open Delete
dfa#i5784b3886628c4362594ffa43547edb4 Open Delete
dfa#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
dfa#ie025efbbb0738ed01a63b326c174233e Open Delete
dfdt Open Delete
dfvds Open Delete
dgh Open Delete
dghdfgdfgd Open Delete
Doom Open Delete
dsf Open Delete
dsvfdsfg] Open Delete
exadasdas Open Delete
exam Open Delete
exampldfdfe Open Delete
example Open Delete
example exam Open Delete
example%20exam Open Delete
example123 Open Delete
example123#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
example123#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
example123#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
example123#ie025efbbb0738ed01a63b326c174233e Open Delete
example33333 Open Delete
example4 Open Delete
exampleasfsafa Open Delete
exampleasfsafasf#i21ef661e2506d5d0e513dce166c17d49 Open Delete
exampleaz Open Delete
examplee Open Delete
examplehjkhjk Open Delete
examplemmm Open Delete
examplemmmm Open Delete
exampleRW2 Open Delete
examplesa Open Delete
examplesadfasfasdf Open Delete
exampletest_11 Open Delete
exkiample Open Delete
fdf#i27992875ec4286a24e569b1e015b0473 Open Delete
fdf#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
fdf#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
fdf#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
fdf#ie025efbbb0738ed01a63b326c174233e Open Delete
fdsf Open Delete
fg Open Delete
fgdfgfg Open Delete
fuck%20you Open Delete
gdfg Open Delete
gdfg#i21ef661e2506d5d0e513dce166c17d49 Open Delete
gdfg#i27992875ec4286a24e569b1e015b0473 Open Delete
gdfg#i5784b3886628c4362594ffa43547edb4 Open Delete
gdfg#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
gg'A=0 Open Delete
ghjk#i21ef661e2506d5d0e513dce166c17d49 Open Delete
ghjk#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
ghjk#ie025efbbb0738ed01a63b326c174233e Open Delete
Group%20B Open Delete
Group%2BC Open Delete
Group%2BC#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
Group%2BC#i27992875ec4286a24e569b1e015b0473 Open Delete
Group%2BC#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
Group+C Open Delete
Hello World ! Open Delete
Hello%20World%20! Open Delete
hellowrld Open Delete
HEYY%20:D Open Delete
HEYY%2520:D Open Delete
HEYY%2520:D#i27992875ec4286a24e569b1e015b0473 Open Delete
HEYY%2520:D#i5784b3886628c4362594ffa43547edb4 Open Delete
HEYY%2520:D#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
HEYY%2520:D#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
hghgh Open Delete
hgjgjh Open Delete
hh Open Delete
hjvhj Open Delete
hujpizda Open Delete
hyhy Open Delete
iooi Open Delete
ismail Open Delete
itemList Open Delete
jhgfgh Open Delete
kaas Open Delete
kappa Open Delete
kfhk Open Delete
khj Open Delete
khj#i21ef661e2506d5d0e513dce166c17d49 Open Delete
khj#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
khj#ie025efbbb0738ed01a63b326c174233e Open Delete
kkk Open Delete
kkk#i27992875ec4286a24e569b1e015b0473 Open Delete
kkk#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
kkk#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
kkk#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
kkk#ie025efbbb0738ed01a63b326c174233e Open Delete
kpok´p Open Delete
l Open Delete
lj Open Delete
lkj Open Delete
ll Open Delete
llllllllllllllll Open Delete
mec Open Delete
mon tableau Open Delete
mon%20tableau Open Delete
тест Open Delete
New Array Open Delete
New_test_2017- Open Delete
New%20Array Open Delete
ñlkjlkj Open Delete
nmn#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
nmn#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
nmn#ie025efbbb0738ed01a63b326c174233e Open Delete
nnnnn Open Delete
o Open Delete
o%C4%B1 Open Delete
oı Open Delete
oı Open Delete
oui Open Delete
Ouiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii Open Delete
Ouiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii Open Delete
perses#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
perses#i21ef661e2506d5d0e513dce166c17d49 Open Delete
perses#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
perses#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
perses#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
poiuytre Open Delete
pppppii#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
pppppii#i21ef661e2506d5d0e513dce166c17d49 Open Delete
pppppii#i27992875ec4286a24e569b1e015b0473 Open Delete
pppppii#i5784b3886628c4362594ffa43547edb4 Open Delete
pppppii#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
project 1 Open Delete
qsdfqsdf Open Delete
quantite%20--1 Open Delete
rar Open Delete
rerererere Open Delete
rewq Open Delete
rrrr#i21ef661e2506d5d0e513dce166c17d49 Open Delete
rrrr#i5784b3886628c4362594ffa43547edb4 Open Delete
salut les gens Open Delete
samples Open Delete
sdsd Open Delete
seeme Open Delete
seeme#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
seeme#i21ef661e2506d5d0e513dce166c17d49 Open Delete
seeme#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
seeme#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
sfsdfsd Open Delete
someNewArray Open Delete
someNewArray#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
someNewArray#i21ef661e2506d5d0e513dce166c17d49 Open Delete
someNewArray#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
someNewArray#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
someNewArray#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
Ta mere la grosse choin Open Delete
Ta%20mere%20la%20grosse%20choin Open Delete
Ta%20mere%20la%20grosse%20tchoin Open Delete
Ta%2520mere%2520la%2520grosse%2520choin Open Delete
Ta%2520mere%2520la%2520grosse%2520choin#i5784b3886628c4362594ffa43547edb4 Open Delete
Ta%2520mere%2520la%2520grosse%2520choin#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
terst Open Delete
tesss Open Delete
TEST Open Delete
test34 Open Delete
Teste Open Delete
testsetse Open Delete
texte Open Delete
the+test Open Delete
timo Open Delete
tojo Open Delete
tyty Open Delete
ugghutugituiutu Open Delete
uuu Open Delete
Vai que da Open Delete
vcvcvcvcvv Open Delete
Volta Di Open Delete
Volta Dilm Open Delete
Volta%2520Dilma%2520Fo Open Delete
Volta%2520Dilma%2520Fora%2520Temer#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
Volta%2520Dilma%2520Fora%2520Temer#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
Volta%2520Dilma%2520Fora%2520Temer#i21ef661e2506d5d0e513dce16 Open Delete
Volta%2520Dilma%2520Fora%2520Temer#i27992875ec4286a24e569b1e015b0473 Open Delete
Volta%2520Dilma%2520Fora%2520Temer#i5784b3886628c4362594ffa43547edb4 Open Delete
Volta%2520Dilma%2520Fora%2520Temer#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
Volta+Dilma+Fo Open Delete
werweexample Open Delete
why doctrine on delete not work Open Delete
why doctrine on delete not work? Open Delete
why%20doctrine%20on%20delete%20not%20work Open Delete
Woop wooop Open Delete
www Open Delete
wxc%3Cwxc Open Delete
wxc<wxc Open Delete
Xbox Series X > PS5 Open Delete
xy Open Delete
zzz Open Delete
<?php

namespace Fuz\AppBundle\Base;

use Fuz\AppBundle\Entity\Value;
use Fuz\AppBundle\Form\ValueType;
use Fuz\QuickStartBundle\Base\BaseController as QuickStartBase;
use Symfony\Component\Form\Extension\Core\Type;
use Symfony\Component\HttpFoundation\Request;

class BaseController extends QuickStartBase
{
    protected function createContextSample(Request $request, $name = 'form', $values = ['a', 'b', 'c'])
    {
        $data = ['values' => $values];

        $form = $this
           ->get('form.factory')
           ->createNamedBuilder($name, Type\FormType::class, $data)
           ->add('values', Type\CollectionType::class, [
               'entry_type'    => Type\TextType::class,
               'label'         => 'Add, move, remove values and press Submit.',
               'entry_options' => [
                   'label' => 'Value',
               ],
               'allow_add'    => true,
               'allow_delete' => true,
               'prototype'    => true,
               'attr'         => [
                   'class' => "{$name}-collection",
               ],
           ])
           ->add('submit', Type\SubmitType::class)
           ->getForm()
        ;

        $form->handleRequest($request);
        if ($form->isValid()) {
            $data = $form->getData();
        }

        return [
            $name         => $form->createView(),
            "{$name}Data" => $data,
        ];
    }

    protected function createAdvancedContextSample(Request $request, $name = 'advancedForm')
    {
        $a = new Value('a');
        $b = new Value('b');
        $c = new Value('c');

        $data = ['values' => [$a, $b, $c]];

        $form = $this
           ->get('form.factory')
           ->createNamedBuilder($name, Type\FormType::class, $data)
           ->add('values', Type\CollectionType::class, [
               'entry_type'   => ValueType::class,
               'label'        => 'Add, move, remove values and press Submit.',
               'allow_add'    => true,
               'allow_delete' => true,
               'prototype'    => true,
               'required'     => false,
               'attr'         => [
                   'class' => "{$name}-collection",
               ],
           ])
           ->add('submit', Type\SubmitType::class)
           ->getForm()
        ;

        $form->handleRequest($request);
        if ($form->isValid()) {
            $data = $form->getData();
        }

        return [
            $name         => $form->createView(),
            "{$name}Data" => $data,
        ];
    }
}
<?php

namespace Fuz\AppBundle\Controller;

use Fuz\AppBundle\Base\BaseController;
use Fuz\AppBundle\Entity\Address;
use Fuz\AppBundle\Entity\Addresses;
use Fuz\AppBundle\Entity\Fancy;
use Fuz\AppBundle\Entity\FancyCollection;
use Fuz\AppBundle\Entity\Value;
use Fuz\AppBundle\Form\AddressesType;
use Fuz\AppBundle\Form\FancyCollectionType;
use Fuz\AppBundle\Form\MyArrayType;
use Fuz\AppBundle\Form\ValueType;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Template;
use Symfony\Component\Form\Extension\Core\Type;
use Symfony\Component\HttpFoundation\Request;

/**
 * @Route("/advanced")
 */
class AdvancedController extends BaseController
{
    /**
     * Advanced usage
     *
     * You can reference your form collection in the view, instead of
     * putting a selector in the form type.
     *
     * @Route("/mvcCompliance", name="mvcCompliance")
     * @Template()
     */
    public function mvcComplianceAction(Request $request)
    {
        $data = ['values' => ['a', 'b', 'c']];

        $form = $this
           ->createFormBuilder($data)
           ->add('values', Type\CollectionType::class, [
               'entry_type'    => Type\TextType::class,
               'label'         => 'Add, move, remove values and press Submit.',
               'entry_options' => [
                   'label' => 'Value',
               ],
               'allow_add'    => true,
               'allow_delete' => true,
               'prototype'    => true,
               'required'     => false,
//                   'attr' => array (
//                           'class' => 'my-selector', <--- Not MVC compliant!
//                   ),
           ])
           ->add('submit', Type\SubmitType::class)
           ->getForm()
        ;

        $form->handleRequest($request);
        if ($form->isValid()) {
            $data = $form->getData();
        }

        return [
            'form' => $form->createView(),
            'data' => $data,
        ];
    }

    /**
     * Advanced usage
     *
     * A custom form theme helps define button's layout and positions as and where you want.
     *
     * @Route("/customFormTheme", name="customFormTheme")
     * @Template()
     */
    public function customFormThemeAction(Request $request)
    {
        $data = ['values' => [new Value('a'), new Value('b'), new Value('c')]];

        $form = $this
           ->createFormBuilder($data)
           ->add('values', Type\CollectionType::class, [
               'entry_type'   => ValueType::class,
               'label'        => 'Add, move, remove values and press Submit.',
               'allow_add'    => true,
               'allow_delete' => true,
               'prototype'    => true,
               'required'     => false,
               'attr'         => [
                   'class' => 'collection',
               ],
           ])
           ->add('submit', Type\SubmitType::class)
           ->getForm()
        ;

        $form->handleRequest($request);
        if ($form->isValid()) {
            $data = $form->getData();
        }

        return [
            'form' => $form->createView(),
            'data' => $data,
        ];
    }

    /**
     * Advanced usage
     *
     * Same demo as above, but with the add button located at the bottom of
     * the form instead of close to each field.
     *
     * @Route("/customFormThemeAddBottom", name="customFormThemeAddBottom")
     * @Template()
     */
    public function customFormThemeAddBottomAction(Request $request)
    {
        return $this->customFormThemeAction($request);
    }

    /**
     * Advanced usage
     *
     * Collection of collections are useful on the most dynamic forms, and a good
     * way to test if the plugin is working as expected too.
     *
     * @Route("/collectionOfCollections", name="collectionOfCollections")
     * @Template()
     */
    public function collectionOfCollectionsAction(Request $request)
    {
        $data = [
            'collections' => [
                [new Value('a'), new Value('b'), new Value('c')],
                [new Value('d'), new Value('e'), new Value('f')],
                [new Value('g'), new Value('h'), new Value('i')],
            ],
        ];

        $form = $this
           ->get('form.factory')
           ->createNamedBuilder('form', Type\FormType::class, $data)
           ->add('collections', Type\CollectionType::class, [
               'entry_type'    => Type\CollectionType::class,
               'label'         => 'Add, move, remove collections',
               'entry_options' => [
                   'entry_type'    => ValueType::class,
                   'label'         => 'Add, move, remove values',
                   'entry_options' => [
                       'label' => 'Value',
                   ],
                   'allow_add'      => true,
                   'allow_delete'   => true,
                   'prototype'      => true,
                   'prototype_name' => '__children_name__',
                   'attr'           => [
                       'class' => 'child-collection',
                   ],
               ],
               'allow_add'      => true,
               'allow_delete'   => true,
               'prototype'      => true,
               'prototype_name' => '__parent_name__',
               'attr'           => [
                   'class' => 'parent-collection',
               ],
           ])
           ->add('submit', Type\SubmitType::class)
           ->getForm()
        ;

        $form->handleRequest($request);
        if ($form->isValid()) {
            $data = $form->getData();
        }

        return [
            'form' => $form->createView(),
            'data' => $data,
        ];
    }

    /**
     * Advanced usage
     *
     * Looks like there are weird behaviours with Doctrine:
     * https://github.com/ninsuo/symfony-collection/issues/7
     * Let's test that live!
     *
     * ... hmm, doesn't look bad anyway
     *
     * @Route(
     *      "/usageWithDoctrine/{name}",
     *      name = "usageWithDoctrine",
     *      defaults = {
     *          "name" = "example"
     *      }
     * )
     * @Template()
     */
    public function usageWithDoctrineAction(Request $request, $name)
    {
        $repo = $this->getDoctrine()->getRepository('FuzAppBundle:MyArray');

        $data = $repo->findOneByName($name);
        if (is_null($data)) {
            $data = $repo->create($name);
        }

        $form = $this->createForm(MyArrayType::class, $data);
        $form->handleRequest($request);

        $form->get('save')->isClicked() && $form->isValid() && $repo->save($data);

        return [
            'names' => $repo->getArrayNames(),
            'form'  => $form->createView(),
            'data'  => $data,
        ];
    }

    /**
     * Related to usageWithDoctrine demo
     *
     * @Route(
     *      "/usageWithDoctrineDelete/{name}",
     *      name = "usageWithDoctrineDelete"
     * )
     */
    public function usageWithDoctrineDeleteAction(Request $request, $name)
    {
        $repo = $this->getDoctrine()->getRepository('FuzAppBundle:MyArray');
        if (!is_null($data = $repo->findOneByName($name))) {
            $repo->delete($data);
        }

        return $this->forward('FuzAppBundle:Advanced:usageWithDoctrine', [
            'name' => 'example',
        ]);
    }

    /**
     * A form having a theme and containing several fields
     *
     * @Route(
     *      "/formHavingSeveralFields",
     *      name = "formHavingSeveralFields"
     * )
     * @Template()
     */
    public function formHavingSeveralFieldsAction(Request $request)
    {
        $address = new Address();
        $address->setName('Mickael Steller');
        $address->setCompany('fuz.org');
        $address->setStreet('41 rue de la Paix');
        $address->setPostalcode('75002');
        $address->setCity('Paris');
        $address->setCountry('France');

        $addresses = new Addresses();
        $addresses->getAddresses()->add($address);

        $form = $this->createForm(AddressesType::class, $addresses);
        if ($request->isMethod('POST')) {
            $form->handleRequest($request);
        }

        return [
            'form' => $form->createView(),
            'data' => $addresses,
        ];
    }

    /**
     * Another example of form theme
     *
     * @Route(
     *      "/fancyFormTheme",
     *      name = "fancyFormTheme"
     * )
     * @Template()
     */
    public function fancyFormThemeAction(Request $request)
    {
        $fancyCollection = new FancyCollection();

        for ($i = 0; $i < 3; $i++) {
            $fancy = new Fancy();
            $fancyCollection->getFancyCollection()->add($fancy);
        }

        $form = $this->createForm(FancyCollectionType::class, $fancyCollection);

        $form->handleRequest($request);
        if ($form->isValid()) {
            $data = $form->getData();
        }

        return [
            'form' => $form->createView(),
            'data' => $fancyCollection,
        ];
    }
}
<?php

namespace Fuz\AppBundle\Entity;

use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\ORM\Mapping as ORM;

/**
 * MyArray
 *
 * @ORM\Table(
 *      name="my_array",
 *      uniqueConstraints={@ORM\UniqueConstraint(name="name_idx", columns={"name"})}
 * )
 * @ORM\Entity(repositoryClass="Fuz\AppBundle\Repository\MyArrayRepository")
 */
class MyArray
{
    /**
     * @var int
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @var string
     *
     * @ORM\Column(name="name", type="string", length=255)
     */
    protected $name;

    /**
     * @var ArrayCollection
     *
     * @ORM\OneToMany(targetEntity="MyElement", mappedBy="array", cascade={"all"}, orphanRemoval=true)
     */
    protected $elements;

    public function __construct()
    {
        $this->elements = new ArrayCollection();
    }

    public function getId()
    {
        return $this->id;
    }

    public function getName()
    {
        return $this->name;
    }

    public function setName($name)
    {
        $this->name = $name;

        return $this;
    }

    public function getElements()
    {
        return $this->elements;
    }
}
<?php

namespace Fuz\AppBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * MyElement
 *
 * @ORM\Table(name="my_element"),
 * @ORM\Entity
 */
class MyElement
{
    /**
     * @var int
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @var MyArray
     *
     * @ORM\ManyToOne(targetEntity="MyArray", inversedBy="elements")
     * @ORM\JoinColumn(name="my_array_id", referencedColumnName="id")
     */
    protected $array;

    /**
     * @var string
     *
     * @ORM\Column(name="value", type="string", length=255)
     */
    protected $value;

    public function setId($id)
    {
        $this->id = $id;

        return $this;
    }

    public function getId()
    {
        return $this->id;
    }

    public function setArray(MyArray $array)
    {
        $this->array = $array;

        return $this;
    }

    public function getArray()
    {
        return $this->array;
    }

    public function setValue($value)
    {
        $this->value = $value;

        return $this;
    }

    public function getValue()
    {
        return $this->value;
    }
}
<?php

namespace Fuz\AppBundle\Form;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\CollectionType;
use Symfony\Component\Form\Extension\Core\Type\SubmitType;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;

class MyArrayType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('name', TextType::class, [
                'label' => 'Array name:',
        ]);

        $builder->add('elements', CollectionType::class, [
            'label'        => 'Add an element...',
            'entry_type'   => MyElementType::class,
            'allow_add'    => true,
            'allow_delete' => true,
            'prototype'    => true,
            'required'     => false,
            'by_reference' => true,
            'delete_empty' => true,
            'attr'         => [
                'class' => 'doctrine-sample',
            ],
        ]);

        $builder->add('save', SubmitType::class, [
                'label' => 'Save this array',
        ]);
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class' => 'Fuz\AppBundle\Entity\MyArray',
        ]);
    }

    public function getBlockPrefix()
    {
        return 'my_array';
    }
}
<?php

namespace Fuz\AppBundle\Form;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\TextType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;

class MyElementType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('value', TextType::class, [
            'required' => false,
        ]);
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class' => 'Fuz\AppBundle\Entity\MyElement',
        ]);
    }

    public function getBlockPrefix()
    {
        return 'my_element';
    }
}
<?php

namespace Fuz\AppBundle\Repository;

use Doctrine\DBAL\Exception\UniqueConstraintViolationException;
use Doctrine\ORM\EntityRepository;
use Fuz\AppBundle\Entity\MyArray;

/**
 * MyArrayRepository.
 */
class MyArrayRepository extends EntityRepository
{
    public function create($name)
    {
        $data = new MyArray();
        $data->setName($name);
        try {
            $this->_em->persist($data);
            $this->_em->flush();
        } catch (UniqueConstraintViolationException $e) {
            return null;
        }

        return $data;
    }

    public function save(MyArray $data)
    {
        foreach ($data->getElements() as $element) {
            $element->setArray($data);
        }
        try {
            $this->_em->persist($data);
            $this->_em->flush();
        } catch (UniqueConstraintViolationException $e) {
            return null;
        }

        return $data;
    }

    public function getArrayNames()
    {
        $arrays = $this
            ->_em
            ->createQuery("
               SELECT arr.name
               FROM Fuz\AppBundle\Entity\MyArray arr
            ")
            ->execute();
        $names = [];
        foreach ($arrays as $array) {
            $names[] = $array['name'];
        }

        return $names;
    }

    public function delete(MyArray $data)
    {
        foreach ($data->getElements() as $element) {
            $this->_em->remove($element);
        }
        $this->_em->remove($data);
        $this->_em->flush();
    }
}

{% block my_element_label %}{% endblock %}
{% block my_element_errors %}{% endblock %}

{% block my_element_widget %}

    <div class="row">
        <div class="col-md-7">
            {{ form_widget(form.value) }}
        </div>
        <div class="col-md-2">
            <a href="#" class="collection-up btn btn-default">Up</a>
            <a href="#" class="collection-down btn btn-default">Down</a>
        </div>
        <div class="col-md-2">
            <a href="#" class="collection-remove btn btn-default">Remove</a>
            <a href="#" class="collection-add btn btn-default">Add</a>
        </div>
        <div class="col-md-1">
            <a href="#" class="collection-duplicate btn btn-default">Duplicate</a>
        </div>
    </div>

{% endblock %}
{% extends 'FuzAppBundle::layout.html.twig' %}

{% block extra_js %}
    <script src="{{ asset('js/jquery.collection.js') }}"></script>
{% endblock %}

{% block title %}Advanced usage: example with Doctrine{% endblock %}

{% block body %}

    <h2>{{ block('title') }}</h2>

    <p>
        That's not really an <i>advanced</i> topic, but the sample will be a bit hard to read (as it takes many files),
        so let's say it targets more experienced Symfony users.
    </p>

    <p>
        In this demo, we're displaying a MyArray of MyElements, both persisted into the database. The MyArray entity
        only have an id and a name, and MyElement has id, MyArray's id and a value. This is quite the same as we seen
        in all demos, but persisted.
    </p>

    <div class="text-center">
        <input type="button" id="new" class="btn btn-default" value="Create new array"/>
    </div>

    {%
        form_theme form
            'jquery.collection.html.twig'
            'FuzAppBundle:Advanced:doctrine-theme.html.twig'
    %}
    {{ form(form) }}

    <hr/>

    {% if names|length %}
        Existing arrays:
        <table class="table">
            <thead>
                <th>Name</th>
                <th>Open</th>
                <th>Delete</th>
            </thead>
            <tbody>
                {% for name in names %}
                    <tr>
                        <td>{{ name }}</td>
                        <td>
                            {% if data.name != name %}<a href="{{ path('usageWithDoctrine', {'name': name}) }}">Open</a>{% endif %}
                        </td>
                        <td><a href="{{ path('usageWithDoctrineDelete', {'name': name}) }}">Delete</a></td>
                    </tr>
                {% endfor %}
            </tbody>
        </table>
    {% endif %}

    {{
        tabs([
            'Base/BaseController.php',
            'Controller/AdvancedController.php',
            'Resources/views/Advanced/usageWithDoctrine.html.twig',
            'Resources/views/Advanced/doctrine-theme.html.twig',
            'Entity/MyArray.php',
            'Form/MyArrayType.php',
            'Entity/MyElement.php',
            'Form/MyElementType.php',
            'Repository/MyArrayRepository.php',
        ])
    }}

{% endblock %}

{% block script %}

    <script type="text/javascript">

        // only useful for the "new" button...
        $('#new').on('click', function() {
           var name = prompt("Which name would you like to use?");
           if (name) {
               var uri = '{{ path('usageWithDoctrine', {'name': 'a'}) }}';
               document.location = uri.substr(0, uri.length - 1) + encodeURIComponent(name);
           }
        });

        $('.doctrine-sample').collection();

    </script>

{% endblock %}