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
___ Array with Elements ... Click Open to test loading Open Delete
_____ Open Delete
_________AAAAAAAAAAAAA_______ Open Delete
___%20%E2%98%98%20Cela%20fonctionne%20%E2%98%98 Open Delete
___m Open Delete
__bvnvbnvbnvbn Open Delete
---#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
---#i21ef661e2506d5d0e513dce166c17d49 Open Delete
---#i27992875ec4286a24e569b1e015b0473 Open Delete
---#i5784b3886628c4362594ffa43547edb4 Open Delete
---#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
. Open Delete
#1 Open Delete
#456 Open Delete
#7233333 Open Delete
#72uuuuokokok Open Delete
#timowashere Open Delete
%237233333 Open Delete
%25237233333 Open Delete
%25237233333#i27992875ec4286a24e569b1e015b0473 Open Delete
%25237233333#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
%25237233333#ie025efbbb0738ed01a63b326c174233e Open Delete
%252372uuuu Open Delete
%252372uuuu#i27992875ec4286a24e569b1e015b0473 Open Delete
%252372uuuu#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
%252372uuuu#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
%252372uuuu#ie025efbbb0738ed01a63b326c174233e Open Delete
%253F#i21ef661e2506d5d0e513dce166c17d49 Open Delete
%253F#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
%253F#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
%27 Open Delete
%28orph%C3%A9e%29 Open Delete
%2E Open Delete
%3Csdsads Open Delete
%C3%83%C2%B1lkjlkj 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
000tom Open Delete
10 Open Delete
11 Open Delete
11#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
11#i21ef661e2506d5d0e513dce166c17d49 Open Delete
11#i5784b3886628c4362594ffa43547edb4 Open Delete
11#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
1111#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
1111#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
1111#ie025efbbb0738ed01a63b326c174233e Open Delete
1111111111111111111111111111111111 Open Delete
1111111111111111111111111111111111#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
1111111111111111111111111111111111#i21ef661e2506d5d0e513dce166c17d49 Open Delete
1111111111111111111111111111111111#i5784b3886628c4362594ffa43547edb4 Open Delete
1111111111111111111111111111111111#ie025efbbb0738ed01a63b326c174233e Open Delete
11111111aaa Open Delete
1111Yapi Open Delete
1121 Open Delete
121113 Open Delete
123 Open Delete
1231 Open Delete
123123 Open Delete
1aa Open Delete
1Alpha Open Delete
2 Open Delete
222 Open Delete
2222%2520example Open Delete
222222 Open Delete
2323 Open Delete
2344234 Open Delete
32 Open Delete
4545 Open Delete
5 Open Delete
5454 Open Delete
7 Open Delete
8 Open Delete
86787 Open Delete
88 Open Delete
8chan.org Open Delete
969 Open Delete
99 Open Delete
993223r23 Open Delete
a Open Delete
a Lorenz Open Delete
ñlkjlkj Open Delete
ñsf Open Delete
☘ Cela fonctionne ☘ Open Delete
a2 Open Delete
aa Open Delete
ñlkjlkj Open Delete
ñsfkjaldsa Open Delete
ñsfkjaldsa Open Delete
aaaaaaaaaaaaaa22 Open Delete
aaamine22222 Open Delete
aaamine22222#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
aaamine22222#i21ef661e2506d5d0e513dce166c17d49 Open Delete
aaamine22222#i5784b3886628c4362594ffa43547edb4 Open Delete
aaamine22222#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
aaamine22222#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
aaamine22222#ie025efbbb0738ed01a63b326c174233e Open Delete
aarzarzample Open Delete
aasdasd Open Delete
Abc1 Open Delete
adfadf Open Delete
adrian Open Delete
adsfdsf Open Delete
Alpha Open Delete
any Open Delete
Array Open Delete
array new Open Delete
array1 Open Delete
articulo Open Delete
asd Open Delete
asdaexample Open Delete
asdas Open Delete
asdasd Open Delete
asdasd#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
asdasd#i21ef661e2506d5d0e513dce166c17d49 Open Delete
asdasd#i27992875ec4286a24e569b1e015b0473 Open Delete
asdasd#i5784b3886628c4362594ffa43547edb4 Open Delete
asdasd#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
asdasdadasd Open Delete
asdasdadasd#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
asdasdadasd#i27992875ec4286a24e569b1e015b0473 Open Delete
asdasdadasd#i5784b3886628c4362594ffa43547edb4 Open Delete
asdasdadasd#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
asdasdadasd#ie025efbbb0738ed01a63b326c174233e Open Delete
asdasdasd Open Delete
asdf Open Delete
asds Open Delete
azerty Open Delete
balala Open Delete
bdfdfdfdf Open Delete
bite Open Delete
bjfhj Open Delete
bjfhj#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
bjfhj#i27992875ec4286a24e569b1e015b0473 Open Delete
bjfhj#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
bla Open Delete
blah Open Delete
blah#i21ef661e2506d5d0e513dce166c17d49 Open Delete
blah#i27992875ec4286a24e569b1e015b0473 Open Delete
blah#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
blah#ie025efbbb0738ed01a63b326c174233e Open Delete
bxvbvx Open Delete
caca Open Delete
cccio Open Delete
cool Open Delete
cups Open Delete
Cuves Open Delete
cx Open Delete
cx%3Cwc Open Delete
dadd Open Delete
das Open Delete
dasd Open Delete
dddddddddddddddddddddd Open Delete
delete_empty Open Delete
dfa Open Delete
dfa#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
dfa#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
dfa#i21ef661e2506d5d0e513dce166c17d49 Open Delete
dfa#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
dfa#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
dfdfdf Open Delete
dfdt Open Delete
dfgdfg Open Delete
dfsdf Open Delete
dfvds Open Delete
dgh Open Delete
diego Open Delete
Doom Open Delete
dra Open Delete
dsadsadd Open Delete
dsd Open Delete
dsdfgsdfgdf Open Delete
ee Open Delete
eeeeee Open Delete
ejemplo 2017 Open Delete
ejemplo 2017-11-23 Open Delete
erwgfu%C4%B1gj8hl%C4%B1 Open Delete
erwgfuıgj8hlı Open Delete
erwgfuıgj Open Delete
exadasdas Open Delete
exam Open Delete
example Delete
example exam Open Delete
example Radu Open Delete
example123 Open Delete
example123#i27992875ec4286a24e569b1e015b0473 Open Delete
example123#i5784b3886628c4362594ffa43547edb4 Open Delete
example123#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
example123#ie025efbbb0738ed01a63b326c174233e Open Delete
example2222222 Open Delete
example3243423 Open Delete
example33333 Open Delete
example4 Open Delete
exampleasd Open Delete
exampleasfsafa Open Delete
exampleasfsafasf Open Delete
exampleasfsafasf#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
exampleasfsafasf#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
exampleasfsafasf#i27992875ec4286a24e569b1e015b0473 Open Delete
exampleasfsafasf#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
exampleasfsafasf#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
exampleasfsafasf#ie025efbbb0738ed01a63b326c174233e Open Delete
examplee Open Delete
exampleede Open Delete
exampleeeeeeeeeeeee Open Delete
examplefffffffffffff Open Delete
examplefsd Open Delete
examplehfghfhfgfg Open Delete
examplemmm Open Delete
exampleqqqq Open Delete
exampleRW Open Delete
exampleRW2 Open Delete
examplesa Open Delete
examplesadasdsdsad Open Delete
examplesadfasfasdf Open Delete
examplesdddd Open Delete
exampless Open Delete
exampleu Open Delete
exampple Open Delete
Existing arr Open Delete
Existing arrays: Open Delete
Existing%20arrays: Open Delete
eze Open Delete
fasdfasf Open Delete
fat Open Delete
Fda Open Delete
fdasfdaF Open Delete
fdf#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
fdf#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
fdf#i27992875ec4286a24e569b1e015b0473 Open Delete
fdf#i5784b3886628c4362594ffa43547edb4 Open Delete
fdf#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
fdf#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
fdg Open Delete
fdgdf Open Delete
fdgfdgfdgfdgfd Open Delete
fdsfds Open Delete
ff Open Delete
ff d Open Delete
fff Open Delete
ffff Open Delete
ffsss Open Delete
fg Open Delete
fgfdgdgdf Open Delete
fghjk, Open Delete
foo Open Delete
Fora Bolsonaro Open Delete
fr Open Delete
fsda Open Delete
fsdfsdf Open Delete
fuck you Open Delete
fuck%20you Open Delete
gdfg#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
gdfg#i21ef661e2506d5d0e513dce166c17d49 Open Delete
gdfg#i27992875ec4286a24e569b1e015b0473 Open Delete
gdfg#i5784b3886628c4362594ffa43547edb4 Open Delete
gdfg#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
gdfg#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
gfdgdf Open Delete
ghjk Open Delete
ghjk#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
ghjk#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
ghjk#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
ghjk#ie025efbbb0738ed01a63b326c174233e Open Delete
gjkl Open Delete
Group B Open Delete
Group C Open Delete
Group%2BC#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
Group%2BC#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
Group%2BC#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
Group%2BC#ie025efbbb0738ed01a63b326c174233e Open Delete
gtgt Open Delete
Hallo Open Delete
hbhbhb Open Delete
hello Open Delete
Hello World ! Open Delete
HEYY%2520:D#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
hgfh Open Delete
hhh Open Delete
hjvhj Open Delete
htt Open Delete
hu Open Delete
hujpizda Open Delete
hyhy Open Delete
iooi Open Delete
ismail Open Delete
itemList Open Delete
iziokisio Open Delete
jb Open Delete
jbnn Open Delete
jghjghjgj Open Delete
jhgfgh Open Delete
jhkl Open Delete
kaas Open Delete
khj Open Delete
khj#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
khj#i27992875ec4286a24e569b1e015b0473 Open Delete
khj#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
kiki Open Delete
kj Open Delete
kjh Open Delete
kkk Open Delete
kkk#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
kkk#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
kkk#i21ef661e2506d5d0e513dce166c17d49 Open Delete
kkk#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
kpok%C2%B4p Open Delete
l Open Delete
lel Open Delete
lj Open Delete
lkj Open Delete
lkjlkj Open Delete
lkk Open Delete
ll Open Delete
llllllllllllllll Open Delete
lmklk Open Delete
lolo Open Delete
Lorenz du stinker Open Delete
loslos Open Delete
m Open Delete
Marcin Open Delete
Memes Open Delete
miTest Open Delete
mmm Open Delete
moi Open Delete
moj Open Delete
mon exemple Open Delete
mon putain de tableau Open Delete
mon%20putain%20de%20tableau Open Delete
msqdgj Open Delete
mt Open Delete
my_array Open Delete
myarr Open Delete
mytest Open Delete
n Open Delete
Names Open Delete
new Open Delete
New Array Open Delete
New_test_2017-03_03 Open Delete
New%20Array Open Delete
new%2520test Open Delete
ñlkjlkj Open Delete
nmn Open Delete
nmn#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
nmn#i21ef661e2506d5d0e513dce166c17d49 Open Delete
nmn#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
nmn#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
nnnnn Open Delete
Nouveau Open Delete
ñsfkjaldsa Open Delete
o Open Delete
oezjfez Open Delete
Open Delete
ordersCollection Open Delete
Ouiiiiiiiiiiii Open Delete
Ouiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii Open Delete
Ouiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii Open Delete
Ouiiiiiiiiiiiiiiiiiiiiiiiilul Open Delete
pablo Open Delete
PC Open Delete
Pepa Open Delete
peppo Open Delete
perebetes Open Delete
perses#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
perses#i21ef661e2506d5d0e513dce166c17d49 Open Delete
perses#ie025efbbb0738ed01a63b326c174233e Open Delete
po Open Delete
pornhub.com Open Delete
pp Open Delete
pppppii#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
pppppii#i21ef661e2506d5d0e513dce166c17d49 Open Delete
pppppii#i27992875ec4286a24e569b1e015b0473 Open Delete
pppppii#ie025efbbb0738ed01a63b326c174233e Open Delete
pppppp Open Delete
Premier element de test Open Delete
project 1 Open Delete
project%201 Open Delete
Putin Open Delete
qqq Open Delete
qsdfqsdf Open Delete
quantite --1 Open Delete
quantite%20--1 Open Delete
qwehgnhngh Open Delete
qweqw Open Delete
qwerqwerqw Open Delete
qwery2 Open Delete
rdfgdf Open Delete
Recipe Open Delete
rerererere Open Delete
rerwrer Open Delete
resr Open Delete
RET Open Delete
rrrr Open Delete
rrrr#i21ef661e2506d5d0e513dce166c17d49 Open Delete
rrrr#i27992875ec4286a24e569b1e015b0473 Open Delete
rrrr#i5784b3886628c4362594ffa43547edb4 Open Delete
rrrr#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
rrrr#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
rtr Open Delete
saASD Open Delete
saassa Open Delete
sad.asdasd.sdsad Open Delete
sadsad Open Delete
salut les gens Open Delete
samArray Open Delete
sami Open Delete
sample Open Delete
samples Open Delete
sasa Open Delete
sd Open Delete
sdasdafs Open Delete
sdfsdf Open Delete
sdg Open Delete
seeme#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
seeme#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
seeme#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
seeme#ie025efbbb0738ed01a63b326c174233e Open Delete
sfsa Open Delete
sfsdfsd Open Delete
someNewArray#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
someNewArray#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
someNewArray#i21ef661e2506d5d0e513dce166c17d49 Open Delete
someNewArray#i5784b3886628c4362594ffa43547edb4 Open Delete
someNewArray#ie025efbbb0738ed01a63b326c174233e Open Delete
sqd Open Delete
sss Open Delete
ssss Open Delete
Starojitski Open Delete
suck my cock fgts Open Delete
suck%20my%20cock%20fgts Open Delete
t11 Open Delete
Ta mere la grosse choin Open Delete
Ta%2520mere%2520la%2520grosse%2520choin Open Delete
Ta%2520mere%2520la%2520grosse%2520choin#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
Ta%2520mere%2520la%2520grosse%2520choin#i5784b3886628c4362594ffa43547edb4 Open Delete
Ta%2520mere%2520la%2520grosse%2520choin#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
Ta%2520mere%2520la%2520grosse%2520choin#ie025efbbb0738ed01a63b326c174233e Open Delete
tableau cellule unique Open Delete
tableau%20cellule%20unique Open Delete
TATA Open Delete
terst Open Delete
Test Open Delete
test array Open Delete
test34'A=0 Open Delete
testarray Open Delete
teste2 Open Delete
TESTEN Open Delete
Tester Open Delete
testtest Open Delete
the%20test Open Delete
this is an array Open Delete
this%20is%20an%20array Open Delete
tojo Open Delete
toti Open Delete
totototototo Open Delete
try01 Open Delete
tset Open Delete
tttttz Open Delete
tyty Open Delete
tzzttz Open Delete
ui Open Delete
undefined Open Delete
Vai que da Open Delete
Vai%20que%20da Open Delete
vcbbc Open Delete
vcvcvcvcvv Open Delete
vdsvd Open Delete
Volta Dilma Fora Temer Open Delete
Volta%20Dilma%20Fora% Open Delete
Volta%2520Dilma%2520Fora%2520Temer Open Delete
Volta%2520Dilma%2520Fora%2520Temer#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
Volta%2520Dilma%2520Fora%2520Temer#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
Volta%2520Dilma%2520Fora%2520Temer#i2 Open Delete
Volta%2520Dilma%2520Fora%2520Temer#ie025efbbb0738ed01a63b326c174233e Open Delete
Volta+Dilma+Fo Open Delete
Volta+Dilma+Fora+Temer Open Delete
vxvxcvxcv Open Delete
w Open Delete
why doctrine Open Delete
why doctrine on delete not work? Open Delete
why%20doctrine%20on%20delete%20not%20work Open Delete
why%20doctrine%20on%20delete%20not%20work%3F Open Delete
Woop%20wooop Open Delete
www Open Delete
wxc%3Cwxc Open Delete
yytutyutyu Open Delete
zizizizizi Open Delete
zzzz1 Open Delete
zzzzzz Open Delete
тест 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 %}