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
_ Open Delete
___ ☘ Cela fonctionne ☘ Open Delete
___ ☘ Cela fonctionne ☘ Open Delete
____ Open Delete
____________________________1 test Open Delete
_______aaaazz Open Delete
_a_ Open Delete
_Greeting, :D happy 2018 Open Delete
---#i27992875ec4286a24e569b1e015b0473 Open Delete
---#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
? Open Delete
. Open Delete
() Open Delete
@12 Open Delete
#timowashere Open Delete
%237233333 Open Delete
%25237233333#i5784b3886628c4362594ffa43547edb4 Open Delete
%252372uuuu Open Delete
%252372uuuu#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
%252372uuuu#ie025efbbb0738ed01a63b326c174233e Open Delete
%253F#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
%253F#i27992875ec4286a24e569b1e015b0473 Open Delete
%253F#ie025efbbb0738ed01a63b326c174233e Open Delete
%27 Open Delete
%2E Open Delete
%3F Open Delete
%C3%B1lkjlkj Open Delete
%C3%B1sfkjaldsa Open Delete
< 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
<sdsads Open Delete
00000 Open Delete
000tom Open Delete
1 Open Delete
11 Open Delete
11#ie025efbbb0738ed01a63b326c174233e Open Delete
1111 Open Delete
1111#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
1111#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
1111#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
1111#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
1111#ie025efbbb0738ed01a63b326c174233e Open Delete
1111111111111111111111111111111111#i21ef661e2506d5d0e513dce166c17d49 Open Delete
1111111111111111111111111111111111#i27992875ec4286a24e569b1e015b0473 Open Delete
1111111111111111111111111111111111#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
1111111111111111111111111111111111#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
1111111111111111111111111111111111#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
1111Yapi Open Delete
12 Open Delete
123 Open Delete
1231 Open Delete
123123 Open Delete
15 Open Delete
1aa Open Delete
2 Open Delete
2' Open Delete
222 Open Delete
2222%2520example Open Delete
222222 Open Delete
2232323 Open Delete
3 Open Delete
32 Open Delete
33 Open Delete
454 Open Delete
5454 Open Delete
7 Open Delete
86787 Delete
888 Open Delete
8chan.org Open Delete
969 Open Delete
99 Open Delete
999 Open Delete
☘ Cela fonctionne ☘ Open Delete
a Lorenz Open Delete
ñlkjlkj Open Delete
ñsf Open Delete
☘ Cela fonctionne ☘ Open Delete
A1 Open Delete
a2 Open Delete
aa Open Delete
ñlkjlkj Open Delete
ñsfkjaldsa Open Delete
aaaa Open Delete
ñsfkjaldsa Open Delete
aaaaa Open Delete
aaaaaa Open Delete
aaaaaaaaaaaaaa Open Delete
aaaaaaaaaaaaaaaaaaaaaaaaaa Open Delete
aaamine Open Delete
aaamine22222 Open Delete
aaamine22222#i21ef661e2506d5d0e513dce166c17d49 Open Delete
aaamine22222#i5784b3886628c4362594ffa43547edb4 Open Delete
aaamine22222#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
aaamine22222#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
aaamine22222#ie025efbbb0738ed01a63b326c174233e Open Delete
adasdada Open Delete
Addresses Open Delete
adfadf Open Delete
adsfdsf Open Delete
AlgoSucks Open Delete
Alpha Open Delete
any Open Delete
Array Open Delete
array%20new Open Delete
Array2 Open Delete
arrayGilmry Open Delete
as Open Delete
asaasexample Open Delete
asas Open Delete
asd Open Delete
asdaexample Open Delete
asdas Open Delete
asdasd Open Delete
asdasd#i27992875ec4286a24e569b1e015b0473 Open Delete
asdasd#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
asdasdadasd Open Delete
asdasdadasd#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
asdasdadasd#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
asdasdadasd#i5784b3886628c4362594ffa43547edb4 Open Delete
asdasdadasd#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
asdasdadasd#ie025efbbb0738ed01a63b326c174233e Open Delete
asdasdasd Open Delete
asdfasdfasd Open Delete
asdfg Open Delete
AU Open Delete
azazaz Open Delete
balala Open Delete
bbbbbbbbbbb Open Delete
bc Open Delete
bdfdfdfdf Open Delete
bjfhj#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
bjfhj#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
bjfhj#i21ef661e2506d5d0e513dce166c17d49 Open Delete
bjfhj#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
bjfhj#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
bjfhj#ie025efbbb0738ed01a63b326c174233e Open Delete
bla Open Delete
blah Open Delete
blah#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
blah#i5784b3886628c4362594ffa43547edb4 Open Delete
blah#ie025efbbb0738ed01a63b326c174233e Open Delete
born Open Delete
Bra Open Delete
Caracas222 Open Delete
cccio Open Delete
cdcdc Open Delete
cela Open Delete
Cela fonctionne Open Delete
Cela fonctionne pas Open Delete
checks Open Delete
ciao Open Delete
cnes Open Delete
colombo Open Delete
cool Open Delete
crap Open Delete
cups Open Delete
cx Open Delete
cx%3Cwc Open Delete
cxcxx Open Delete
d Open Delete
D happy 2018 Open Delete
D#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
D#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
D#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
D#ie025efbbb0738ed01a63b326c174233e Open Delete
das Open Delete
dasd Open Delete
dasdsa Open Delete
dcdc Open Delete
dd Open Delete
ddazdaz Open Delete
ddd Open Delete
dddd Open Delete
ddddd Open Delete
defrsdf Open Delete
demo Open Delete
dfa#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
dfa#i21ef661e2506d5d0e513dce166c17d49 Open Delete
dfa#i27992875ec4286a24e569b1e015b0473 Open Delete
dfa#i5784b3886628c4362594ffa43547edb4 Open Delete
dfa#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
dfa#ie025efbbb0738ed01a63b326c174233e Open Delete
dfdfdf Open Delete
dfg Open Delete
dfsdf Open Delete
dfvds Open Delete
diego Open Delete
Doom Open Delete
dra Open Delete
dsd Open Delete
dsds Open Delete
dsvfdsfg] Open Delete
e Open Delete
ee Open Delete
ejemplo 2 Open Delete
ejemplo 2017-11-23 Open Delete
eqweqwe Open Delete
erwgfu%C4%B1gj8hl%C4%B1 Open Delete
erwgfuıgj8hlı Open Delete
erwgfuıgj Open Delete
erwgfuıgj8hlı Open Delete
exadasdas Open Delete
exam Open Delete
example Open Delete
example exam Open Delete
example Radu Open Delete
example123 Open Delete
example123#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
example123#i27992875ec4286a24e569b1e015b0473 Open Delete
example123#i5784b3886628c4362594ffa43547edb4 Open Delete
example2 Open Delete
example2222222 Open Delete
example22222222222222 Open Delete
example33333 Open Delete
exampleasfsafasf#i21ef661e2506d5d0e513dce166c17d49 Open Delete
exampleasfsafasf#i27992875ec4286a24e569b1e015b0473 Open Delete
exampleasfsafasf#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
exampleasfsafasf#ie025efbbb0738ed01a63b326c174233e Open Delete
exampledsdsddasds,sad,a,d,as,d,asd,asd Open Delete
examplehjkhjk Open Delete
examplenhnhd Open Delete
exampleRW Open Delete
examplesadfasfasdf Open Delete
examplesdf Open Delete
exampleu Open Delete
exampleuy Open Delete
examplevbnvnhv Open Delete
exampple Open Delete
Existing arr Open Delete
Existing arrays: Open Delete
Existing%20arrays: Open Delete
exkiample Open Delete
fat Open Delete
fc Open Delete
fdasfdaF Open Delete
fdf#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
fdf#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
fdf#i21ef661e2506d5d0e513dce166c17d49 Open Delete
fdf#i27992875ec4286a24e569b1e015b0473 Open Delete
fdf#i5784b3886628c4362594ffa43547edb4 Open Delete
fdf#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
fdf#ie025efbbb0738ed01a63b326c174233e Open Delete
fdgfdgfdgfdgfd Open Delete
fdsdf Open Delete
fdsf Open Delete
fe Open Delete
ff Open Delete
ff d Open Delete
ffff Open Delete
fg Open Delete
fgfdg Open Delete
fgfdgdgdf Open Delete
fgfdgfdgdg Open Delete
fgt Open Delete
Fora Bolsonaro Open Delete
frfrf Open Delete
Fruits Open Delete
fsdfsdf Open Delete
fsgv Open Delete
fuck%20you Open Delete
gdfg Open Delete
gdfg#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
gdfg#i27992875ec4286a24e569b1e015b0473 Open Delete
gdfg#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
geht nicht Open Delete
gfdgdf Open Delete
Ggg Open Delete
ghgtytyt Open Delete
ghjk Open Delete
ghjk#i21ef661e2506d5d0e513dce166c17d49 Open Delete
ghjk#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
ghk Open Delete
gjkl Open Delete
Group B Open Delete
Group%2BC#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
Group%2BC#i27992875ec4286a24e569b1e015b0473 Open Delete
gufc fucvuy Open Delete
Hallo Open Delete
Hello world Open Delete
Hello World ! Open Delete
HEYY%2520:D Open Delete
HEYY%2520:D#i5784b3886628c4362594ffa43547edb4 Open Delete
HEYY%2520:D#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
hg Open Delete
hgkjh Open Delete
hhh Open Delete
hhmm Open Delete
hi%20bitches Open Delete
hjvhj Open Delete
ho Open Delete
http Open Delete
hu Open Delete
hujpizda Open Delete
hyhy Open Delete
i Open Delete
ilesh Open Delete
j Open Delete
jhgfgh Open Delete
jhkl Open Delete
jj Open Delete
jkbhkjh Open Delete
jose Open Delete
jtujjk Open Delete
julio Open Delete
kfhk Open Delete
khj#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
khj#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
khj#i27992875ec4286a24e569b1e015b0473 Open Delete
khj#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
khj#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
kiki Open Delete
kjh Open Delete
kjkjkj Open Delete
kjkk Open Delete
kkik Open Delete
kkk Open Delete
kkk#i21ef661e2506d5d0e513dce166c17d49 Open Delete
kkk#i27992875ec4286a24e569b1e015b0473 Open Delete
kkk#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
kljlk Open Delete
klk Open Delete
klklklkl Open Delete
kln Open Delete
l Open Delete
lj Open Delete
lkj Open Delete
ll Open Delete
lmklk Open Delete
lolo Open Delete
Lorenz du stinker Open Delete
loslos Open Delete
m Open Delete
miTest Open Delete
mjn Open Delete
mmm Open Delete
moi Open Delete
mon exemple Open Delete
mon putain de tableau Open Delete
mon tableau Open Delete
mon%20tableau Open Delete
mp Open Delete
msqdgj Open Delete
my_array Open Delete
mytest Open Delete
n Open Delete
name Open Delete
Names Open Delete
тест Open Delete
New Array Open Delete
new_22 Open Delete
New_test_2017-03_03 Open Delete
New%20Array Open Delete
new%20test Open Delete
nmn#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
nmn#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
nmn#i21ef661e2506d5d0e513dce166c17d49 Open Delete
nmn#ibcac9f4c58199eeaa7ba5c7750b8434b Open Delete
nmn#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
Nouveau Open Delete
ñsfkjaldsa Open Delete
o Open Delete
o%C4%B1 Open Delete
oı Open Delete
oı Open Delete
oezjfez Open Delete
ordersCollection Open Delete
oui Open Delete
pablo Open Delete
PC Open Delete
peppo Open Delete
perses Open Delete
perses#i21ef661e2506d5d0e513dce166c17d49 Open Delete
poiuytre Open Delete
pp Open Delete
pppppii Open Delete
pppppii#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
pppppii#i5784b3886628c4362594ffa43547edb4 Open Delete
pppppii#ie025efbbb0738ed01a63b326c174233e Open Delete
pppppp Open Delete
prabu Open Delete
project 1 Open Delete
project%201 Open Delete
quantite%20--1 Open Delete
question2 Open Delete
qwe Open Delete
qweqw Open Delete
qwert Open Delete
r Open Delete
Recipe Open Delete
resr Open Delete
RET Open Delete
rewq Open Delete
rfermkferkmfe Open Delete
rrr Open Delete
rrrr Open Delete
rrrr#ic3ee8978c60737ab5d058b5a3f6a1b09 Open Delete
rrrr#ie025efbbb0738ed01a63b326c174233e Open Delete
s Open Delete
sad Open Delete
sadsd Open Delete
sami Open Delete
sample Open Delete
sd Open Delete
sdasd Open Delete
sdasdafs Open Delete
sdfsdf Open Delete
sdg Open Delete
SED Open Delete
seeme Open Delete
seeme#i27992875ec4286a24e569b1e015b0473 Open Delete
seeme#ie025efbbb0738ed01a63b326c174233e Open Delete
select Open Delete
seqtest Open Delete
sfd Open Delete
sfdf Open Delete
sfsa Open Delete
sfsdfsd Open Delete
some new array Open Delete
someNewArray Open Delete
someNewArray#i21ef661e2506d5d0e513dce166c17d49 Open Delete
someNewArray#i5784b3886628c4362594ffa43547edb4 Open Delete
someNewArray#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
sqsq Open Delete
ssss Open Delete
ssssssssssssssssssssssssss Open Delete
suck my co Open Delete
suck my cock fgts Open Delete
suck%20my%20cock%20fgts Open Delete
t Open Delete
t11 Open Delete
Ta%20mere%20la%20grosse%20tchoin Open Delete
Ta%2520mere%2520la%2520grosse%2520choin Open Delete
Ta%2520mere%2520la%2520grosse%2520choin#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
Ta%2520mere%2520la%2520grosse%2520choin#i1dcd1cbb0d8eeb1fd3a32dc2aa9c8013 Open Delete
Ta%2520mere%2520la%2520grosse%2520choin#i27992875ec4286a24e569b1e015b0473 Open Delete
Ta%2520mere%2520la%2520grosse%2520choin#i5784b3886628c4362594ffa43547edb4 Open Delete
Ta%2520mere%2520la%2520grosse%2520choin#i8c18088ea4d8dd4d6e5e986bceed35da Open Delete
Ta%2520mere%2520la%2520grosse%2520choin#ie025efbbb0738ed01a63b326c174233e Open Delete
tableau%20cellule%20unique Open Delete
TATA Open Delete
terst Open Delete
tes Open Delete
tesst Open Delete
Test Open Delete
test--1 Open Delete
test22 Open Delete
test34'A=0 Open Delete
teste Open Delete
Tester Open Delete
tesy Open Delete
the test Open Delete
the%20test Open Delete
the+test Open Delete
this%20is%20an%20array Open Delete
try01 Open Delete
ttt Open Delete
tttttz Open Delete
tzzttz Open Delete
uhj Open Delete
ui Open Delete
ukh Open Delete
undefined Open Delete
uu Open Delete
uuu Open Delete
Vai que da Open Delete
Vai%2520que%2520da Open Delete
vcbbc Open Delete
vcvcvcvcvv Open Delete
Volta Di Open Delete
Volta Dilm Open Delete
Volta Dilma Fo Open Delete
Volta Dilma Fora Temer Open Delete
Volta%20Di Open Delete
Volta%2520Dilma%2520Fo Open Delete
Volta%2520Dilma%2520Fora% Open Delete
Volta%2520Dilma%2520Fora%2520Temer Open Delete
Volta%2520Dilma%2520Fora%2520Temer#i1097c8b84b58a65ed6ec7b4f0da3ab67 Open Delete
Volta%2520Dilma%2520Fora%2520Temer#i2 Open Delete
Volta%2520Dilma%2520Fora%2520Temer#i5784b3886628c4362594ffa43547edb4 Open Delete
Volta%2520Dilma%2520Fora%2520Temer#ie025efbbb0738ed01a63b326c174233e Open Delete
VRE Open Delete
vv Open Delete
vxvxcvxcv Open Delete
why doctrine on delete not work Open Delete
wqeqe Open Delete
ww Open Delete
Xbox Series X > PS5 Open Delete
xy Open Delete
You Open Delete
z Open Delete
zzz Open Delete
zzzz Open Delete
zzzz1 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 %}