Add nested fields form type, which stores multiple nested fields, groups of fields and collections of fields in one json field

[mesiarm]

Feature Request

Example of usage :

protected function configureFormFields(FormMapper $formMapper): void
    {
        $formMapper->add('contactInfo', NestedFieldsType::class, [
            'subfields' => [
                [
                    'items', CollectionType::class, [
                    'subfields' => [
                        ['title', TextType::class],
                        ['image', ModelListType::class, ['link_parameters' => ['context' => 'post_thumbnail']]],
                    ]
                ]
                ],
                ['group', GroupType::class, [
                    'subfields' => [
                        ['title', TextType::class],
                        ['image', ModelListType::class, ['link_parameters' => ['context' => 'post_thumbnail']],
                        ]
                    ]
                ],
                ],
                ['title', TextType::class],
                ['content', CKEditorType::class],
            ]]);
    }

Example of resulting json:

{
  "items": [
    {
      "title": "Test",
      "image": "image.png"
    },
    {
      "title": "Test 2",
      "image": "image.png"
    },
    {
      "title": "Test 3",
      "image": "image.png"
    }
  ],
  "group": {
    "title": "Test",
    "image": "image.png"
  },
  "title": "Test",
  "content": "<p>Test <strong>Bold</strong></p>"
}

[VincentLanglet]

FormMapper field type are just working like a basic Symfony FormType. So you can implement you own FormType.

then it will be easy to provide a PR to https://github.com/sonata-project/form-extensions

[mesiarm]

Maybe It´s simmilar to the ImmutableArrayType

[github-actions[bot]]

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