How to override the properties of an existing field in an inherited form in a Form Component?

Question

css

Symfony 6.0.
I can not find an example in the documentation or on SO - how can I override the properties of one field in an inherited form in symphony? Using form events does not seem to be a very suitable tool, making two forms in parallel from the base one is inefficient.
Example:

<?php

class ArticleFormType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('title', TextType::class, ['help' => 'Choose something catchy'])
            ->add('content', null, ['rows' => 15]);
    }
}

class CustomArticleFormType extends ArticleFormType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('content', null, ['rows' => 25]);

        parent::buildForm($builder, $options);
    }
}

Please share links to a solution to a similar question, I don’t understand how to find it - the examples in the documentation talk about either FormExtension or form events, but they are needed for other tasks.

Answer 1

<div class="example"></div>

.example {
  width: 300px;
  height: 50px;
  background: yellow;
  cursor: pointer;
  position: relative;

  margin: 50px auto;
}
.example:before {
  content: '';
  display: block;
  width: 0;
  height: 5px;
  background: red;
  position: absolute;
  left: 0;
  bottom: 0;
  transition: .5s;
}
.example:hover:before {
  width: 100%;
}

codepen.io/anon/pen/vLarpB

Answer 2

Here are the ready made solutions. You can customize for your purposes.
Here is 1 option.
Effect No. 10, on a blue background
Here is the 2nd option.
Effect #3 Surinami

Answer 3

I'm not a symphony expert, but this won't work - you must first call parent::buildForm(); and then replace $builder->add(content', $builder->get('content')->getType(), $builder->get('content')->getOptions()),
and from banal LSP'shnogo - you can always inherit the class and expand the visibility of its properties.
+ one of the symphony developers said that this is an outdated way and you need to pass a builder, not a string, but it's better to talk to them yourself, I don't always understand them.