[Form] The form lifecycle

[alexandresalome]

Hello awesome team 👋

During SymfonyCon Vienna and SymfonyOnline, I presented "Symfony Form - Practical use cases" (slides).

In this presentation, some information could be beneficial to the documentation. Especially, those slides:

• The form lifecycle - slide 38
• Recursive form lifecycle (static) - slide 41
• Recursive form lifecycle (dynamic) - slide 44

The narrative around those is about:

Form lifecycle is a recursive 2-dimension problem.

Dimension 1: the form lifecycle, with major events illustrated slide 38
Dimension 2: the form tree, that is a composite tree (i.e. each node has children)

In a static manner (slide 41), the parent propagate calls to the children to recursively handle events

In a dynamic manner (slide 44), the children are created dynamically, and have special lifecycle management

Those materials are free to transform and reuse, basically. I essentially want to contribute that to the documentation.

How should I integrate that into the Symfony documentation?

1. A new page "The form lifecycle explained" (misc. section in Learn more)
2. A section "The form lifecycle" on the main form documentation

Thank you Symfony <3