angular/packages/forms
Miles Malerba b8314bd340 feat(forms): add experimental signal-based forms (#63408)
This commit introduces an experimental version of a new signal-based forms API for Angular. This new API aims to explore how signals can be leveraged to create a more declarative, intuitive, and reactive way of handling forms.

The primary goals of this new signal-based approach are:

*   **Signal-centric Design:** Place signals at the core of the forms experience, enabling a truly reactive programming model for form state and logic.
*   **Declarative Logic:** Allow developers to define form behavior, such as validation and conditional fields, declaratively using TypeScript. This moves logic out of the template and into a typed, testable schema.
*   **Developer-Owned Data Model:** The library does not maintain a copy of data in a form model, but instead read and write it via a developer-provided `WritableSignal`, eliminating the need for applications to synchronize their data with the form system.
*   **Interoperability:** A key design goal is seamless interoperability with existing reactive forms, allowing for incremental adoption.
*   **Bridging Template and Reactive Forms:** This exploration hopes to close the gap between template and reactive forms, offering a unified and more powerful approach that combines the best aspects of both.

This initial version of the experimental API includes the core building blocks, such as the `form()` function, `Field` and `FieldState` objects, and a `[control]` directive for binding to UI elements. It also introduces a schema-based system for defining validation, conditional logic, and other form behaviors.

Note: This is an early, experimental API. It is not yet complete and is subject to change based on feedback and further exploration.

Co-authored-by: Kirill Cherkashin <kirts@google.com>
Co-authored-by: Alex Rickabaugh <alxhub@users.noreply.github.com>
Co-authored-by: Leon Senft <leonsenft@users.noreply.github.com>
Co-authored-by: Dylan Hunn <dylhunn@gmail.com>
Co-authored-by: Michael Small <michael-small@users.noreply.github.com>

PR Close #63408
2025-08-28 09:02:43 -07:00
..
signals feat(forms): add experimental signal-based forms (#63408) 2025-08-28 09:02:43 -07:00
src feat(forms): Add FormArrayDirective (#55880) 2025-08-21 09:38:37 -07:00
test build: rename defaults2.bzl to defaults.bzl (#63383) 2025-08-25 15:45:01 -07:00
BUILD.bazel build: rename defaults2.bzl to defaults.bzl (#63383) 2025-08-25 15:45:01 -07:00
index.ts refactor: update license text to point to angular.dev (#57901) 2024-09-24 15:33:00 +02:00
package.json fix(core): update min Node.js support to 20.19, 22.12, and 24.0 (#61499) 2025-05-20 14:15:13 +00:00
PACKAGE.md docs: Use new Urls to drop the docs url mapper (#55043) 2024-04-09 12:23:09 -07:00
public_api.ts refactor: update license text to point to angular.dev (#57901) 2024-09-24 15:33:00 +02:00