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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 |
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