59 Commits

Author SHA1 Message Date
Matthieu Riegler 82d556a8fb fix(forms): Ensure the control instruction comes after the other bindings
Prior to this change, binding to radio value was sensitive to the order in which `value` & `formField` where binding in the template.
The compiler change makes that order non-important.

fixes #66402

(cherry picked from commit 65fa5b5439)
2026-01-12 21:49:23 +00:00
Miles Malerba 0055f3cc79 fix(forms): Rename signal form [field] to [formField]
This completes the rename started in #66136. `[field]` is too generic of
a selector for the forms system to own, and likely to cause naming
collisions with existing components. Therefore it is being renamed to
`[formField]`

(cherry picked from commit 5671f2cc07)
2026-01-09 22:33:13 +00:00
Miles Malerba e3fba182f9 feat(forms): add [formField] directive
This will replace the `[field]` directive, since `[field]` is a very
generic name for signal forms to commandeer

refactor(forms): hook up `formField` directive in compiler

Hooks up the `formField` direcive to get the same treatment as the
`field` directive in the compiler.

apply updated formatting

(cherry picked from commit 2d85ae5811)
2026-01-06 17:21:09 -05:00
Leon Senft af1d4acb9d refactor(forms): bind native properties on interop controls
The framework will now bind all field state properties to their
corresponding native properties (if any) on interop form controls (those
using `ControlValueAccessor`), excluding those handled explicitly by
`ControlValueAccessor` such as `disabled`.

(cherry picked from commit 82a2de201f)
2026-01-06 13:12:21 -05:00
Leon Senft 0e8b9d8cde refactor(forms): bind field properties to all directives on interop controls
The framework will now bind the field state properties to all matching
directive inputs on form controls using Reactive Forms'
`ControlValueAccessor`.

(cherry picked from commit 15bddbdcda)
2026-01-06 13:12:21 -05:00
Leon Senft ff37a13913 refactor(forms): bind field properties to all directives on custom controls
The framework will now bind the field state properties to all matching
directive inputs on custom form controls.

(cherry picked from commit 0c8f15d546)
2026-01-06 13:12:21 -05:00
Leon Senft a4ba820d36 refactor(forms): bind field properties to all directives on native controls
Since the `Field` directive manages binding `FieldState` properties to
the underlying form control automatically, the type checker prohibits
explicit bindings to the same properties to avoid conflicts. This proved
problematic in cases where developers wanted to bind these properties to
the inputs of other directives on form controls. Now the framework will
bind the field state properties to all matching directive inputs on
native controls.

Fix #65617

(cherry picked from commit c149f47ef6)
2026-01-06 13:12:21 -05:00
Leon Senft 85621f11e1 test(forms): add test coverage for binding errors to custon controls
This input was missing dedicated test coverage.

(cherry picked from commit e7745dc9dd)
2026-01-02 08:09:39 +01:00
Leon Senft 6d167bd64c test(forms): remove duplicate test case
We had two test cases that tested the `Field` directive synchronizes
with a custom checkbox control components.

(cherry picked from commit 8832fc01b2)
2026-01-02 08:09:39 +01:00
Leon Senft ec110f170b fix(forms): allow custom controls to require pending input
* Allow custom controls to make `pending` a required input
* Refactor test for `pending` input to be consistent with other control
  properties
* Test that `pending` inputs are reset when the field binding changes

(cherry picked from commit 1a4c3eb1d0)
2026-01-02 08:09:39 +01:00
Leon Senft 79d16919a5 test(forms): remove obsolete test case
There's no longer a need to test that inputs are set before
initialization on custom controls now that required inputs are
supported.

(cherry picked from commit 9ad603fa11)
2026-01-02 08:09:39 +01:00
Leon Senft 8c83266816 test(forms): refactor and improve test coverage for disabledReasons input
* Refactor test for `disabledReasons` input to be consistent with other control
  properties
* Test that `disabledReasons` inputs are reset when the field binding changes

(cherry picked from commit 4f73a350a5)
2026-01-02 08:09:39 +01:00
Leon Senft 561772b152 fix(forms): allow custom controls to require dirty input
* Allow custom controls to make `dirty` a required input
* Refactor test for `dirty` input to be consistent with other control
  properties
* Test that `dirty` inputs are reset when the field binding changes

(cherry picked from commit 89c37f1f7f)
2026-01-02 08:09:39 +01:00
Leon Senft 929306e658 test(forms): refactor and improve test coverage for invalid input
* Refactor test for `invalid` input to be consistent with other control
  properties
* Test that `invalid` inputs are reset when the field binding changes

(cherry picked from commit b563b5cfc2)
2026-01-02 08:09:39 +01:00
Leon Senft f0fb1d8581 fix(forms): allow custom controls to require hidden input
* Allow custom controls to make `hidden` a required input
* Refactor test for `hidden` input to be consistent with other control
  properties
* Test that `hidden` inputs are reset when the field binding changes

(cherry picked from commit 82edf18427)
2026-01-02 08:09:38 +01:00
Leon Senft 9748b0d5da fix(forms): support custom controls with non signal-based models
* Recognize directives with non signal-based models as valid custom controls
* Relax type checker to allow non signal-based models

The `FormValueControl` and `FormCheckboxControl` interfaces still
require a `model()`-input, however, a custom control need not implement
either interface to be bound by the `Field` directive.

All of the following examples can be used to define a custom control:

```ts
// Preferred: model()
class MyFormControl implements FormValueControl<string> {
  readonly value: model.required<string>();
}

// Supported: input() + output()
class MyFormControl {
  readonly value: input.required<string>();
  readonly valueChange: output<string>();
}

// Supported: @Input() + @Output()
class MyFormControl {
  @Input({required: true}) value!: string;
  @Output() valueChange: new EventEmitter<string>();
}
```

The latter two may still choose to implement `FormUiControl` for other
properties, but again it is not required.

Fix #65478

(cherry picked from commit cb09fb8308)
2026-01-02 08:09:07 +01:00
Matthieu Riegler feed89e83c ci: reformat files
This is after we've slightly changed a rule in #66056

(cherry picked from commit 6270bba056)
2025-12-16 14:44:25 -08:00
Miles Malerba 729b96476b refactor(forms): rename field to fieldTree in FieldContext and ValidationError
BREAKING CHANGE:

(cherry picked from commit ae0c59028a)
2025-12-16 10:26:26 -08:00
Miles Malerba 81772b420d feat(forms): pass field directive to class config
Updates signal forms to pass the full `Field` directive to the class
configuration functions, rather than just the state. This allows
developers to take the element as well as the state into consideration
when deciding classes to apply.

Closes #65762

BREAKING CHANGE: The shape of `SignalFormsConfig.classes` has changed

Previously each function in the `classes` map took a `FieldState`. Now
it takes a `Field` directive.

For example if you previously had:
```
provideSignalFormsConfig({
  classes: {
    'my-valid': (state) => state.valid()
  }
})
```

You would need to update to:
```
provideSignalFormsConfig({
  classes: {
    'my-valid': ({state}) => state().valid()
  }
})
```

(cherry picked from commit 348f149e8b)
2025-12-12 08:07:57 -08:00
kirjs 6d7475582f fix(forms): Reuse key in parent in compat structure
This fixes the "Compat nodes do not use keyInParent." error when trying to bind compatField.

(cherry picked from commit 179b4cba67)
2025-12-09 12:59:27 -08:00
cexbrayat 55fc677cef fix(forms): add signals for dirty, hidden, and pending states in custom controls
FormUiControl states that hidden, pending and dirty will be bind in custom controls, but this is currently not the case.

Fixes #65575

(cherry picked from commit 9fe9566581)
2025-12-08 10:30:48 -08:00
SkyZeroZx 6b4ab876e8 feat(forms): Allows transforms on FormUiControl signals
Extends the `FormUiControl` interface to allow `InputSignalWithTransform` in addition to `InputSignal` for its properties.

Fixes #65756

(cherry picked from commit 7d1e502345)
2025-12-03 15:13:06 +01:00
Leon Senft a5dbd4b382 fix(forms): support dynamic [field] bindings (#65599)
Support binding a `Field` directive to a component created dynamically
with `createComponent()`.

Fix #64632

PR Close #65599
2025-12-03 15:10:49 +01:00
Matthieu Riegler 017672f742 refactor(compiler): Generate the controlCreate instruction after the native element has been created
This is necessary to exclude a race condition where the MutationObserver initialized by the instruction fired before the inputs are binded.

fixes #65678

(cherry picked from commit f35b2ef47c)
2025-12-02 12:59:53 +01:00
Miles Malerba 7d5c7cf99a feat(forms): add DI option for classes on Field directive
Adds a DI configuration option for signal forms that allows the
developer to specify CSS classes that should be automatically added
by the `Field` directive based on the field's status.

(cherry picked from commit c70e246c23)
2025-11-25 10:33:41 -05:00
Leon Senft 8acf5d2756 fix(forms): allow dynamic type bindings on signal form controls
The type checker will no longer prohibit binding the Signal Forms `[field]`
directive to an input with a dynamic `[attr.type]` or `[type]` binding.

(cherry picked from commit 3a1eb07c46)
2025-11-25 09:16:01 -05:00
Leon Senft 4845a33018 refactor(forms): support custom control directives
Support binding `[field]` to directives that implement
`FormValueControl` or `FormCheckboxControl`.

The `[field]` binds to whichever directive (or component) matches first in the
event there are multiple implementations. We are considering whether to make
this an error state, which could be reported during type checking.

Closes #63910, Closes #64992

(cherry picked from commit f97a1d4856)
2025-11-24 13:48:20 -05:00
Leon Senft e682f00e29 refactor(forms): reduce boilerplate needed to define custom controls
An early piece of feedback received regarding custom controls hosted on
native inputs was that they required a lot of boilerplate to bind
`FieldState` properties. Each property required an input to accept the
property, and a host binding to forward it to the native control.

(cherry picked from commit c727df5d38)
2025-11-17 17:41:02 +00:00
Leon Senft d89e522a1f fix(forms): debounce updates from interop controls
* Apply any debounce rules to updates from interop controls (if configured).
* Add tests to ensure debouncing works for all control types (native, custom,
  and interop).

(cherry picked from commit b1037ec2f0)
2025-11-17 16:37:29 +00:00
Leon Senft 8e988124ab test(forms): [field] inputs on components should just pass through
Test that a component with a bound `[field]` input is not treated as a
control, and that `fieldBinding` does not include the corresponding
`Field` instance.

(cherry picked from commit acb78eeb7a)
2025-11-14 16:37:45 +00:00
Kristiyan Kostadinov cc25f96f02 test(forms): fix type checking errors in signal form tests
Fixes some type checking errors in the signal forms tests that accumulated while there wasn't any type checking.

(cherry picked from commit 10915f2f5f)
2025-11-07 11:57:53 -08:00
Miles Malerba 60ce31fb62 test(forms): re-enable some disabled tests
Adjusts test behavior to reflect current implementation and enables them

(cherry picked from commit fa02d96508)
2025-11-06 17:41:31 +00:00
Miles Malerba d1f4c8c18c refactor(forms): improved select support
When we set the `value` on a `<select>` element we're really just
setting the selected `<option>`. It treats the selected option as the
source of truth, rather than the actual value. This means that if
options are added or removed or their value changes, the `<select>` may
wind up with a different `value` than what's in our model.

This PR resolves this issue by adding a `MutationObserver` to the select
that is used to resync its value to the model whenever the options may
have changed.

(cherry picked from commit 194b41199b)
2025-11-06 15:49:09 +00:00
Leon Senft 507b3466ee perf(forms): implement change detection for field control bindings
For each field state property, check if it has changed since the last
time it was checked before writing it the corresponding form control
property.

The `pattern` and `required` properties of the field state now return a
default value rather than `undefined` if not defined by metadata.

(cherry picked from commit 41be02da2f)
2025-11-04 16:11:33 -08:00
Matthieu Riegler a1ac9a6415 fix(forms): interop supports CVAs with signals (#64618)
The directive implemnetation might set CVA values during the template evaluation. Since the template is a reactive context we need to untrack when setting the CVA values to prevent writing to signals in a reactive context.

fixes #64614

PR Close #64618
2025-10-24 09:31:39 +02:00
Miles Malerba 0af83e6855 test(forms): test reactive iteration over array field (#64113)
Adds a test that verifies @for iteration over an array field is actually
reactive to new items being added to the array.

PR Close #64113
2025-10-24 09:29:29 +02:00
Leon Senft fd9af2afaf fix(forms): only propagate schema defined properties from field to control (#64446)
Prior to this change, `FieldState` defined a signal for each built-in
property. This unfortunately meant that the `Field` directive had no way
of knowing which property had actually been defined in the schema, and
would thus attempt to propagate them all to the bound form control. This
meant that the default values of these signals would override the
default or template defined values of these control properties.

Now these properties are `undefined` by default, and only initialized if
defined in the schema. Thus the `Field` directive will not attempt to
bind any properties that aren't explicitly managed by the schema.

PR Close #64446
2025-10-21 17:38:34 +00:00
Leon Senft 4261a8c583 refactor(forms): use FormValueControl instead of FormUiControl (#64446)
`FormUiControl` is the base type used for shared properties of
`FormValueControl` and `FormCheckboxControl`.

PR Close #64446
2025-10-21 17:38:34 +00:00
Leon Senft 6fca0e03ff test(forms): propagate pattern property to custom control input (#64446)
Note that unlike the other built-in properties, `pattern` is not
propagated to native controls so the lack of symmetry with other
property tests is intentional.

PR Close #64446
2025-10-21 17:38:34 +00:00
cexbrayat 9c5e969f51 fix(forms): bind invalid input in custom controls (#64526)
FormUiControl has an `invalid` input signal, but it was not bound by the control instructions.

PR Close #64526
2025-10-21 17:37:58 +00:00
Leon Senft 505bde1fed fix(forms): mark field as dirty when value is changed by ControlValueAccessor (#64471)
This corresponds with fixes made for native and custom signal form
controls: https://github.com/angular/angular/pull/64483.

PR Close #64471
2025-10-20 15:35:42 +00:00
Leon Senft 94b0afec00 fix(forms): implement interoperability between signal forms and reactive forms (#64471)
Add support for interoperability between signal forms and reactive forms that
commit effccffde0 had removed.

A signal forms field can once again be bound to any element or component with a
`ControlValueAccessor`.

PR Close #64471
2025-10-20 15:35:42 +00:00
Leon Senft 3529877772 fix(forms): mark field as dirty when value is changed by a bound control (#64483)
Fix https://github.com/angular/angular/issues/64465.
Fix https://github.com/angular/angular/issues/63623.

PR Close #64483
2025-10-17 16:02:16 +00:00
Leon Senft 348a8f3195 test(forms): remove redundant test cases (#64483)
These were made redundant by https://github.com/angular/angular/pull/63884.

PR Close #64483
2025-10-17 16:02:16 +00:00
Leon Senft e9740662c3 test(forms): field directive marks field as touched on 'blur' events (#64485)
This was implemented but missing a test case.

PR Close #64485
2025-10-17 14:53:02 +00:00
Kristiyan Kostadinov ab415f3d7f fix(core): control not recognized when input has directive injecting ViewContainerRef (#64368)
When a directive injects a `ViewContainerRef`, the runtime inserts a container that was throwing off the logic that recognizes native controls.

These changes switch to check if the node is a native control through the `TNode`. This also makes it a bit less prone to breaking during SSR.

Fixes #64362.

PR Close #64368
2025-10-14 09:29:58 -07:00
Leon Senft 32f86d35f7 perf(forms): optimize [field] binding instructions (#64351)
Caches information about the kind of form control that a `TNode`
represents in `TNodeFlags`. This avoids redundant computations on
subsequent template create and update passes.

Renames the `INVALID_CONTROL_HOST` error code to
`INVALID_FIELD_DIRECTIVE_HOST` for clarity and adds a test for it.

PR Close #64351
2025-10-13 13:02:17 -07:00
Miles Malerba 2fdd4da2a8 refactor(forms): rename the control directive to the field directive (#64300)
Renames the control directive and the input that users set to bind a
field to a UI control.

Previously users would do:

```
<input [control]="someField">
```

Now users will do:

```
<input [filed]="someField">
```

PR Close #64300
2025-10-13 08:59:13 -07:00
Miles Malerba 0acc91ef51 refactor(forms): move files in preparation for rename (#64300)
Renames several files related to the "control" directive to reflect its
new name, the "field" directive

PR Close #64300
2025-10-13 08:59:13 -07:00
Leon Senft 4c264c949a test(forms): make custom controls in test implement FormUiControl (#63884)
Fix type issues revealed by implementing the expected interface.

PR Close #63884
2025-10-09 05:15:21 -07:00