Description
Is this a regression?
- Yes, this behavior used to work in the previous version
The previous version in which this bug was not present was
No response
Description
Hello,
https://material.angular.io/components/datepicker/overview#date-range-input-forms-integration
The mat date range input documentation states:
Date range input forms integration
The mat-date-range-input component can be used together with the FormGroup directive from @angular/forms to group the start and end values together and to validate them as a group.
So I'm expecting the form group, grouping start and end date, to update the "global range input" state, but this is not the case.
My use case is to add a customValidator (to limit the number of days between start and end dates) on the formGroup. When the form is in error, I was expecting the form field to be red and to display mat-error, but nothing shows when the form is invalid.
- Is it a bug?
- Is it the normal behavior, and a documentation ambiguity? It would be a nice new feature in this case.
I've found a workaround using ErrorStateMatcher. But it feels like it's supposed to be included in mat date range picker as both inputs are inside, within the formGroup
https://material.angular.io/components/input/overview#changing-when-error-messages-are-shown
Reproduction
Have mat date range picker with a form group validator => only start and end controls are updating displayed form field validity
Reproduction link: https://stackblitz.com/edit/stackblitz-starters-xhx4k1?file=src%2Fmain.ts
Expected Behavior
When formGroup is in error, form field state should be in error and display mat-error
Actual Behavior
When formGroup is in error, form field state is valid and no mat-error is displayed
Environment
- Angular: 18
- CDK/Material: 18