Angular forms: pass error to form from one of group
I'm sorry if it's duplicate of some question, I didn't find any solution for my problem.
I have two form groups from @angular/forms in Angular 5 app. One of them has custom validator that set an error. One of group has error and form is invalid, but form doesn't has any errors inside. How can I prevent it and display error correctly?
Creating form
private createForm() {
const groups = {};
this.groupArray.forEach((item, index) => {
const group: SomModel<FormControl> = { thing: this.fb.control(thing.id, [Validators.required]) };
groups['thing' + index] = index === 0 ?
this.fb.group(group) :
this.fb.group(group, { validator: this.thingMatchValidator(groups['thing' + (index - 1)].controls.thing) });
});
this.form = this.fb.group(groups);
}
Validator
thingMatchValidator(from: Dictionary<FormControl>): ValidatorFn {
return (to: AbstractControl): { [key: string]: any } => { // seems that I soudn't use AbstractControl because I have FormGroup here
const thingFrom = from.thing.value;
const thingTo = to.value.thing;
const test = thingFrom && thingTo && thingFrom === thingTo ? { portMatch: true } : null;
return test;
};
}
Update:
The field that I need to validate stayed valid, but form is invalid.
angular typescript angular-reactive-forms
asked Nov 21 at 10:24
hofshteyn
939
add a comment |
I'm sorry if it's duplicate of some question, I didn't find any solution for my problem.
I have two form groups from @angular/forms in Angular 5 app. One of them has custom validator that set an error. One of group has error and form is invalid, but form doesn't has any errors inside. How can I prevent it and display error correctly?
Creating form
private createForm() {
const groups = {};
this.groupArray.forEach((item, index) => {
const group: SomModel<FormControl> = { thing: this.fb.control(thing.id, [Validators.required]) };
groups['thing' + index] = index === 0 ?
this.fb.group(group) :
this.fb.group(group, { validator: this.thingMatchValidator(groups['thing' + (index - 1)].controls.thing) });
});
this.form = this.fb.group(groups);
}
Validator
thingMatchValidator(from: Dictionary<FormControl>): ValidatorFn {
return (to: AbstractControl): { [key: string]: any } => { // seems that I soudn't use AbstractControl because I have FormGroup here
const thingFrom = from.thing.value;
const thingTo = to.value.thing;
const test = thingFrom && thingTo && thingFrom === thingTo ? { portMatch: true } : null;
return test;
};
}
Update:
The field that I need to validate stayed valid, but form is invalid.
angular typescript angular-reactive-forms
asked Nov 21 at 10:24
hofshteyn
939
Can you post the code where you have added the validator in your form builder ?
– Niladri
Nov 21 at 11:03
@Niladri I updated question
– hofshteyn
Nov 21 at 11:28
add a comment |
I'm sorry if it's duplicate of some question, I didn't find any solution for my problem.
I have two form groups from @angular/forms in Angular 5 app. One of them has custom validator that set an error. One of group has error and form is invalid, but form doesn't has any errors inside. How can I prevent it and display error correctly?
Creating form
private createForm() {
const groups = {};
this.groupArray.forEach((item, index) => {
const group: SomModel<FormControl> = { thing: this.fb.control(thing.id, [Validators.required]) };
groups['thing' + index] = index === 0 ?
this.fb.group(group) :
this.fb.group(group, { validator: this.thingMatchValidator(groups['thing' + (index - 1)].controls.thing) });
});
this.form = this.fb.group(groups);
}
Validator
thingMatchValidator(from: Dictionary<FormControl>): ValidatorFn {
return (to: AbstractControl): { [key: string]: any } => { // seems that I soudn't use AbstractControl because I have FormGroup here
const thingFrom = from.thing.value;
const thingTo = to.value.thing;
const test = thingFrom && thingTo && thingFrom === thingTo ? { portMatch: true } : null;
return test;
};
}
Update:
The field that I need to validate stayed valid, but form is invalid.
angular typescript angular-reactive-forms
asked Nov 21 at 10:24
hofshteyn
939
I'm sorry if it's duplicate of some question, I didn't find any solution for my problem.
I have two form groups from @angular/forms in Angular 5 app. One of them has custom validator that set an error. One of group has error and form is invalid, but form doesn't has any errors inside. How can I prevent it and display error correctly?
Creating form
private createForm() {
const groups = {};
this.groupArray.forEach((item, index) => {
const group: SomModel<FormControl> = { thing: this.fb.control(thing.id, [Validators.required]) };
groups['thing' + index] = index === 0 ?
this.fb.group(group) :
this.fb.group(group, { validator: this.thingMatchValidator(groups['thing' + (index - 1)].controls.thing) });
});
this.form = this.fb.group(groups);
}
Validator
thingMatchValidator(from: Dictionary<FormControl>): ValidatorFn {
return (to: AbstractControl): { [key: string]: any } => { // seems that I soudn't use AbstractControl because I have FormGroup here
const thingFrom = from.thing.value;
const thingTo = to.value.thing;
const test = thingFrom && thingTo && thingFrom === thingTo ? { portMatch: true } : null;
return test;
};
}
Update:
The field that I need to validate stayed valid, but form is invalid.
angular typescript angular-reactive-forms
angular typescript angular-reactive-forms
asked Nov 21 at 10:24
hofshteyn
939
asked Nov 21 at 10:24
hofshteyn
939
edited Nov 21 at 12:21
asked Nov 21 at 10:24
hofshteyn
939
asked Nov 21 at 10:24
hofshteyn
939
asked Nov 21 at 10:24
hofshteyn
939
939
Can you post the code where you have added the validator in your form builder ?
– Niladri
Nov 21 at 11:03
@Niladri I updated question
– hofshteyn
Nov 21 at 11:28
add a comment |
Can you post the code where you have added the validator in your form builder ?
– Niladri
Nov 21 at 11:03
@Niladri I updated question
– hofshteyn
Nov 21 at 11:28
Can you post the code where you have added the validator in your form builder ?
– Niladri
Nov 21 at 11:03
Can you post the code where you have added the validator in your form builder ?
– Niladri
Nov 21 at 11:03
@Niladri I updated question
– hofshteyn
Nov 21 at 11:28
@Niladri I updated question
– hofshteyn
Nov 21 at 11:28
add a comment |
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Can you post the code where you have added the validator in your form builder ?
– Niladri
Nov 21 at 11:03
@Niladri I updated question
– hofshteyn
Nov 21 at 11:28