Can models drive reactive forms by automatically mapping them to FormGroups?

Is it possible to automatically generate a FormGroup from a Model? If I have a Model with multiple Properties:

Model: Person

firstName: string,
lastName: string,
street: string,
country: string
....

And I would like to create a basic FormGroup based on it:

Form: FormGroup

firstName: FormControl,
lastName: FormControl,
street: FormControl,
country: FormControl
....

It feels cumbersome to me to manually specify a FormControl / FormGroup / FormArray for each property in the Model:

formBuilder.group({
  firstName: person.firstName,
  lastName: person.lastName,
  street: person.street,
  country: person.country,
  ...
});

Every time the Backend API changes, I need to update both the model and the form mapping. Is there a tool or generator available that can automate the creation of a FormGroup and its mapping?

Answer №1

const myFormGroup = formBuilder.group({});

person.forEach(
        (property) => {
            myFormGroup.addControl(property, new FormControl(person[property], Validators.compose([Validators.required])));
        }
    );

This code snippet sets up a FormGroup with dynamic FormControls for each property in the 'person' object. It should be noted that the validators may need to be adjusted accordingly for each specific property.

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