What is the process for defining a default value for a template-driven form input in Angular 2?

I have a simple input element in my form that requires a default initial value to be set.

<input type="number" name="interest_rate" [(ngModel)]="interest_rate">

In my code, I included

this.form.controls['interest_rate'].patchValue(this.assumptions.interest_rate*100);

However, I am encountering the following error:

Error: Error in :0:0 caused by: Cannot read property 'patchValue' of undefined

Answer №1

If you want to establish a default value, simply assign the interest_rate property within the component.

@Component({
  ...
  template: `<input type="number" name="interest_rate" [(ngModel)]="interest_rate">`
})

class N {
   interest_rate = 4;
}

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