Troubleshooting: Issue with Angular 2 bidirectional data binding on two input fields

Hi there, I am encountering an issue with the following code snippet:

<input type="radio" value="{{commencementDate.value}}" id="bankCommencementDateSelect" formControlName="bankCommencementDate">

<input #commencementDate id="bankCommencementDateInput" formControlName="bankCommencementDateInput" type="date" format="DD-MM-YYYY" min="{{ today | date: 'y-MM-dd' }}"/>

Currently, the value from the date input is supposed to be placed into the radio input. However, when I try to save the form, the value does not get saved and it triggers a validation error for the required field in the radio input.

I am looking to set the value of the radio button equal to whatever is entered in the date input so that it functions properly upon saving. I have attempted different approaches without success.

I would greatly appreciate any assistance on this matter. Thank you!

javascripthtmlangular

Answer №1

If you are using a formControlName, the proper method to retrieve the value is by doing the following:

<input type="radio" [value]="myForm.get('bankCommencementDateInput').value" id="bankCommencementDateSelect" formControlName="bankCommencementDate">

Answer №2

One effective method for updating values in Angular reactive forms is by utilizing a class component and the setValue or patchValue functions.

You have the ability to create a function that updates a value (using patchValue) from a class component upon triggering a keyup event.

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