`How can you ensure Angular2 form controls are interdependent and valid?`

Currently, I am in the process of developing a time picker component that will connect to a reactive form control. My goal is for the form control to be considered invalid if the end time is set before the start time. Although Angular provides built-in validators, I am looking for guidance on how to validate against another form control. Any help or direction on this matter would be greatly appreciated.

Answer №1

Here is my strategy:

  • Create a validation function within the FormGroup that encompasses both controls.
  • Within this function, utilize the passed-in FormGroup to access the values of the two FormControl instances and conduct the necessary validation checks.

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