Object is possibly NULL

Ramco Ramco

In below code i an getting above error on below line

Date of joining must be after date of birth.


                Choose a date
                
                MM/DD/YYYY
                
                
            
            
                Choose a date
                
                MM/DD/YYYY
                
                
                
                    Date of joining must be after date of birth.

Thanks

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Ramco Ramco2y ago

Hi jayraj

Can u ple help . Below is my Directive

export class DateComparisonDirective implements Validator {
  @Input('appDateComparison') appDateComparison: string; // FormControlName for DOB

  validate(control: AbstractControl): ValidationErrors | null {
    const dobControl = control.root.get(this.appDateComparison);

    if (!dobControl || !dobControl.value || !control.value) {
      return null;
    }

    const dob = new Date(dobControl.value);
    const doj = new Date(control.value);

    if (doj <= dob) {
      return { 'dateComparison': true }; // Validation failed
    }

    return null; // Validation passed
  }

Thanks

Jayraj Chhaya2y ago
The error you are facing on the line
is likely due to the way you are handling the date comparison validation in your Angular component.

To resolve this issue, ensure that the appDateComparison directive is correctly implemented to compare the date of joining (doj) with the date of birth (dob). Make sure the custom validator function associated with appDateComparison is correctly validating the dates and setting the appropriate error if the condition is not met.

Check the implementation of the appDateComparison directive and the custom validator function to ensure they are correctly comparing the dates. Additionally, verify that the form controls dob and doj are correctly bound to the date inputs in the template.