Validation Form Controls

Here is a piece of code that works for me:

this.BridgeForm = this.formBuilder.group({
    gateway: ["", [Validators.required, Validators.pattern(this.ipRegex)]],
});

However, I would like to provide more detail about the properties:

this.BridgeForm = this.formBuilder.group({
    gateway: {
        value: "", disabled: false,
        Validators: [
            Validators.required,
            Validators.pattern(this.ipRegex),
        ]
    },
});

Unfortunately, whenever I try the latter version, I encounter an error in my console:

ERROR Error: The MaskedTextBox component supports only string values.

The problem seems to be related to the validators property. I am unable to understand how it should be used based on the information provided in the official documentation.

Answer №1

Make sure to include a FormControl for each property in your form values. The main object (form) should create a FormGroup instance, and each property should have its own FormControl where you can set the necessary validators, disabled status, etc.

Below is the updated syntax tailored to your specific example:

this.bridgeForm = this.formBuilder.group({
  gateway: new FormControl({ value: "", disabled: false }, [
    Validators.required,
    Validators.pattern(this.ipRegex)
  ])
});

See it in action: https://stackblitz.com/edit/angular-ivy-swbfa3?file=src/app/app.component.ts

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