Can you use setValidators() in Angular to validate two patterns simultaneously?

Question

Can you use setValidators() in Angular to validate two patterns simultaneously?

Is there a way to validate both IP address and IP address range in a single control using Angular? I have tried using the following code snippet:

controls["CapPoolVolExpolAldClientControl"].setValidators([Validators.required, Validators.pattern(/([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}$/),Validators.pattern(/([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\/[0-9]{1,2}$/)]).

I also attempted to use Validators.compose(), but it did not work. Is there another solution to achieve this?

angular typescript validation

Answer 1

Answer №1

I believe it's important to adjust the pattern like this:

                                                                      Here
                                                                     \/\/\/
Validators.pattern(/([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){2,3}$/)

This modification will ensure that the minimum value is 2 (as with your second pattern) and the maximum value is 3. Additionally, remember to call the updateValueAndValidity() method after making changes in the validation.

Check out the Stackblitz Demo for reference.

Answer 2

I believe it's important to adjust the pattern like this:

                                                                      Here
                                                                     \/\/\/
Validators.pattern(/([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){2,3}$/)

This modification will ensure that the minimum value is 2 (as with your second pattern) and the maximum value is 3. Additionally, remember to call the updateValueAndValidity() method after making changes in the validation.

Check out the Stackblitz Demo for reference.

Answer 3

Answer №2

To ensure smooth input functionality, it is essential for the data to meet all specified criteria set by the validators in place. Currently, there are two validators that are being applied:

/([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}$/
/([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\/[0-9]{1,2}$/

The first validator is entirely encompassed within the second validator's parameters. This indicates that you have the option to either eliminate the first validator altogether and solely utilize the second one, or remove the first validator and make the portion \/[0-9]{1,2} optional.

Answer 4

To ensure smooth input functionality, it is essential for the data to meet all specified criteria set by the validators in place. Currently, there are two validators that are being applied:

/([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}$/
/([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\/[0-9]{1,2}$/

The first validator is entirely encompassed within the second validator's parameters. This indicates that you have the option to either eliminate the first validator altogether and solely utilize the second one, or remove the first validator and make the portion \/[0-9]{1,2} optional.

Answer 5

Answer №3

Develop a custom Validator function that includes multiple checks within its logic, similar to the following:

Give this a try

function combinePattern(control: AbstractControl): ValidationErrors {
  if (control.value) {
    console.log(control.value);
    var value: string = control.value;
    const patter1 = /([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}$/;
    const pattern2 = /([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\/[0-9]{1,2}$/;
    if ( patter1.test(value) || pattern2.test(value)) {
      return { pattern: true };
    }
  }
  return null;
}

See an example here

Answer 6

Develop a custom Validator function that includes multiple checks within its logic, similar to the following:

Give this a try

function combinePattern(control: AbstractControl): ValidationErrors {
  if (control.value) {
    console.log(control.value);
    var value: string = control.value;
    const patter1 = /([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}$/;
    const pattern2 = /([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\.([0-9]){1,3}\/[0-9]{1,2}$/;
    if ( patter1.test(value) || pattern2.test(value)) {
      return { pattern: true };
    }
  }
  return null;
}

See an example here

Can you use setValidators() in Angular to validate two patterns simultaneously?

Answer №1

Answer №2

Answer №3

Similar questions

Error 404 when implementing routing in Angular 2 with Auth0

Issue with Angular DevExtreme error popup

Navigating the complexities of managing numerous checkboxes in React

Exploring the process of connecting to an additional database with Angular Fire

The error message "Property '...' is not found on the type 'ServerContextJSONValue'" pops up whenever I try to utilize the useContext() function

utilize the useRef hook to display the total number of characters within a text area

Angular 7: Implementing a Dynamic Search Filtering System

Is the 'Auto' option supported for the display property of Axes in Angular using Ng2-Charts?

Send the template to the enclosed grid column

Assigning an argument of type `any` to a parameter of type `Observable<IComboboxItem[]>` can be considered risky

Is it possible to programmatically create a button to toggle the expansion and collapse of the Column Grouping in AG-Grid?

Error: Angular encountered an issue while loading the resource. Preflight response was not successful

Getting into nested information in a JSON string using TypeScript

Angular NgFor directive for rendering data

Guide to Angular Interface Styling - Ambiguous Suggestions

Issue with handsontable numbro library occurs exclusively in the production build

Sending a message to an iframe from a different origin using JavaScript

Unable to alter the height of the element

send the checkbox control's model value back to the parent control in Vue3

Is it possible to transfer files using Angular 2?