By Vishal Basumatary in javascript — Mar 24, 2023

Angular patchValue dynamically

If you are working with Angular, you might have come across the need to dynamically patch values to your form fields. This can be done using the patchValue method of the FormGroup or FormControl objects. Let's discuss how to do this.

Using FormGroup

If you have a form group, you can use the patchValue method to dynamically update the form fields. Here's an example:


// Assume you have a FormGroup object called myForm
myForm.patchValue({
  firstName: 'John',
  lastName: 'Doe'
});

In this example, the patchValue method is called on the myForm object, and it updates the firstName and lastName fields with the values provided.

Using FormControl

If you have a single form control, you can use the patchValue method on that control as well. Here's an example:


// Assume you have a FormControl object called firstNameControl
firstNameControl.patchValue('John');

In this example, the patchValue method is called on the firstNameControl object, and it updates the value of that field with the value provided.

Multiple Ways to Update Values

There are multiple ways to update values using patchValue in Angular. Here are a few:

Update values for all fields in the form group
Update values for specific fields in the form group
Update values for a single form control

It's important to choose the right method based on your use case.

Conclusion

Dynamically updating form fields using patchValue is a common task in Angular. Use the examples above to help you get started. Remember to choose the right method based on your use case.