Manually Set Value for FormBuilder Control

📝 Title: How to Manually Set a Value for a FormBuilder Control

👋 Hey there! Are you struggling to manually set a value for a control in a FormBuilder? Don't worry, I've got your back! In this blog post, I'll walk you through common issues and provide easy solutions so you can save time and frustration.

💭 Imagine this scenario: You're under pressure, racing against time, and you need to manually set the value for a control in a FormBuilder. But no matter what you try, the field remains blank, leaving you scratching your head. Let's dive in and find the perfect solution for you!

😲 The Problem: The code you shared gives us some insight into what might be causing the issue. Although you're setting the value correctly in the event handler, the form control doesn't seem to reflect the change when logged. This can be puzzling and frustrating, I understand! But fear not, we'll figure it out together.

🔎 The Solution: To manually set a value for a FormBuilder control, you should use the setValue() or patchValue() methods instead of directly modifying the control's value property. Let's update your code accordingly:

deptSelected(selected: { id: string; text: string }) {
  console.log(selected); // Shows proper selection!
  
  // This is how we update the value
  this.form.controls['dept'].setValue(selected.id); // or this.form.controls['dept'].patchValue(selected.id);
}

By using setValue() or patchValue(), you ensure that the control's value is correctly updated within the FormBuilder, allowing it to propagate throughout the form and reflect the change consistently.

🚀 Bonus Tip: If you're wondering when to use setValue() vs patchValue(), it's simple! When you want to set a single value for all controls within a FormGroup, use setValue(). On the other hand, if you only want to update specific controls without affecting the others, go for patchValue().

⚠️ Cautionary Note: Keep in mind that calling setValue() or patchValue() doesn't trigger validation automatically. If you need to revalidate the control after setting its value, you can call updateValueAndValidity():

deptSelected(selected: { id: string; text: string }) {
  console.log(selected);
  this.form.controls['dept'].setValue(selected.id);
  this.form.controls['dept'].updateValueAndValidity();
}

🎉 And voila! Your form control should now reflect the manually set value, bringing you one step closer to conquering your task and meeting your deadline. Way to go!

🤝 Call-to-Action: I hope this guide helped resolve your issue and shed some light on the magical world of manually setting values for FormBuilder controls. If you found this helpful, why not share it with your fellow developers who might be facing similar challenges?

🙌 Remember, sharing is caring! Let's help each other grow and make the coding world a better place. Feel free to leave any questions or insights in the comments section below. Happy coding! 😊✨