Resolve Form Validation Issues in Angular with Separate Submit Behavior

Описание: Learn how to handle multiple forms with individual validation in Angular, ensuring that each form's submit button triggers only its respective validation checks.
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This video is based on the question https://stackoverflow.com/q/69254845/ asked by the user 'Mercy' ( https://stackoverflow.com/u/16859289/ ) and on the answer https://stackoverflow.com/a/69267475/ provided by the user 'navnath' ( https://stackoverflow.com/u/6099811/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Troubleshooting Form Validation in Angular

When dealing with user inputs in Angular applications, it's common to encounter validation issues when multiple forms are present on a single page. A frequent scenario developers face is wanting two forms to have distinct submit behaviors, where the validation for one form should not interfere with the other. In this guide, we'll discuss how to ensure each form operates independently, allowing you to harness Angular's powerful form validation capabilities effectively.

The Issue: Combined Validation

In a typical case, a developer set up two forms but faced a frustrating issue: submitting either form triggered validation for both, regardless of which form was targeted. The objective was clear: when the submit button is pressed for the clusterForm, it should validate only that form, allowing for submission and API calls without depending on the productFG form.

Example Code Overview

Here's a snippet from the existing code causing the problem:

[[See Video to Reveal this Text or Code Snippet]]

Understanding the Existing Validation Logic

Validation Logic: The current logic checks both forms for validity at once, preventing the submission of either form if the other is invalid.

Challenge: This leads to user frustration as it requires filling out both forms, even when they may only wish to submit one.

The Solution: Independent Validation

To create a more user-friendly application, we need to revise the validation logic so that each form's validation works independently. Here's how to do this:

Revised Validation Code

This new validation approach changes how we check for form validity:

[[See Video to Reveal this Text or Code Snippet]]

Implementation Steps

Separate Condition Checks: By only combining conditions that are relevant, you allow users to submit the clusterForm independently without filling out productFG.

Error Handling: Notify users when validation fails, so they know what needs to be addressed.

Refactoring Submit Logic:

Check this.clusterForm validity first when submitting that form.

Use this.productFG checks when necessary.

Benefits of This Approach

User Experience Improvement: Users can submit one form at a time, which reduces frustration and maintains focus.

Simplified Logic: Clearer conditionals make your code easier to maintain and understand.

Conclusion

By restructuring your validation logic to allow each form to validate independently, you can significantly enhance user experience in your Angular application. No longer will users need to navigate the cumbersome process of completing both forms under a single submit action. Instead, they’ll enjoy a smoother and more direct interaction with the application.

Implement the changes discussed above, and take another step towards building a more robust Angular application that adheres to best practices for form handling and user interactions.