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0001 - Angular Reactive Forms


Context and Problem Statement

Most of the forms in our Angular applications use the template driven forms. Lately we have been noticing issues scaling and maintaining these forms. And have begun mixing the use of template-driven with reactive forms.

Maintaining two ways of handling forms are complex and moving full into a single approach will ensure a more consistent experience for developers and users.

Considered Options

  • Reactive forms - Provide direct, explicit access to the underlying forms object model. Compared to template-driven forms, they are more robust: they're more scalable, reusable, and testable. If forms are a key part of your application, or you're already using reactive patterns for building your application, use reactive forms.
  • Template-driven forms - Rely on directives in the template to create and manipulate the underlying object model. They are useful for adding a simple form to an app, such as an email list signup form. They're straightforward to add to an app, but they don't scale as well as reactive forms. If you have very basic form requirements and logic that can be managed solely in the template, template-driven forms could be a good fit.


Decision Outcome

Chosen option: Reactive forms, because our needs exceed what template-driven forms are recommended for.

Positive Consequences

  • You never need to think which form method to use.

Negative Consequences

  • Using only reactive form means we might have some additional boilerplate.