Efficiently Handle Multiple Forms and Conditional Display in Angular with TypeScript

Learn how to manage multiple forms in Angular, including dynamic form display based on conditions using TypeScript. Efficient techniques for handling login, verification, and account setup forms in a single component.
---

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How to handle multiple forms and submit in angular typescript including showing and hiding of components?

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Efficiently Handle Multiple Forms and Conditional Display in Angular with TypeScript

Managing multiple forms within a single Angular component can initially seem daunting, especially when different scenarios require showing or hiding components based on user actions or responses. This guide walks you through handling multiple forms – including login, verify email, and set username/password – in one Angular component, while using TypeScript to control the logic behind when each form is displayed and submitted.

Understanding the Problem

Imagine you're working with a single component that handles multiple forms. You have:

A login form

A verify email form

A set username and password form

Your challenge is to conditionally show the appropriate form based on the result of a service call. For instance, if a verification code is returned, the application should display the verify email form, and hide the others. Conversely, if no code is present, the login form should be displayed exclusively.

If you're struggling with how to manage user interactions effectively and conditionally display the correct form, you're in the right place.

The Solution: Using an Enum Status

To efficiently manage the display of different forms based on logic, we will implement a status variable using an enum. This simplifies our code and keeps it organized and maintainable.

Step 1: Define Your Enum

First, we'll create an enum to represent the various form statuses.

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

Using this enum, we'll create a generalStatus variable that will track the current form to display.

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

Step 2: Update the HTML with *ngIf

Next, we'll use Angular's directive *ngIf in our HTML to control which form is displayed based on the generalStatus variable. Here’s how to implement the conditional rendering for each form.

For the login form:

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

For the verify email form:

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

For setting the username and password form:

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

Step 3: Change the Status Based on User Actions

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

Final Thoughts

By utilizing an enum for status management and Angular's *ngIf directive for conditional rendering, you can effectively manage multiple forms within a single component. This method not only keeps your code clean and organized but also enhances user experience by only showing relevant components based on the current status.

Implement this pattern in your Angular application to streamline your form management process and improve maintainability.