Description:
Angular Route Guards are a powerful feature that allow developers to control navigation and protect routes within Angular applications. Whether you're building a secure dashboard, role-based access system, or need to restrict certain routes to authenticated users only, route guards provide a clean and maintainable way to do it.
Route guards are services that implement specific interfaces provided by Angular, such as CanActivate, CanActivateChild, CanDeactivate, Resolve, and CanLoad. These interfaces hook into the Angular Router and determine whether navigation to or from a route should be allowed.
For example, the CanActivate guard checks whether a user can access a route. You can use it for authentication, authorization, or any other logic that must pass before the route becomes active. Guards return either true, false, or an Observable/Promise resolving to those values, which gives you flexibility to perform asynchronous checks like API calls.
This article covers how to set up different types of route guards, how to implement them in a real-world Angular app, and best practices for maintaining clean and secure navigation logic.
What Are Angular Route Guards and Why Use Them?
Understand the core purpose of route guards and how they help secure and control access to your application routes.
Types of Route Guards in Angular:
Explore all available guards:
- CanActivate
- CanActivateChild
- CanDeactivate
- Resolve
- CanLoad
Each serves a unique purpose for controlling routing behavior.
Creating a Guard:
CanActivate:
Purpose: Used to determine if a route can be accessed.
Use Case: Block unauthenticated users from accessing /dashboard.
Usage in Route:
CanActivateChild:
Purpose: Apply guard checks on child routes inside a parent route.
Use Case: Secure admin sub-routes under /admin.
Usage:
CanDeactivate:
Purpose: Prevents loading a module unless conditions are met.
Use Case: Block unauthorized users from loading admin module.
Route Setup:
CanLoad
Use Case: Block unauthorized users from loading admin module.
Resolve:
Purpose: Load necessary data before navigating to the component.
Use Case: Fetch user details before loading the profile page.
In Routes:
In Component:
Summary Table of Guards
| Guard Type | Purpose | Common Use Case |
|---|---|---|
CanActivate |
Prevent unauthorized route access | Auth check before dashboard access |
CanActivateChild |
Protect nested routes | Secure sub-sections under /admin |
CanDeactivate |
Prompt before navigating away | Unsaved form warning |
CanLoad |
Block lazy-loaded module access | Prevent unauthorized module loading |
Resolve |
Fetch data before route is loaded | Preload user details or API data |
"This Content Sponsored by Buymote Shopping app
BuyMote E-Shopping Application is One of the Online Shopping App
Now Available on Play Store & App Store (Buymote E-Shopping)
Click Below Link and Install Application: https://buymote.shop/links/0f5993744a9213079a6b53e8
Sponsor Content: #buymote #buymoteeshopping #buymoteonline #buymoteshopping #buymoteapplication"