Skip to main content

What is CanActivate() Method in angular routes with details understanding and examples

Hello Guys,

In this blog we are going to learn about CanActivate method in angular.

Angular is a highly capable framework for the web which enables the development of web apps that are both interactive and dynamic. A fundamental component of Angular is its capability to regulate access to particular portions of an application in accordance with a user's permissions or roles. Powering this feature is the CanActivate method, which is a native type of protection in Angular and ensures that routes are safeguarded.

Angular's CanActivate method can play a vital role in secure application development. Let's explore it further in this blog.

CanActivate, what is it? Angular's CanActivate interface is a guard that's quite handy when it comes to securing routes. With this interface, you can control who's got access to a particular route by checking if the user meets certain conditions. For example, you could require that the user is authenticated or has the right privileges before granting access. This is a great way to avoid unauthorised access to vital parts of your app. Implemented with a canActivate() method is the CanActivate interface, found within a class. Upon invocation, this method will return a boolean value or an Observable<boolean> or Promise<boolean>. Should the boolean evaluate true, the user may proceed to access the desired route. If false is returned, the user is immediately rerouted to another destination, such as the login page.

How to use CanActivate?

To use CanActivate effectively, you should have a clear understanding of its functionalities. One way to achieve this is by creating an instance of CanActivate and implementing its canActivate method. From there, you can control access to certain routes and components by checking if the user is authorized to view them. It's also important to note that CanActivate can be used in conjunction with other guards, such as CanActivateChild and CanLoad, to provide even more specific access control. So don't be afraid to experiment with different combinations of guards to find the best fit for your specific needs. Running the following command using the Angular CLI will create a guard that implements the CanActivate interface for use with the CanActivate method in Angular.
ng generate guard guardName
The CanActivate interface can be utilized to create a unique guard. By defining the conditions necessary for the route to activate within the canActivate() method of the guard class, a new guard named guardName is produced. If we are looking to safeguard a path that demands authentication, we have the option of utilizing the canActivate() function in the following manner:



Using authService, the canActivate() function verifies the user's authentication in our hypothetical case. When a user is authenticated, the function approves the route by returning true. However, if the user has not been authenticated, the function blocks the route from activation by returning false while redirecting the user to the router.navigate() function that takes them to the login page.

We can then use the guardName guard to protect a route by adding it to the canActivate property in the route definition:



This will ensure that the guardName guard is applied to the protected route, and the canActivate() method is called to determine whether the route can be activated.


If you guys have any query then you can drop a mail to us on this mail id:

techoswag@gmail.com
Labels:

Comments

Post a Comment

Popular posts from this blog

Different between ``===`` and ``==`` operators in JavaScript

Hello Guys, In this blog we are going to learn about "===" and "==" different with details understanding and examples. JavaScript operators that you might have stumbled upon as a developer include "===", "==". JavaScript's "==" operator is commonly utilized for loose comparison purposes.  It functions by converting both of the values to a common type and then comparing them for equality.  Here's an example: The comparison operator "==" transforms the value of "17" from a string to a number before determining if the values match.  Consequently, if both versions of the data share the same properties and values, the comparison is marked as valid and returns true. The results of the "==" operator can occasionally be surprising, including: The comparison returns true when the "==" operator converts the empty string to the number 0 and compares it to the number 0.  This can result in bugs, so
Post a Comment
Read more

What is Pipes in Angular? Built in Pipes with examples and how we can create custom pipe using angular

Hello Guys, In this blog you're going to learn about Angular Pipes with in-built pipes and and customized pipes with details understanding. As an Angular developer, you often come across situations where you need to transform data before displaying it to the user. For instance, you might want to format a date, display a currency in a specific format, or filter a list of items based on some criteria. This is where Angular Pipes come into the picture. Angular Pipes are built-in features that allow you to transform data easily and efficiently. What are Angular Pipes? Angular Pipes are a built-in feature in Angular that allow you to transform data in the template. A pipe takes in a value or values and returns a transformed value. The transformed value is then displayed in the template. Angular Pipes are similar to filters in AngularJS. However, they are more powerful and flexible. Angular Pipes can transform data in a variety of ways, including formatting, filtering, sorting, and more.
Post a Comment
Read more

What is Map() Method? explain with with examples

Hi Guys, In this blog we are going to learn about map() method in JavaScript with detail understanding and examples. Map() :-  The map() method is one of the most critical tools in JavaScript programming. Its objective is to apply a function to every element present in an array, resulting in a new collection of effects. The method is highly valued by developers, and in this piece, we will investigate this method, delve into its mechanics, explore its syntax, and provide practical examples. The new array containing results is generated by calling the map() method on an array with a callback function applied to each element. The callback function can be passed as an argument and is executed during the process. For the map() method, the syntax is established as follows: When using the map() method, the the current element being processed, the array that the method was called on, and the index of the current element are passed as arguments to the callback function. It is also possible to u
Post a Comment
Read more