Laravel Form Validations

In this article, we will discuss how Laravel Form Validations work. As we know, Laravel provides lots of features to reduce the repetitive task. Laravel provides an easy way to apply server side validations.
Prerequisite, we need a working Laravel basic application where we test our new code. If...

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Basic Use of Model Factories in Laravel

In this article, we will discuss the basic use of Model Factories in Laravel. Laravel comes with the feature called model factories that are offered to made fake models quickly. It’s used in the database testing and database seeding. Let’s start the discussion on this feature by... Read out the full post at here

How to Manage Elastic IP in AWS?

In this article, we will discuss "How to Manage Elastic IP in AWS?" . Here, you will learn the use of Elastic IP addresses and how to assign it to your EC2 Instance. If you are new with EC2 Instance then check out my previous article, "How to setup an EC2 Instance on AWS" . EC2 (Amazon Elastic Compute Cloud) provide us an ability to create, start, stop and terminate the instance at any time. This will creates a challenge with IP addresses, because restarting an instance or replacing a terminated instance with newly created instance, will result in a new IP address. Now the question is "How to reference a machine when the IP is constantly change?" . We can handle this situation with the use of Elastic IP address. We can associate a single Elastic IP address to different Ec2 Instances. You can immediately associate a new Ec2 Instance with the Elastic IP address if the EC2 instance is stopped or terminated. After the back-end EC2 instance changes, our exist...

How to use trackBy in Angular with Example

In this article, we will discuss "How to use trackBy in Angular" . Basically, " trackBy " is used to improve the performance of an angular application. Today, I will try to explain the use of trackBy with an example. Why do we need trackBy in Angular? By default, no need to use trackBy in Angular. But with large collections of data, angular ngFor directive may perform poorly. For example, a small change of data such as adding a new record, editing, or deleting a record from the collection. The angular framework will remove all the DOM elements that are associated with the data and will create them again in the DOM tree even if the same data is coming. Here, a lot of DOM manipulation will happen in the background if a large amount of data comes from the API then the application performance will suffer. Angular trackBy example Angular provides us function trackBy which helps us to track the items which have been added or deleted. The trackBy function takes two argum...

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