Angular 8, Angular, NgRx, Redux, State Management Library

How to Build an Angular Application using NgRx (Angular 8 + Redux)

Building an Angular application with NgRx (Angular 8 + Redux) can be a daunting task. But with some help and guidance, you can create an amazing Angular application with NgRx in no time!

What is NgRx?

NgRx (Angular 8 + Redux) is a state management library based on the principles of Redux. Redux is a popular state management pattern for JavaScript applications, and NgRx provides a way to use the same pattern in the world of Angular.

NgRx is built around a few key concepts: Actions, Reducers, Effects, State, and Selectors. We’ll go over each of these components to give you a better understanding of what NgRx does.

Actions:

Actions are payloads of information that send data from the application to the store. They are the only source of information for the store and can be triggered from anywhere in the application. Actions will have a type and data associated with them.

Reducers

Reducers are functions that take in the current state of the application, an action, and return a new state. The new state is based on the actions’ type and data. These reducers will update the state however we want when the action is dispatched.

Effects:

Effects are middleware that enable us to connect external sources such as APIs to our store. They listen for an action, execute some logic, and then dispatch a new action with the result of that logic. This allows us to handle asynchronous behavior and keep our state up to date.

State:

State is simply an object tree that holds the data of our application. It is immutable and can only be changed by dispatching actions. We usually initialize the state in the root reducer.

Selectors:

Selectors are functions that allow us to extract specific pieces of data from the state. They can be used to easily access the data we need without having to traverse the state tree manually. Selectors can also be used to create derived data, which means data that’s derived from existing state data.

Creating an Angular Application using NgRx

Now that we’ve gone over the concepts of NgRx, let’s look at how to actually use it to create an Angular application. First, install the ng-redux package from npm. Once you’ve installed the package, import NgRxModule in the root module of your application. Then create your actions, reducers, effects, selectors, and state objects. Finally, inject the Store into any components where you need access to the state.

With NgRx, creating an Angular application becomes a lot easier. You can easily manage the state of your application and keep everything in sync with just a few lines of code. So if you’re looking for a way to manage state in your Angular application, NgRx is a great option!