Gain insights into state management in Angular with NgRx. Learn to use store, actions, reducers, selectors, handle side effects, and write unit tests for scalable applications.

angular.tar.gz

CHROME_BIN

angular

angular-test-reducers

angular-test-copy

angular-test-selectors

angular-test-effects-success

angular-test-effects-error

This course is designed to teach you how to manage states in Angular using the powerful NgRx library.

You’ll learn the fundamentals of state management and how it can be implemented in an Angular application using NgRx. Next, you’ll learn how to use the NgRx store, actions, reducers, and selectors to manage the application states and handle complex data. You’ll also learn how to handle side effects and asynchronous operations in an Angular application.

Throughout the course, you’ll gain hands-on experience in implementing state management using interactive projects. You’ll learn best practices and design patterns for state management in Angular and how to structure the state of an application using NgRx. Additionally, you’ll learn how to write unit test cases for NgRx features.

By the end of the course, you’ll be able to implement and debug states in an Angular application. You’ll be able to create more scalable, maintainable, and testable Angular applications that can handle complex states and data.

Mastering State Management with Angular and NgRx

In this lesson, we'll define a reducer function for our application's actions step-by-step.

# Introduction to NgRx reducers


When we dispatch an action from our component, NgRx forwards it to the reducers. The reducers perform updating operations on the store according to the `type` property of the action object. Then the reducer returns the new state to the store.

NgRx provides us with the `createReducer()` function to create and maintain reducers efficiently. The `createReducer()` function takes the initial state of the feature as its first parameter. The `createReducer()` function's primary purpose is to monitor actions, and for each action, it updates the store with the new data in an immutable way. The reducer listens for those actions with the help of the `on()` functions.

The `on()` function takes an action created from the `createAction()` function as its first parameter. The `on()` function can take multiple actions for the same operation. It takes a handler function as its second parameter to process the action. The handler function takes in the current state of the slice from the store and processes it to return the new state. Finally, for the root module, we use the `StoreModule.forRoot()` function, and for the feature module, we use the `StoreModule.forFeature()` function to connect the reducers to the store.

Let's create a reducer in an Angular application.

Getting Started

Redux Fundamentals

NgRx Fundamentals

Implementing NgRx Fundamentals

Debugging NgRx

NgRx with TypeScript

NgRx: Advanced Concepts

NgRx Effects

Build a Trello Clone in Angular using NgRx

Unit Testing NgRx

Implementing Shopping Cart Functionality

Appendix

Conclusion

E-Commerce Store With Stripe API Integration

Setting Up the Reducers

Introduction to NgRx reducers