Introduction to Redux

Introduction to Redux

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1. Getting Started

In this section we will learn what Redux is, why it is useful, and most importantly when it is useful. We will also learn how to set up a basic react-redux application.

When to use Redux?

Setting up a React-Redux Application

2. Fundamental Concepts

In this section we will go through the fundamental concepts of Redux that are necessary to understand the workings of a Redux application. We will use code examples to understand the concepts and in the following section we will use them practically.

Store Dispatch Method

Redux Data Flow

3. Redux in Practice

In the previous section we looked at the basic concepts. In this section we use those basic concepts to understand some more complicated concepts and the structure of a Redux application. In the end we will also look at the Counter application to put together all the pieces of our knowledge together.

Redux Application Structure

Modifying the Template for Use

Creating the Redux Store

Creating a Slice

Understanding Slice

Using Selectors to access State

Modifying State by Dispatching Actions

Thunk Functions

Rules for Reducers

Understanding the Counter Application

4. Creating a React-Redux Application

This chapter is focused on practice hence we will utilize the knowledge we acquired in previous sections to create a practical application using Redux along with React.

The Application

Setting Up the Application

Creating the UI Skeleton

Creating the Profile Slice

Creating the Posts Slice

Completing the Posts feature

Displaying Number of Posts and Users

Adding CSS Styling

Creating the Posts Slice

Now we will create the posts slice to be able to create, store and display posts. Create a new file called postsSlice.js in the features folder. We will use the createSlice function to create the slice, as we did in the previous chapter.

The slice will have a posts array which will initially be empty, lastID state which will have a value of 0 initially, and a createPost action which will be used for appending posts (in the form of JS objects) to the array in the store.

We also need to export the action, a selector, and reducer.

Now that the export is done, we will import it in the store.js to create the slice. The store.js should look something like this:

In the next chapter, we will try to make the posting feature functional.

Everything was clear?

Section 4. Chapter 5

Course Content

Introduction to Redux

Creating the Posts Slice

Now we will create the posts slice to be able to create, store and display posts. Create a new file called postsSlice.js in the features folder. We will use the createSlice function to create the slice, as we did in the previous chapter.

The slice will have a posts array which will initially be empty, lastID state which will have a value of 0 initially, and a createPost action which will be used for appending posts (in the form of JS objects) to the array in the store.

We also need to export the action, a selector, and reducer.

Now that the export is done, we will import it in the store.js to create the slice. The store.js should look something like this:

In the next chapter, we will try to make the posting feature functional.

Everything was clear?

Section 4. Chapter 5

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