Table of contents
Discover how Redux manages various types of information such as user login, interface, getting data, forms, moving around, settings, and shopping carts.
let's delve into each topic in more detail:
User Authentication State:
Purpose: This state keeps track of the authentication status of the user. It's crucial for applications that require user accounts and authentication to access certain features or data.
Key Components:
isLoggedIn: A boolean value indicating whether the user is authenticated or not.user: An object containing user information such as username, email, and any other relevant data.
Usage: You'll use this state to conditionally render components or control access to protected routes based on the user's authentication status.
Example: When a user logs into a social media platform, the User Authentication State keeps track of whether they are authenticated (isLoggedIn: true) and stores their user information (user: {username: 'example', email: 'example@example.com'}).
UI State:
Purpose: UI state manages various aspects of your application's user interface, such as loading indicators, error messages, or modal/dialogue states.
Key Components:
isLoading: A boolean value indicating whether the application is currently fetching data or performing an operation.error: An object containing error information, such as error messages or status codes, to handle and display errors to the user.isModalOpen: A boolean value indicating whether a modal or dialogue is currently open.
Usage: You'll use the UI state to provide feedback to users during loading operations, display error messages when something goes wrong, and manage UI components like modals and dialogues.
Example: In a chat application, UI State manages the display of loading indicators during message retrieval (isLoading: true), shows error messages if a message fails to send (error: {message: 'Failed to send message'}), and controls the visibility of the chat settings modal (isModalOpen: false).
Data Fetching State:
Purpose: This state manages the process of fetching data from APIs or external sources, handling loading indicators, fetched data, and errors.
Key Components:
isFetching: A boolean value indicating whether data fetching is in progress.data: An object or array containing the fetched data.error: An object containing error information if the data fetching process encounters an error.
Usage: Data fetching state is essential for managing asynchronous operations, such as fetching data from APIs, and providing feedback to users during the process.
Example: In a weather app, Data Fetching State indicates if weather data is being fetched from an external API (isFetching: true), stores the retrieved weather information (data: {temperature: 25°C, condition: 'Sunny'}), and displays an error message if the API request fails (error: {message: 'Failed to fetch weather data'}).
Form State:
Purpose: Form state manages the state of form inputs, submission status, and validation errors in your application.
Key Components:
formData: An object containing form input values.isSubmitting: A boolean value indicating whether the form is currently being submitted.errors: An object containing validation errors for form inputs.
Usage: You'll use form state to capture user input, validate form data, provide feedback on validation errors, and control the submission process.
Example: In an online registration form, Form State tracks user input values (formData: {username: 'example', email: 'example@example.com'}), indicates if the form is currently being submitted (isSubmitting: false), and displays validation errors if the user enters an invalid email address (errors: {email: 'Invalid email address'}).
Navigation State:
Purpose: The navigation state manages the current route or location in your application and may also include information about the navigation history.
Key Components:
currentRoute: A string representing the current route or URL path in the application.currentLocation: An object containing additional information about the current navigation location, such as query parameters or route parameters.
Usage: The navigation state is essential for building single-page applications (SPAs) and controlling the flow of navigation within the application.
Example: In a travel booking website, Navigation State manages the current route or URL path (currentRoute: '/flights'), and stores additional information about the navigation location, such as query parameters for flight searches (currentLocation: {route: '/flights', queryParams: {origin: 'New York', destination: 'Los Angeles'}}).
Cart/Shopping State:
Purpose: This state manages the shopping cart functionality in e-commerce applications, including the list of items in the cart, total price, and checkout process.
Key Components:
cartItems: An array containing the items added to the shopping cart, each represented as an object with details like product ID, quantity, and price.totalPrice: A numeric value representing the total price of all items in the shopping cart.
Usage: The cart/shopping state is essential for providing users with the ability to add/remove items from their cart, view the current contents of the cart, and proceed to checkout.
Example: In an online shopping application, Cart/Shopping State stores the items added to the shopping cart (cartItems: [{id: 1, name: 'Product A', price: 20, quantity: 2}]), calculates the total price of all items (totalPrice: 40), and facilitates the checkout process.
Settings/Preferences State:
- Purpose: This state manages user settings and preferences, allowing users to customize their experience within the application.
Key Components:
settings: An object containing various application settings chosen by the user.preferences: An object containing user preferences, such as theme selection, language preference, or notification settings.
Usage: You'll use settings and preferences state to persist user-specific configurations and provide a personalized experience for each user.
Example: In a music streaming app, Settings/Preferences State stores user-selected settings like preferred language (settings: {language: 'English'}), and preferences such as favourite genres (preferences: {genres: ['Pop', 'Rock']}).