MERN Stack Retail Store POS Application

Set up a MERN stack retail store POS application with create-react-app, run the local server, and install react-router-dom, axios, redux, react-redux, and Ant Design components.

Structure folders for pages, components, resources, and redirects, and implement routing to render home and items pages using react router. Test locally on localhost:3000 and apply bootstrap for layout.

Build a reusable default layout for a MERN stack retail store POS app, with a sidebar, header, and content area, wired via props.children.

Apply styling for the R&D layout by adjusting padding, height, and border radius on the sidebar and header. Tune the toggle size and center alignment for a polished UI.

Set up and customize the sidebar with home, bills, items, customers, and logo; configure links from react-router-dom and an active highlight for navigation.

Install express and mongoose, initialize the root folder, and create a Node.js server in server.js to connect to MongoDB and run on port 5000.

Connect MongoDB with Node.js using MongoDB Atlas and Compass, create a database and items collection, obtain the connection URL, and establish a Mongoose connection with basic error handling.

Add static items data into the MongoDB items collection by importing the provided JSON, then expose a get all items api to feed the front end.

create a mongoose items model with name, price, category, and image, export it, and implement a get all items API in an express router under /api/items, then test on localhost:5000.

Fetches all items via API using Axios, and renders them on the home page in a responsive grid with an item component.

Style the item component on the home page by adding a dedicated stylesheet, applying item and price classes, and implementing a responsive add-to-cart button with flex layout and breakpoints.

Set up a redux cart system with a root reducer, store, and provider, manage cart items with reducers and local storage, and implement loading state for item operations.

Convert the default layout from a class to a functional component using useState and useSelector, and validate the redux setup for header and cart items.

Discover how to implement add to cart, dispatching an add to cart action with the item payload, updating cart items in state and syncing them to local storage.

Design the cart page to render cart items from state data aligned with local storage values, with image, name, price, quantity controls, and delete actions, using the navigate hook.

Implement the cart quantity feature by wiring the plus and minus icons to update the cart payload, with new items defaulting to quantity one.

Delete from cart explains removing items by dispatching a delete action and filtering the cart array by payload id, demonstrating the delete operation on oranges, grapes, and mangoes.

Implement a dynamic loading indicator by adding show loading and hide loading actions in the reducer. Dispatch loading around API calls to fetch eBay items and render a central spinner.

Build the items list page by wiring the get all items api call, define table columns for name, image, price, and category, and enable add, edit, and delete actions.

Build the item data module with an add new item modal featuring name, prize, you all, and category, plus a category dropdown; reuse it for edits.

Build an add item form in the MERN stack retail POS app, with name, price, image, and a category select (fruits, vegetables, meat) using vertical layout and axios submission.

Learn to implement the add item API in the MERN stack retail store POS app by posting a new item, parsing the request body, and handling success or error responses.

Demonstrates editing existing items by opening a modal form with pre-populated values, updating name, price, and category, and submitting via axios post to modify the item.

Learn backend item editing with find one and update, updating fields by item id from the request body and returning item updated successfully after changing price, name, and category.

Implement delete item functionality in the MERN stack retail store pos app by wiring the API call, sending the item id, and refreshing the item list after deletion.

Set up a homepage category section with fruits, vegetables, and meat that filters items by category. Build a categories array with name and image and display them as flex items.

Implement category filtering on the homepage by selecting a category to show only fruits, vegetables, or meat. Style the active category and adjust spacing for clean layout.