E-commerce Apparel Store feat. React & GraphQL

Author: Jarid [ [email protected] ]

A sample e-commerce store, 'Sick Fits', that allows users to sign-up, add/edit/remove items to the store, and even check-out items with a (test-mode) credit card purchase.

Motivation

Sickfits is an opportunity to learn more about React, GraphQL and a host of other modern technologies (listed below) to stay on the cutting edge of web development. In addition, I've wanted to build a fully-functioning E-commerce website with payment processing and an email server to improve my back-end skills.

Technology

      Front-end

                

• Next.js: Server-side rendering, application routing, and tooling (built on Webpack)
• React.js: Client-side front-end UI framework
• Apollo Client: GraphQL queries and mutations, cacheing, and managing application state

      Back-end

         

• GraphQL Yoga: Database layer used to resolve Queries and Mutations, credit card charges with Stripe, permissions/authentication
• Express/node.js: Server framework underneath Yoga (which includes an email server)
• Prisma: CRUD APIs that can integrate with many databases (including postreSQL, mongoDB or mySQL), as well as schema definition

      Testing

      

• Jest with Enzyme: React testing by utilizing Jest's engine to "shallow" render components, and constantly comparing to a snapshot to ensure rendering is consistent

Features

      Add Item to Store

      Edit Existing Items

      Credit Card Checkout

      Sitewide Search

      ...Password Reset, Permissions Panel, Order History, and more

Code Sample

The cart component in particular has to read and write to the database many times for its scope. As a result, with Apollo's render props that must have the component nested inside its React tags, the code can get quite messy. A handy npm package, [react-adopt] (https://github.com/pedronauck/react-adopt) can group these together with its adopt() method shown below. Hope this is useful to someone!

// ./frontend/components/Cart.js:28

const Composed = adopt({
  user: ({ render }) => <User>{render}</User>,
  toggleCart: ({ render }) => (
    <Mutation mutation={TOGGLE_CART_MUTATION}>{render}</Mutation>
  ),
  localState: ({ render }) => <Query query={LOCAL_STATE_QUERY}>{render}</Query>
});

const Cart = () => (
  <Composed>
    {({ user, toggleCart, localState }) => {
      const { me } = user.data;
      if (!me) return null;
      return (
        <CartStyles open={localState.data.cartOpen}>
          <header>
            <CloseButton title="close" onClick={toggleCart}>
              &times;
            </CloseButton>
            <Supreme>
              {me.name}
              's Cart
            </Supreme>
            <p>
              You Have {me.cart.length} Item
              {me.cart.length === 1 ? '' : 's'} in your cart.
            </p>
          </header>
          <ul>
            {me.cart.map(cartItem => (
              <CartItem key={cartItem.id} cartItem={cartItem} />
            ))}
          </ul>
          <footer>
            <p>{formatMoney(calcTotalPrice(me.cart))}</p>
            {!me.cart.length ? (
              ''
            ) : (
              <TakeMyMoney>
                <SickButton onClick={toggleCart}>Checkout</SickButton>
              </TakeMyMoney>
            )}
          </footer>
        </CartStyles>
      );
    }}
  </Composed>
);