i am building an ecommerce website and i'm trying to add category button on the home page so that when you click a specific category, only those items will show. I am using redux to bring all the items to the home screen.
const products = [
{
name: 'Airpods Wireless Bluetooth Headphones',
image: '/images/airpods.jpg',
description:
'Bluetooth technology lets you connect it with compatible devices wirelessly High-quality AAC audio offers immersive listening experience Built-in microphone allows you to take calls while working',
brand: 'Apple',
category: 'Headphones',
price: 89.99,
countInStock: 10,
rating: 4.5,
numReviews: 12,
},
The item structure looks like this.
This is the code I have on the HomeScreen component:
import React, { useEffect } from 'react';
import { useDispatch, useSelector } from 'react-redux';
import { Row, Col, Button, ButtonGroup } from 'react-bootstrap';
import Product from '../components/Product';
import Loader from '../components/Loader';
import Message from '../components/Message';
import { listProducts } from '../actions/productActions';
const HomeScreen = () => {
const dispatch = useDispatch();
const productList = useSelector(state => state.productList);
const { loading, error, products } = productList;
const allCategories = [
'All',
...new Set(products.map(product => product.category)),
];
console.log(allCategories);
useEffect(() => {
dispatch(listProducts());
}, [dispatch]);
return (
<>
<div className="text-center my-4">
<ButtonGroup>
<Button className="btn-color-primary" style={{ margin: '5px' }}>
All
</Button>
<Button className="btn-color-primary" style={{ margin: '5px' }}>
Phones
</Button>
<Button className="btn-color-primary" style={{ margin: '5px' }}>
Headphones
</Button>
<Button className="btn-color-primary" style={{ margin: '5px' }}>
Cameras
</Button>
<Button className="btn-color-primary" style={{ margin: '5px' }}>
Cameras
</Button>
<Button className="btn-color-primary" style={{ margin: '5px' }}>
PlayStation
</Button>
</ButtonGroup>
</div>
{loading ? (
<Loader />
) : error ? (
<Message variant="danger">{error}</Message>
) : (
<Row>
{products.map(product => (
<Col key={product._id} sm={12} md={6} lg={4} xl={3}>
<Product product={product} />
</Col>
))}
</Row>
)}
</>
);
};
export default HomeScreen;
I created a variable that has all the categories from the proeducts mapped plus the 'All' one.What should i add to the Buttons so that when i click on them it would work as wanted?
You can create a state variable that will have the selected category name. Before you render products filter the products which have the category as selected category.
const [selectedCategory, setSelectedCategory] = useState("All");
const handleClick = (category) => setSelectedCategory(category);
Now, for the buttons, you should add an onClick event listener which changes the selectedCategory when it is clicked. for eg
<ButtonGroup>
{
allCategories.map(category => (
<Button onClick={() => handleClick(category)} key={category} className="btn-color-primary" style={{ margin: '5px' }}>
{category}
</Button>)
}
</ButtonGroup>
Now, filter the products if selectedCategory is not "All"
products.filter(product => selectedCategory==="All" || product.category===selectedCategory)
.map(product => (
<Col key={product._id} sm={12} md={6} lg={4} xl={3}>
<Product product={product} />
</Col>))