It is my first time working with useContext hook and I was trying to consume values with useContext in Navbar.js
which I've provided in the parent component, but i'm receiving undefined
only. In the Navbar.js
when I console log user
it showsundefined
.
I tried to pass the data as props and it works fine. It only happens when I try with Context API. I think I messed up my context api implementation.
- Created a context at
AuthContext.js
import {createContext} from 'react'
export const AuthContext = createContext({})
- Set values in
App.js
and wrapped using Provider.
import Login from "./pages/Login";
import Register from "./pages/Register";
import Cart from "./components/Cart/Cart";
import Slider from "./components/Slider";
import Categories from "./components/Categories";
import PopularProducts from "./components/PopularProducts";
import Navbar from "./components/Navbar";
import Checkout from "./components/Cart/Checkout";
import Products from "./components/Products";
import Footer from "./components/Footer";
import {
signInWithEmailAndPassword,
signOut,
onAuthStateChanged,
createUserWithEmailAndPassword,
} from "firebase/auth";
import { auth } from "./lib/firebase-config";
import { BrowserRouter as Router, Route, Switch } from "react-router-dom";
import { useState, useEffect } from "react";
import { commerce } from "./lib/commerce";
import { AuthContext } from "./context/AuthContext";
const App = () => {
const [products, setProducts] = useState([]);
const [cart, setCart] = useState({});
const [order, setOrder] = useState({});
const [errorMessage, setErrorMessage] = useState("");
const [loginEmail, setLoginEmail] = useState("");
const [loginPassword, setLoginPassword] = useState("");
const [user, setUser] = useState({});
const [registerEmail, setRegisterEmail] = useState("");
const [registerPassword, setRegisterPassword] = useState("");
const [isLoggedIn, setIsLoggedIn] = useState(
localStorage.getItem("isLoggedIn")
);
onAuthStateChanged(auth, (currentUser) => {
setUser(currentUser);
});
const loginHandler = async (event) => {
event.preventDefault();
try {
const user = await signInWithEmailAndPassword(
auth,
loginEmail,
loginPassword
);
setIsLoggedIn(true);
localStorage.setItem("isLoggedIn", true);
console.log(auth.currentUser.email);
} catch (error) {
console.log(error.message);
}
};
const registerHandler = async () => {
try {
const user = await createUserWithEmailAndPassword(
auth,
registerEmail,
registerPassword
);
setIsLoggedIn(true);
localStorage.setItem("isLoggedIn", true);
console.log({ registerEmail });
console.log(user);
} catch (error) {
console.log(error.message);
}
};
const logoutHandler = async () => {
await signOut(auth);
setIsLoggedIn(false);
localStorage.clear();
};
const fetchProducts = async () => {
const { data } = await commerce.products.list();
setProducts(data);
};
const fetchCart = async () => {
setCart(await commerce.cart.retrieve());
};
const handleAddToCart = async (productId, quantity) => {
const item = await commerce.cart.add(productId, quantity);
setCart(item.cart);
};
const handleUpdateCartQty = async (lineItemId, quantity) => {
const response = await commerce.cart.update(lineItemId, { quantity });
setCart(response.cart);
};
const handleRemoveFromCart = async (lineItemId) => {
const response = await commerce.cart.remove(lineItemId);
setCart(response.cart);
};
const handleEmptyCart = async () => {
const response = await commerce.cart.empty();
setCart(response.cart);
};
const refreshCart = async () => {
const newCart = await commerce.cart.refresh();
setCart(newCart);
};
const handleCaptureCheckout = async (checkoutTokenId, newOrder) => {
try {
const incomingOrder = await commerce.checkout.capture(
checkoutTokenId,
newOrder
);
setOrder(incomingOrder);
refreshCart();
} catch (error) {
setErrorMessage(error.data.error.message);
console.log(error.data);
}
};
useEffect(() => {
fetchProducts();
fetchCart();
}, []);
return (
<>
<AuthContext.Provider
value={
(user,
logoutHandler,
isLoggedIn) }>
<Navbar/>
</AuthContext.Provider>
</>
);
};
export default App;
- Trying to consume data using useContext in
Navbar.js
import { Badge } from "@material-ui/core";
import {
Search,
ShoppingCartOutlined,
TranslateOutlined,
} from "@material-ui/icons";
import { useContext } from "react";
import styled from "styled-components";
import { mobile } from "../responsive";
import { Link } from "react-router-dom";
import { AuthContext } from "../context/AuthContext";
const Parent = styled.div``;
const Container = styled.div`
height: 70px;
background-color: #b6e7f0;
${mobile({ height: "70px" })}
width: 98.75vw;
position: fixed;
top: 0;
z-index: 4;
`;
const Logo = styled.h4`
font-size: 30px;
color: black;
margin-left: 20px;
${mobile({ fontSize: "30px" })}
`;
const Wrapper = styled.div`
padding: 10px 0px;
display: flex;
justify-content: space-between;
max-width: 98.75vw;
${mobile({ padding: "10px 0px" })}
`;
const Left = styled.div`
display: flex;
align-items: center;
text-decoration: none;
width: 20%;
`;
const Center = styled.div``;
const Right = styled.div`
display: flex;
align-items: center;
margin-right: 20px;
justify-content: flex-end;
text-decoration: none;
${mobile({ flex: 2, justifyContent: "flexEnd" })}
`;
const Language = styled.span`
font-size: 14px;
cursor: pointer;
${mobile({ display: "none" })}
`;
const SearchContainer = styled.div`
flex: 1;
display: flex;
align-items: center;
margin-left: 0px;
margin-top: 10px;
padding: 5 px;
border-radius: 5px;
cursor: pointer;
${mobile({ display: "none" })}
&:focus {
}
`;
const Input = styled.input`
border: none;
&:focus {
outline: none;
}
width: 90%;
height: 100%;
border-radius: 5px;
font-size: 15px;
padding: 5px;
margin-right: 20px;
${mobile({ height: "50%" })}
`;
const MenuItem = styled.div`
margin-left: 25px;
margin-top: 3px;
font-size: 18px;
font-weight: 600;
color: #0a6596e6;
cursor: pointer;
justify-content: space-between;
${mobile({ fontSize: "13px", marginLeft: "10px" })}
`;
const Navbar = () => {
const { user, logoutHandler, isLoggedIn } = useContext(AuthContext);
console.log(user)
return (
<Parent>
<Container>
<Wrapper>
<Left>
<Link to={"/"}>
<Logo>audiobae</Logo>
</Link>
</Left>
<SearchContainer style={{ color: "gray", fontSize: 14 }}>
<Input placeholder="Search for products, brands and more" />
<Search style={{ fontSize: "30px" }} />
</SearchContainer>
<Right>
<Language style={{ marginLeft: "5px", marginTop: "3px" }}>
<TranslateOutlined />
</Language>
{console.log(isLoggedIn)}
{isLoggedIn ? (
<>
<MenuItem>{user?.email}</MenuItem>
<MenuItem onClick={logoutHandler}>Logout</MenuItem>
</>
) : (
<>
<Link to={"/register"} style={{ textDecoration: "none" }}>
<MenuItem>Register </MenuItem>
</Link>
<Link to={"/login"} style={{ textDecoration: "none" }}>
<MenuItem>Login</MenuItem>
</Link>
</>
)}
<MenuItem>
<Link to={"/cart"}>
<Badge badgeContent={cart?.total_items} color="primary">
{console.log(cart)}
<MenuItem>
<ShoppingCartOutlined />
</MenuItem>
</Badge>
</Link>
</MenuItem>
</Right>
</Wrapper>
</Container>
</Parent>
);
};
export default Navbar;
CodePudding user response:
try it
<AuthContext.Provider value={{user,logoutHandler,isLoggedIn}}>
<Navbar/>
</AuthContext.Provider>