I am fairly new to web development and currently have a rudimentary web server using Node.js, Express, and Pug which I am hoping to convert to Next.js. Is it possible to create re-usable templates (similar to Pug/Jade) in Next.js?
This is how I do mine. There are better ways, but it's how I like it. I came from express handlebars, and have used pug before, so this is how I did mine.
In pages/_app.js file:
import React from 'react'
import Head from 'next/head'
export default function MyApp({ Component, pageProps }) {
const Layout = Component.Layout || LayoutEmpty // if page has no layout, it uses blank layout
const PageTitle = Component.PageTitle // page title of the page
return (
<Layout>
{PageTitle? (<Head><title>{PageTitle}</title></Head>) : '' }
<Component {...pageProps} />
</Layout>
)
}
const LayoutEmpty = ({children}) => <>{children}</> // blank layout if doesnt detect any layout
In your component folder where ever you want to put your layout file: eg component/layout.js
import Link from 'next/link';
import {useRouter} from 'next/router'
export function LayoutOne({children}) {
try {
return (<>
<nav>
<ul>
<li><Link href="/"><a>Home</a></Link></li>
</ul>
</nav>
<div>{children}</div>
</>)
} catch(e) {console.log(e)}
}
Then in your pages: eg pages/about.js
import React, { useState, useEffect } from 'react';
import {LayoutOne} from '../component/layout' // location of your layout.js file
Aboutpage.PageTitle = 'About | Website Tag Line' // set title of your page
Aboutpage.Layout = LayoutOne // using LayoutOne. If you dont do this, its considered blank layout and you'll get no layout
export default function Aboutpage() {
try {
return (
<>
<div>
<h2>About</h2>
</div>
</>
);
} catch(e) {console.log(e)}
}
If you want more layout, in your layout.js file at the end, just change the name of the export function eg: LayoutTwo
export function LayoutTwo({children}) {
try {
return (<>
<nav>
<ul>
<li><Link href="/dashboard"><a>Dashboard</a></Link></li>
</ul>
</nav>
<div>{children}</div>
</>)
} catch(e) {console.log(e)}
}
And one the page, you change layout to two
import {LayoutTwo} from '../component/layout'
Aboutpage.Layout = LayoutTwo
Related
I am using express nodejs to create a fullstack app, this page has to show users and products but it is rendering a blank page. If I delete the {} of user, it renders the page but with no results.
import React, { useContext, useState } from 'react';
import CoffeeContext from '../contexts/CoffeeContext';
import { Link } from "react-router-dom";
import '../App.css'
import UserContext from '../contexts/UserContext';
function CoffeeList(props) {
let { deleteCoffee } = useContext(CoffeeContext);
let { user } = useContext(UserContext)
return (
<CoffeeContext.Consumer>
{
({ coffee }) => {
return <div>
<h1>Posts</h1>
<h4>Hello <span> {user.username}'Insert user's name here' Thanks for visiting our website!</span></h4>
<button>Add New Post</button>
<div>
{coffee.map((c) => {
console.log(coffee)
return (
<div key={c._id}>
<h2>{c.name}</h2>
<Link to={`/edit/${c._id}`}>
<button>Edit</button>
</Link>
<button onClick={() => { deleteCoffee(c._id)}}>Delete</button>
<h6>{user.username}</h6>
</div>
)
})}
</div>
</div>
}
}
</CoffeeContext.Consumer>
);
}
export default CoffeeList;
I have built my firs full stack app that uses a react front end to communicate with a graphql server and surface data up from a mongoDB. When I look at the app from front end it looks like I am making two calls and return two sets of data (actually the same set twice).
Here is what I see in the dev tools console...
It looks to me like the first two are calls out and the last two are the data returns. If you look on the right, those are all to do with line 17 of BookList.js which is this...
console.log(this.props);
and this is the full code of that file....
import React, { Component } from 'react';
import { gql } from 'apollo-boost';
import { graphql } from 'react-apollo';
const getBooksQuery = gql`
{
books {
name
id
}
}
`;
class BookList extends Component {
render(){
console.log(this.props);
return(
<div>
<ul id="book-list">
<li>Book name</li>
</ul>
</div>
);
}
}
export default graphql(getBooksQuery)(BookList);
I am calling that BookList component with this code...
// components
import BookList from './components/BookList';
// apollo client setup
const client = new ApolloClient({
uri: 'http://localhost:5000/graphql'
});
class App extends Component {
render() {
return (
<ApolloProvider client={client}>
<div id="main">
<h1>Ninja's Reading List</h1>
<BookList />
</div>
</ApolloProvider>
);
}
}
export default App;
I am unsure why I am getting dbl calls or if that is the expectation. Any guidance at all is appreciated.
I am trying to pass a Link it has a films id to another component named movie detail js.
the problem I am having is connecting Movies Container link to movie detail. Please help
MoviesContainer.js
<Link to={ `/movie/${films.id}${config.apiKey}` }>
<button className='successW' > GET INFO </button>
</Link>
MovieDetail.js
import React, { Component } from 'react';
import axios from 'axios';
import './MovieDetail.css';
import { props , match , params, } from 'react-router-dom';
//import config from '../../config.js';
import films from '../MoviesContainer/MoviesContainer.js';
import router from '../../router.js'
export default class MovieDetail extends Component{
constructor(props){
super(props);
this.state= {
movie:[]
}
}
componentWillMount(){
axios.get(`/movies/:id`).then(response=> {
console.log(response.data.results);
this.setState({ moviesList: response.data.movie });
});
}
render(){
console.log( this.setState.movie);
const imgURL= 'http://image.tmdb.org/t/p/original';
return(
<div className='moviecd'>
<img style={{ height: '85%', width: '100%' }} src={ imgURL + this.state.movie.poster_path } alt='movie poster'></img>
</div>
)
}
}
ı guess you are using React-Router. First of all, you can specify the path you will use in the Router system and which component should be installed if this path is used. For Example :
<Route exact path="/movies/:movieId" component={MovieDetails} />
This is the system you should use for your router.
and there is a button to go to the MovieDetails.js component.
you should wrap this button with a Link(React-Router). Like This:
<Link to = {{pathname: `${movieId}`}}> // The id of the movie you clicked
<button>Go Movie </button>
</Link>
Now, if you clicked on which movie you clicked on, the id of that movie will go to the MovieDetails.js component as a props.
If you browse the props coming to the MovieDetails component, you will find a props like params.match.movieId.
You can now use this id when making a request (Inside the MovieDetails component). Like This:
fetch(`https://api.themoviedb.org/3/movie/${this.props.match.params.movieId}?api_key=<yourapikey>`)
How you process it after you get the data is up to you!
I hope it was understandable. Good Luck !
I have some items in a mongodb collection, now i want to view them on a react app, i've that code, but it doesn't display nothing, but if i check value with a console.log() i get the content. How i can do?
import axios from "axios";
const viewMails = []
axios.get('http://localhost:5000/emails').then(res => {
let emailString = JSON.parse(res.request.response)
for (const [index, value] of Array(emailString).entries()) {
viewMails.push(
<div key={index}>
<h1>{value.name}</h1>
<h3>{value.email}</h3>
<p>{value.message}</p>
<p>{value.createdAt}</p>
</div>
);
}
});
export default class EmailsViewer extends Component {
render() {
return (
<div className="emails">
<h1>Sos</h1>
{viewMails}
</div>
);
}
}```
Since you are trying to do a simple component to show a list, if you're using one of the last version of React, consider using axios hook (check the package documentation to see how to add it to your project https://www.npmjs.com/package/axios-hook)
Here I show you an example of what you need to do: list demo
So I have a component(Posts) in which a loop through all the posts from the Database. In the component, I 'embedded' another component(PostItem) so I dont have to create a different component for viewing individual entries. Now inside the PostItem component I have another component with the name of 'PostGallery'.
This is the current code that I have in PostItem.js file:
import React from 'react';
import PropTypes from 'prop-types';
import { Link } from 'react-router-dom';
import { connect } from 'react-redux';
import PostGallery from '../posts/PostGallery';
const PostItem = ({
post: { _id, text, name, files, avatar, user, likes, comments, date },
}) => (
<article className={_id}>
<Link to={`/posts/${_id}`}>
<div id="carouselExampleIndicators" className="carousel slide" data-ride="carousel">
<div className="carousel-inner">
{files.slice(0, 5).map((file, index) => (
<PostGallery key={index} post={file} />
))}
</div>
</div>
</Link>
</article>
);
PostItem.propTypes = {
post: PropTypes.object.isRequired,
};
export default connect(
null, null
)(PostItem);
When posting an entry the user can post URL from images separated by comma which is working just fine. The problem comes when displaying it in the front-end.
This is what I have in my PostGallery component:
import React from 'react';
import PropTypes from 'prop-types';
const PostGallery = ({
post: { files }
}) => {
return (
<div className="">
{post.files.length > 0 ? (
post.files.map(file => (
<img key={file} src={file} alt="" />
))) : (
<p>No images found</p>
)
}
</div>
);
};
PostGallery.propTypes = {
post: PropTypes.object.isRequired,
};
export default PostGallery;
I believe this should be easy but somehow its just now working and the console it's not trowing me any errors related to it. So if you guys can help...
Thanks!