React로 간단한 Movie App 만들기 - 1

import { useEffect, useState } from "react";

function App() {
  const [loading, setLoading] = useState(true);
  const [movies, setMovies] = useState([]);
  const getMovies = async () => {
    const json = await (
      await fetch(
        `https://yts.mx/api/v2/list_movies.json?minimum_rating=8.8&sort_by=year`
      )
    ).json();
    setMovies(json.data.movies);
    setLoading(false);
  };
  useEffect(() => {}, []);
  return (
    <div>
      {loading ? (
        <h1>Loading...</h1>
      ) : (
        <div>
          {movies.map((movie) => (
            <div key={movie.id}>
              <img src={movie.medium_cover_image} />
              <h2>{movie.title}</h2>
              <p>{movie.summary}</p>
              <ul>
                {movie.genres.map((g) => (
                  <li key={g}>{g}</li>
                ))}
              </ul>
            </div>
          ))}
        </div>
      )}
    </div>
  );
}
export default App;

• loading useState 사용해서 loading이면 Loading... 띄우고 아니면 영화를 return하는 로직을 짬.
• json으로 8.8 이상의 영화만 보여주는 함수를 짜준다.
• map 함수 사용해서 필요한 정보만 가져옴.

다른 페이지로 이동하는 로직을 짜는 법

components/Movie.js

import PropTypes from "prop-types";

function Movie({ coverImg, title, summary, genres }) {
  return (
    <div>
      <img src={coverImg} alt={title} />
      <h2>{title}</h2>
      <p>{summary}</p>
      <ul>
        {genres.map((g) => (
          <li key={g}>{g}</li>
        ))}
      </ul>
    </div>
  );
}

Movie.propTypes = {
  coverImg: PropTypes.string.isRequired,
  title: PropTypes.string.isRequired,
  summary: PropTypes.string.isRequired,
  genres: PropTypes.arrayOf(PropTypes.string).isRequired,
};

export default Movie;

• Movie component는 속성(coverImg, title, summary, genres)을 모두 부모 component로부터 받아온다.
• npm i react-router-dom@5.3.0 을 다운받음.

routes/Home.js

import Moive from "../components/Movie";
import { useEffect, useState } from "react";

function Home() {
  const [loading, setLoading] = useState(true);
  const [movies, setMovies] = useState([]);
  const getMovies = async () => {
    const json = await (
      await fetch(
        `https://yts.mx/api/v2/list_movies.json?minimum_rating=8.8&sort_by=year`
      )
    ).json();
    setMovies(json.data.movies);
    setLoading(false);
  };
  useEffect(() => {}, []);
  return (
    <div>
      {loading ? (
        <h1>Loading...</h1>
      ) : (
        <div>
          {movies.map((movie) => (
            <div key={movie.id}>
              <img src={movie.medium_cover_image} />
              <h2>{movie.title}</h2>
              <p>{movie.summary}</p>
              <ul>
                {movie.genres.map((g) => (
                  <li key={g}>{g}</li>
                ))}
              </ul>
            </div>
          ))}
        </div>
      )}
    </div>
  );
}
export default Home;

• App.js에 있던것을 여기로 복사해서 가져옴

App.js

import { BrowserRouter as Router, Switch, Route } from "react-router-dom";
import Detail from "./routes/Detail";
import Home from "./routes/Home";
function App() {
  return (
    <Router>
      <Switch>
        <Route path="/hello">
          <h1>Hello</h1>
        </Route>
        <Route path="/movie">
          <Detail />
        </Route>
        <Route path="/">
          <Home />
        </Route>
      </Switch>
    </Router>
  );
}

export default App;

Movie.js

import PropTypes from "prop-types";
import { Link } from "react-router-dom";

function Movie({ coverImg, title, summary, genres }) {
  return (
    <div>
      <img src={coverImg} alt={title} />
      <h2>{title}</h2>
      <h2>
        <Link to="/movie">{title}</Link>
      </h2>
      <p>{summary}</p>
      <ul>
        {genres.map((g) => (
          <li key={g}>{g}</li>
        ))}
      </ul>
    </div>
  );
}

Movie.propTypes = {
  coverImg: PropTypes.string.isRequired,
  title: PropTypes.string.isRequired,
  summary: PropTypes.string.isRequired,
  genres: PropTypes.arrayOf(PropTypes.string).isRequired,
};

export default Movie;

• /movie를 url에다 치면 detail 페이지로 넘어간다.
• Link to 를 사용해서 클릭하면 넘어가게끔 설정