I am trying to refactor my component where it takes the data from a remote server as you can see below the mock API response. how can I restructure my component to fully depend on the API response, and fill the component based on their attributes where _name is my heading, and "data"` is our body data to fill the rest table alike
import React, {useState,useEffect} from 'react';
import axios from 'axios';
export default function Demo () {
const [isModalOpen, setModalIsOpen] = useState(false);
const [users, setUsers] = useState([]);
const handleOnClick = async () => {
try {
const { data } = await axios.get('xxxxxxxxxxxxxxx');
setUsers(data);
// Now that the data has been fetched, open the modal
setModalIsOpen(true);
} catch (err) {
console.error("failed", err);
}
};
return (
<div className="container">
<>
{keys.map((key) => (
<div className="col" key={key}>
<div className="row">{key}</div>
{arr[0][key].map((item) => (
<div className="row" key={item._id} onClick={() => handleOnClick(item)}>{item._name}</div>
))}
</div>
))}
</>
{isModalOpen && <Modal onRequestClose={() => setModalIsOpen(false)} data={users}/>}
</div>
);
}
API Response
{
"count":39,
"next":null,
"previous":null,
"results":[
{
"_name":"Collection",
"data":[
{
"_id":"T1560",
"_name":"Archive Data",
"tags":[
"Collection"
],
"subtitle":[
{
"subtitle_id":"T1560.001",
"subtitle_name":"Archive Utility",
"queries":[
],
}
],
"queries":[
],
}
]
}
}
Related
NewsDetails
import React, { useState, useEffect } from 'react'
import { useParams } from 'react-router-dom'
const NewsDetail = ({ state }) => {
const { id } = useParams();
return (
<div>
{
state
.filter((a) => a.id === id)
.map((card, index) => (
<>
<div className="card" key={index}>
<h2>{card.title}</h2>
<h2>{card.content}</h2>
<img src={card.imageUrl} alt="" />
</div>
</>
))
}
</div>
)
}
export default NewsDetail
NewsItem
import React from 'react'
import clock from "../components/assets/img/Clock.svg"
import user from "../components/assets/img/User.svg"
import { Link } from 'react-router-dom'
const NewsItem = (props) => {
const { imageUrl, title, author, content, date, id } = props
return (
<Link className="col-lg-4 p-2" to={`/detail/${id}`}>
<div className="newsItem">
<img src={imageUrl} alt='newsPhoto' />
<h2>{id}</h2>
<div className="itemBody">
<p className='title'>{title}</p>
<div className="line"></div>
<p className='content'>{content}</p>
<div className="itemfooter">
<span><img src={clock} alt='clock' />{date}</span>
<span><img src={user} alt='user' />{author}</span>
</div>
</div>
</div>
</Link>
)
}
export default NewsItem
Home
import React, { useEffect, useState } from "react";
import NewsItem from "./NewsItem";
import SpinnerLoad from "./SpinnerLoad";
import { v4 as uuidv4 } from 'uuid';
const Home = (props) => {
const Category = [
"all",
"business",
"sports",
"world",
"technology",
"entertainment",
"science"
];
const { state, setState} = props;
const [loading, setLoading] = useState(false)
const fetchValue = (category) => {
fetch(`https://inshorts-api.herokuapp.com/news?category=${category}`)
.then(res => res.json())
.then(res => {
setState(res.data)
setLoading(true)
})
.catch((error) => console.log(error))
console.log(state);
setLoading(false);
};
// const fetchValue = async () => {
// try {
// const data = await axios
// .get(`https://inshorts-api.herokuapp.com/news?category=sports`)
// .then(res => {
// console.log(res);
// setState(res.data)
// })
// setLoading(true)
// console.log(loading);
// } catch (e) {
// console.log(e);
// }
// }
const CategoryButton = ({ category }) => (
<button onClick={() => fetchValue(category)} style={{ textTransform: 'capitalize' }}>{category}</button>
);
useEffect(() => {
fetchValue('all')
},[])
return (
<>
<div className="header-bg">
<h1 className="mb-3">News</h1>
<div className="btns ">
{Category.map((value, index) => {
return <CategoryButton category={value} key={index} />;
})}
</div>
</div>
<div className="news">
<div className="container">
<div className="row">
{
!loading
? <SpinnerLoad/>
:
state.map((data,index) => {
return (
<NewsItem
imageUrl={data.imageUrl}
author={data.author}
title={data.title}
content={data.content}
date={data.date}
id={uuidv4()}
key={index}
/>
);
})
}
</div>
</div>
</div>
</>
);
};
export default Home;
I have created a project with api. With categories it is possible to change the incoming data, but there is one thing where I want to get more detailed information when I click on the newsItem card. That api doesn't have id value, so I used uuid. Information corresponding to the id value should come with useParams. But it doesn't work. How can I fix this problem?
The first issue is that you are generating a GUID when rendering the state array which won't necessarily correlate to any data you are trying to match/filter by in the NewsDetail component.
state.map((data,index) => (
<NewsItem
imageUrl={data.imageUrl}
author={data.author}
title={data.title}
content={data.content}
date={data.date}
id={uuidv4()} // <-- new id each render cycle
key={index}
/>
))
You want to inject the id property when the data is fetch so that it's a stable reference that lives as long as the data does. In other words, it should be an intrinsic property of the data.
Example:
const fetchValue = async (category) => {
setLoading(true);
try {
const res = await fetch(`https://inshorts-api.herokuapp.com/news?category=${category}`);
const { data } = await res.json();
setState(data.map(el => ({
...el,
id: uuidv4(), // <-- map and inject id here
})));
} catch(error) {
console.log(error);
} finally {
setLoading(false);
}
};
...
state.map((data) => (
<NewsItem
key={data.id} // <-- use as React key
data={data} // <-- pass entire data object as prop
/>
))
NewsItem
const NewsItem = ({ data }) => {
const { imageUrl, title, author, content, date, id } = data;
return (
...
);
};
NewsDetail
const NewsDetail = ({ state }) => {
const { id } = useParams();
return (
<div>
{state
.filter((card) => card.id === id)
.map((card) => (
<div className="card" key={card.id}>
<h2>{card.title}</h2>
<h2>{card.content}</h2>
<img src={card.imageUrl} alt="" />
</div>
))
}
</div>
);
};
I am trying to display a photo from an object I received from an API. I was able to get down to the data information, but the image is not displaying in the displayPhoto function. I was wondering what was wrong with this?
import React, { useState, useEffect } from "react";
import axios from "axios";
// fetch api
// display data
// display more data
export default function App() {
const [data, setData] = useState([]);
const fetchAPI = () => {
axios.get('https://randomuser.me/api')
.then(res => {
// handle success
console.log(res["data"]["results"]);
const indData = (res["data"]["results"]);
const updatedData = [
...data,
...indData
]
setData(updatedData);
// console.log(data)
})
.catch(error => {
// handle error
console.log(error);
})
}
const mapData = (info) => {
const first = (info["name"]["first"])
const last = (info["name"]["last"])
return `${first} ${last}`;
}
const displayPhoto = (info) => {
const picture = (info["picture"]["large"]);
return <img src={picture} />;
}
return (
<>
<div className="App">
<h1>Hello CodeSandbox</h1>
<h2>Start editing to see some magic happen!</h2>
<button onClick={fetchAPI} >Fetch API </button>
{data.map((e, idx) => (
<p>{mapData(e, idx)}</p>
{displayPhoto(e)}
))}
</div>
</>
);
}
It looks like you put the wrong src to img tag in displayPhoto function. You should check the path and then render img component with it.
{data.map((e, idx) => (
<div>
<p>{mapData(data, idx)}</p>
<img src={data.rightSrcl} />
</div>
))}
I am making a get request to an api and then trying to map over the request. My issue is that the response is changing from data in this usual [{...},{...}] to '[[Object Object][Object Object]]' so that when I try to map over the array, it is throwing an error. I have tried using JSON.stringify() but it does not work. Here is my code:
---- Home.js
import React, { useState, useEffect } from "react";
const Home = () => {
const [tableData, setTableData] = useState([]);
useEffect(() => {
const url =
"https://api.football-data.org/v2/competitions/2021/standings?standingType=HOME";
const fetchItems = async () => {
const apiResult = await fetch(url, {
headers: {
"X-Auth-Token": process.env.REACT_APP_API_KEY,
},
})
.then((res) => res.json())
.catch((err) => console.error(err));
setTableData(apiResult.standings[0].table);
};
fetchItems();
}, []);
return (
<div className="home-container">
<Hero />
<Table data={tableData} />
<Predictions />
<Footer />
</div>
);
};
------ Table.js
import TableList from "./TableList";
const Table = ({ data }) => {
return (
<section className="table" id="table">
<h1 className="table-header">Table</h1>
<div className="table-container">
<TableList data={data} />
</div>
</section>
);
};
--------- TableList.js
import TableCard from "./TableCard";
const TableList = ({ data }) => {
return (
<div className="table-list">
{data.map((index, teamData) => {
return <TableCard key={index} data={teamData} />;
})}
</div>
);
};
If I console log the mapped data, I get '0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20',
instead of the data that I initially receive in the fetch request that is [{position:1, team: {...}, gamesPlayed:9}, {...}].
I have never had this issue before when using a GET request to an API so any and all help is appreciated. Sorry in advance for the poor formatting.
After submitting with UpdateParams, the new url is called and a JSON object with the new queried data is returned as expected.
The form updates the two state vars.
However, the products in the all-products view are not updated to reflect the form input.
What do I need to do to to refresh the render to reflect the new data in product?
//all-products.js
import Link from 'next/link'
import React from 'react';
import { useState } from 'react';
//gets data from local api
async function getData(rank, keyword){
const res = await fetch(`http://localhost:4000/api?top=${rank}&keyword=${keyword}`);
return res;
}
export async function getStaticProps() {
const rank = 5;
const keyword = "shorts";
const response = await getData(rank, keyword);
const products = await response.json();
console.log(products);
if (!products) {
return {
notFound: true,
}
}
return {
props: {
products,
},
}
}
export default function AllProducts(stuff) {
let {products} = stuff;
const [rank, setRank] = useState("3");
const [keyword, setKeyword] = useState("shoes");
//from form
const updateParams = async (e) => {
e.preventDefault();
const response= await getData(rank, keyword);
products = await response.json();
}
return (
<div>
<input
type='text'
placeholder='topRank'
value={rank}
onChange={e => setRank(e.target.value)}
/>
<input
type="text"
placeholder='searchTerm'
value={keyword}
onChange={e => setKeyword(e.target.value)}
/>
<button
type='submit'
onClick={updateParams}>
Update Params</button>
<ul>
{products.Products.map((product) => {
return (
<div key={product.Id}>
<li>{product.Name}</li>
<li><img width={300} src={ product.imgUrl } alt="product image" /></li>
</div>
) }
)}
</ul>
</div>
)
}
getStaticProps is run at build-time so it'll provide the data that's available at that time. To update the UI after the user interacts with the form you should put products into state and update it once new params are submitted and you retrieve the new products.
// all-products.js - removed irrelevant code for simplicity
export default function AllProducts(stuff) {
const [products, setProducts] = useState(stuff.products);
//...
const updateParams = async (e) => {
e.preventDefault();
const response = await getData(rank, keyword);
const newProducts = await response.json();
setProducts(newProducts);
}
return (
//...
<ul>
{products.Products.map((product) => {
return (
<div key={product.Id}>
<li>{product.Name}</li>
<li><img width={300} src={product.imgUrl} alt="product image" /></li>
</div>
)
})}
</ul>
//...
)
}
I've created my backend and it works. I tested different Axios requests in order to create a form.
In my React front project, I created a POST axios request, I console.log(response.data) and I got an object with the id, the title and questions.
I am stuck because I don't know how I could display the data of the object in my front.
Here is my front React code:
import React, { useState, useEffect } from "react";
import { Link } from "react-router-dom";
import axios from "axios";
const NewForm = () => {
const [data, setData] = useState([]);
useEffect(() => {
const fetchData = async () => {
if (data.length === 0) {
const response = await axios.post(
"https://back-formnest-lereacteur.herokuapp.com/form/create",
{
title: "Your event",
}
);
console.log(response.data);
setData(response.data);
}
};
fetchData();
}, [data]);
return (
I am completely stuck here to display the data of my backend in my front
This is my backend code:
const express = require("express");
const router = express.Router();
const Form = require("../models/Form");
router.post("/form/create", async (req, res) => {
try {
if (req.fields.title) {
const newForm = new Form({
title: req.fields.title,
});
await newForm.save();
return res.json(newForm);
} else {
return res.status(400).json({ error: "Missing parameters" });
}
} catch (e) {
return res.status(400).json({ error: e.message });
}
});
This is my console.log(response.data) I want to display in my front React page:
I edited my code and I got an error:
import React, { useState, useEffect } from "react";
/* import { Link } from "react-router-dom"; */
import axios from "axios";
const NewForm = () => {
const [data, setData] = useState([]);
useEffect(() => {
const fetchData = async () => {
if (data.length === 0) {
const response = await axios.post(
"https://back.herokuapp.com/form/create",
{
title: "Nouveau formulaire",
}
);
console.log(response.data);
setData(response.data);
}
};
fetchData();
}, [data]);
return (
<>
<div>My forms</div>
<div>
{data && (
<>
<p>{data.title}</p>
{data.questions.map((question, index) => (
<div> {question} </div>
))}
</>
)}
</div>
</>
);
};
export default NewForm;
Hi Guys,
I updated my code but I have still an error code (TypeError: Cannot read property 'length' of undefined)
<>
<div>My forms</div>
<div>
{data && (
<>
<p>{data.title}</p>
{data.questions.length &
data.questions.map((question, index) => {
return <p key={index}>{question}</p>;
})}
</>
)}
</div>
</>
I updated again my code, I succeeded only to display the title of my form but I did not succeed to display the data included in my question array. I have a "0" which appears instead of my data. Please help
return (
<>
<div>My forms </div>
<div>
{data && data.questions && (
<>
<div>{data.title} </div>
{data.questions.length &
data.questions.map((question, index) => {
return <p key={index}>{question}</p>;
})}
</>
)}
</div>
</>
I updated again, same error appears:
return (
<>
<div>My forms </div>
<div>
{data &&
data.questions &&
data.questions.length(
<>
<div>{data.title} </div>
{data.questions.map((question, index) => {
return <p key={index}>{question}</p>;
})}
</>
)}
</div>
you've done the hard part!
now just .map over the question array if you want to display them out?
<div>
{data.questions.map((question => (
<div> {question.title} </div>
))}
</div>
I've only done a simple example but of course you can display as much or as little as you want
of course anything in state you can render. so if you want to display title do:
{data.title} wherever pleases you
It looks like your backend responds with an object, so here is how you could go about it.
1) Change your initinal state to undefined like this.
const [data, setData] = useState([]);
to
const [data, setData] = useState(undefined);
Then you can use it in the display like this
return (
<div>
{data && (
<>
<p>{data._id}</p>
<p>{data.title}</p>
{data.question.length && data.question.map((question,idx) => {
// this is assuming that each question is just a string and not an object
return (<p key={idx}>{question}</p>)
})}
</>
)}
</div>
)