I have these two components: I fetch the data in the parent component and then pass it to the child component, which formats it into an object so that it can be used in the construction of a graph.
When the child component is mounted for the first time, the graph is not rendered.
If I try to change the child component code to update it (e.g. delete linkColor from ForceGraph2D’s props), the graph will be displayed correctly.
I want to find a way to see it right away, the first time the component is mounted.
Parent component:
import React, {Fragment, useEffect, useState} from "react";
import AddressList from "./AddressList";
import ClusterGraph from "./ClusterGraph";
import axios from "axios";
function ClusterPage(props) {
const [cluster, setCluster] = useState([]);
const [subCluster, setSubCluster] = useState([]);
useEffect(() => {
fetchData1();
fetchData2();
},[]);
const fetchData1 = async () => {
const address = props.match.params.addressHash;
const response = await axios.get('http://localhost:5000/', {
params: {address: address}
});
const data = await response.data;
setCluster(data);
}
const fetchData2 = async () => {
const address = props.match.params.addressHash;
const response = await axios.get('http://localhost:5000/sub/', {
params: {address: address}
});
const data = await response.data;
setSubCluster(data);
}
return (
<div key={props.match.params.id}>
<Fragment>
<AddressList data={cluster} />
<ClusterGraph data1={cluster} data2={subCluster} />
</Fragment>
</div>
);
}
export default ClusterPage;
Child component:
import '../styles/ClusterGraph.css';
import ForceGraph2D from 'react-force-graph-2d';
import React from "react";
class MyClusterGraph extends React.Component {
constructor(props) {
super(props);
this.state = {nodes:[],links:[]};
}
componentWillMount() {
this.loadData();
}
loadData = async () => {
let nodes = this.props.data1.map(row => {
let id = row.address_id;
let addressHash = row.address_hash;
let nodeColor;
if(row.miner_address)
nodeColor="blue";
else
nodeColor="purple";
return {id:id,addressHash:addressHash,nodeColor:nodeColor};
});
let links = this.props.data2.map(row => {
let source = row.address_id_1;
let target = row.address_id_2;
let linkColor;
switch (row.link_type) {
case 0:
linkColor="green";
break;
case 1:
linkColor="red";
break;
case 2:
linkColor="cyan";
break;
}
return {source:source,target:target,linkColor:linkColor};
});
this.setState({nodes:nodes,links:links});
}
render() {
return (
<div className="graph">
<ForceGraph2D
graphData={this.state}
backgroundColor="white"
height={400}
width={700}
nodeLabel="addressHash"
nodeColor="nodeColor"
linkColor="linkColor" />
</div>
);
}
}
function ClusterGraph({data1,data2}) {
return (
<div className="section2">
<MyClusterGraph data1={data1} data2={data2} />
</div>
);
}
export default ClusterGraph;
You could make sure you render your graphs after the data is fully fetched, and show a loader in the meantime, like so:
function ClusterPage(props) {
const [cluster, setCluster] = useState([]);
const [subCluster, setSubCluster] = useState([]);
useEffect(() => {
fetchData1();
fetchData2();
}, []);
const fetchData1 = async () => {
const address = props.match.params.addressHash;
const response = await axios.get("http://localhost:5000/", {
params: { address: address },
});
const data = await response.data;
setCluster(data);
};
const fetchData2 = async () => {
const address = props.match.params.addressHash;
const response = await axios.get("http://localhost:5000/sub/", {
params: { address: address },
});
const data = await response.data;
setSubCluster(data);
};
if (cluster.length <= 0 || subCluster.length <= 0) {
return <p>Loading...</p>;
}
return (
<div key={props.match.params.id}>
<Fragment>
<AddressList data={cluster} />
<ClusterGraph data1={cluster} data2={subCluster} />
</Fragment>
</div>
);
}
This way, you would use the constructor to format your data, as componentWillMount() is deprecated and considered unsafe:
class MyClusterGraph extends React.Component {
constructor(props) {
super(props);
this.state = {
nodes: this.props.data1.map((row) => {
let id = row.address_id;
let addressHash = row.address_hash;
let nodeColor;
if (row.miner_address) nodeColor = "blue";
else nodeColor = "purple";
return { id: id, addressHash: addressHash, nodeColor: nodeColor };
}),
links: this.props.data2.map((row) => {
let source = row.address_id_1;
let target = row.address_id_2;
let linkColor;
switch (row.link_type) {
case 0:
linkColor = "green";
break;
case 1:
linkColor = "red";
break;
case 2:
linkColor = "cyan";
break;
}
return { source: source, target: target, linkColor: linkColor };
}),
};
}
render() {
return (
<div className="graph">
<ForceGraph2D
graphData={this.state}
backgroundColor="white"
height={400}
width={700}
nodeLabel="addressHash"
nodeColor="nodeColor"
linkColor="linkColor"
/>
</div>
);
}
}
function ClusterGraph({ data1, data2 }) {
return (
<div className="section2">
<MyClusterGraph data1={data1} data2={data2} />
</div>
);
}
export default ClusterGraph;
Try making your parent component calls synchronous currently it is sync individually but it calls in async fashion change your code base accordingly
Related
I try to build sliders with different categories that each user has his point.
The informant comes from the json server
What I need I do not succeed in having the customer choose a user that is numbered and the dot will be colored in the slider How do I do that?
In addition he has the option to delete and return the point.
I was able to delete the points by deleting them in the object. But I could not return, is there a possibility to return?
Broker.jsx
import React, { useEffect, useState } from 'react';
import './style.css';
import Combo from '../components/Combo/Combo';
import Sliders from '../components/Sliders/Sliders';
const GetUsersDataFromManipulation = (users, field) => {
const state = users.reduce((store, user) => {
const userId = user.user
const currentManipulationUserData = user.profileManipulation[field]
if (currentManipulationUserData.length === 0) {
return store
}
store[userId] = currentManipulationUserData[0].bid
return store;
}, {})
return state;
};
function Broker({ manipulations }) {
const users = manipulations[2].users
const [hiddenUser, setHiddenUser] = useState(() => {
const visible = {};
for (let user of users) {
visible[user.user] = true;
}
return visible;
})
const GetUsersBid = (profileManipulation) => {
const data = GetUsersDataFromManipulation(users, `${profileManipulation}`); if (!Object.keys(data).length) {
return null
}
return data;
};
const gender = GetUsersBid('gender');
const age = GetUsersBid('age');
const marital = GetUsersBid('marital');
const children = GetUsersBid('children');
const education = GetUsersBid('education');
const interests = GetUsersBid('interests');
const dynamicInterests = GetUsersBid('dynamicInterests');
const showUser = (user_id) => {
const new_hidden = { ...hiddenUser }
new_hidden[user_id] = true;
setHiddenUser(new_hidden);
}
const hideUser = (user_id) => {
const new_hidden = { ...hiddenUser }
console.log(user_id)
new_hidden[user_id] = false;
setHiddenUser(new_hidden);
}
const [userInformation, setUserInformation] = useState([
{ name: 'gender', bids: gender },
{ name: 'age', bids: age },
{ name: 'marital', bids: marital },
{ name: 'children', bids: children },
{ name: 'education', bids: education },
{ name: 'interests', bids: interests },
{ name: 'dynamicInterests ', bids: dynamicInterests },
]);
useEffect(() => {
const curret_User_Info = [...userInformation]
for (let user of Object.keys(hiddenUser)) {
for (let i = 0; i < curret_User_Info.length; i++) {
if (curret_User_Info[i].bids !== null) {
if (hiddenUser[user] === false) {
delete curret_User_Info[i].bids[user]
}
else {
//What am I returning here? So that the bids will return?
}
}
}
}
setUserInformation(curret_User_Info)
}, [hiddenUser])
return (
<div>
<div className="button" >
{userInformation && <Combo users={users} showUser={showUser} hideUser={hideUser} userInformation={userInformation} />}
</div>
<div className='slid'>
{userInformation.map(sliderDetails => {
return (
<div className={sliderDetails.name} key={sliderDetails.name} >
{sliderDetails.bids && (<Sliders className="sliders" hiddenUserChange={hiddenUser} name={sliderDetails.name} userBids={sliderDetails.bids} setUserInformation={setUserInformation} userInformation={userInformation} />)}
</div>
)
})}
</div>
</div>
);
}
export default Broker;
ComboBox.jsx
import React, { useEffect, useRef, useState } from 'react';
import ComboBox from 'react-responsive-combo-box';
import { Button } from '#mui/material';
import 'react-responsive-combo-box/dist/index.css';
import "./style.css"
function Combo({ users, showUser, hideUser, userInformation }) {
const [selectedOption, setSelectedOption] = useState();
const [choosing, setChoosing] = useState();
useEffect(() => {
}, [users])
const onShow = () => {
showUser(users[selectedOption - 1].user)
}
const onHide = () => {
hideUser(users[selectedOption - 1].user)
}
const colorChange = (numOption) => {
const id = users[numOption - 1].user
}
return (
<div className="combo_box">
<ComboBox
onSelect={(option) => { setSelectedOption(option); colorChange(option) }}
options={[...Array.from({ length: users.length }, (_, i) => i + 1)]}
/>
<div className='button' >
<Button style={{ "marginRight": 20 }} variant="contained" onClick={onShow}>Show</Button>
<Button variant="contained" onClick={onHide}>Hide</Button>
</div>
</div>
);
}
export default Combo;
Sliders.jsx
import React, { useEffect, useState } from 'react'
import "./style.css"
import 'rc-slider/assets/index.css';
import Slider from 'rc-slider';
const Sliders = ({ hiddenUserChange, name, userBids, setUserInformation, userInformation }) => {
const [bids, setBids] = useState()
useEffect(() => {
setBids(Object.values(userBids))
}, [hiddenUserChange, userBids])
const updateFieldChanged = (newValue, e) => {//OnChanged Slider
setUserInformation(state => {
return state.map(manipulation => {
if (manipulation.name === name) {
Object.entries(manipulation.bids).forEach(([userId, bidValue], index) => {
manipulation.bids[userId] = newValue[index]
console.log(manipulation.bids[userId])
})
}
return manipulation
})
});
}
const handleChange = (event, newValue) => {
setBids(event)
};
return (
<>
<h1 className='headers'>{name}</h1>
{
<Slider
style={{ "marginRight": "20rem", "width": "30rem", "left": "20%" }}
range={true}
trackStyle={[{ backgroundColor: '#3f51b5' }]}
max={100}
RcSlider={true}
railStyle={{ backgroundColor: '#3f51b5' }}
activeDotStyle={{ left: 'unset' }}
ariaLabelForHandle={Object.keys(hiddenUserChange)}
tabIndex={(Object.keys(userBids))}
ariaLabelledByForHandle={bids}
value={(bids)}
onChange={handleChange}
onAfterChange={updateFieldChanged}
tipProps
tipFormatter
/>
}
</>
)
}
export default Sliders
enter image description here
Thank you all!
I have no idea How to store the react js state into localstorage.
import React, { Component } from 'react'
import './App.css';
import { auth,createUserProfileDocument } from './firebase/firebase.utils'
import { TodoForm } from './components/TodoForm/TodoForm.component'
import {TodoList} from './components/TodoList/TodoList.component'
import {Footer} from './components/footer/footer.component'
import Header from '../src/components/header/header.component'
import {Redirect} from 'react-router-dom'
import {connect} from 'react-redux'
import {setCurrentUser} from './redux/user/user.actions'
export class App extends Component {
constructor(props) {
super(props)
this.input=React.createRef()
this.state = {
todos:[
{id:0, content:'Welcome Sir!',isCompleted:null},
]
}
}
todoDelete = (id) =>{
const todos = this.state.todos.filter(todo => {
return todo.id !== id
})
this.setState({
todos
})
}
toDoComplete = (id,isCompleted) =>{
console.log(isCompleted)
var todos = [...this.state.todos];
var index = todos.findIndex(obj => obj.id === id);
todos[index].isCompleted = !isCompleted;
this.setState({todos});
console.log(isCompleted)
}
addTODO = (todo) =>{
todo.id = Math.random()
todo.isCompleted = true
let todos = [...this.state.todos, todo]
this.setState({
todos
})
}
unsubscribeFromAuth = null;
componentDidMount() {
const { setCurrentUser } = this.props;
this.unsubscribeFromAuth = auth.onAuthStateChanged(async userAuth => {
if (userAuth) {
const userRef = await createUserProfileDocument(userAuth);
userRef.onSnapshot(snapShot => {
setCurrentUser({
id: snapShot.id,
...snapShot.data()
});
});
}
setCurrentUser(userAuth);
});
}
componentWillUnmount() {
this.unsubscribeFromAuth();
}
render() {
return (
<div className='App'>
<Header />
<TodoForm addTODO={this.addTODO} />
<TodoList
todos={this.state.todos}
todoDelete={ this.todoDelete}
toDoComplete={ this.toDoComplete}
/>
<Footer/>
</div>
)
}
}
const mapStateToProps = ({ user }) => ({
currentUser: user.currentUser
});
const mapDispatchToProps = dispatch => ({
setCurrentUser: user => dispatch(setCurrentUser(user))
});
export default connect(
mapStateToProps,
mapDispatchToProps
)(App);
in my input Form
import './TodoForm.style.css'
export class TodoForm extends Component {
constructor(props) {
super(props)
this.state = {
content : ''
}
}
handleChange = (e) =>{
this.setState({
content: e.target.value
})
}
handleSubmit =(e) =>{
e.preventDefault();
this.props.addTODO(this.state);
this.setState({
content: ''
})
}
render() {
return (
<div className='inputTask'>
<form onSubmit={ this.handleSubmit}>
<input
className="textBox"
type='text'
onChange={ this.handleChange}
value={this.state.content}
placeholder='what you want to do ...'
/>
</form>
</div>
)
}
}
export default TodoForm
I have no idea How to store the react js state into localstorage.
i searched on internet but unable to find the exact solution all the codes that i think is necessary post.
You can use reactLocalStorage to save any data in local storage
import {reactLocalStorage} from 'reactjs-localstorage';
reactLocalStorage.set('var', true);
reactLocalStorage.get('var', true);
reactLocalStorage.setObject('var', {'test': 'test'});
reactLocalStorage.getObject('var');
reactLocalStorage.remove('var');
reactLocalStorage.clear();
Read out the localStorage item in the componentDidMount callback. Simply read the item you want to get, check if it exists and parse it to a usable object, array or datatype that need. Then set the state with the results gotten from the storage.
And to store it, simply handle it in an event handler or helper method to update both the state and the localStorage item.
class ExampleComponent extends Component {
constructor() {
super();
this.state = {
something: {
foo: 'bar'
}
}
}
componentDidMount() {
const storedState = localStorage.getItem('state');
if (storedState !== null) {
const parsedState = JSON.parse(storedState);
this.setState({ something: parsedState });
}
}
clickHandler = (event) => {
const value = event.target.value;
const stringifiedValue = JSON.stringify(value);
localStorage.setItem('state', stringifiedValue);
this.setState({ something: value });
}
render() {
return (
<button onClick={clickHandler} value={this.state.something}>Click me</button>
);
}
}
Set data in localStorage
key-value pair :
localStorage.setItem('key_name',"value");
object
localStorage.setItem('key_name', JSON.stringify(object));
Remove data from localStorage
localStorage.removeItem('key_name');
Get data from localStorage
let data = localStorage.getItem('key_name');
object :
let data = JSON.parse(localStorage.getItem('key_name'));
clear localStorage (delete all data)
localStorage.clear();
I am trying to use React Scheduler with my shifts database. The current state after trying to use hooks instead of class is that I cannot edit any field in the form. I have deleted some of the code to make it cleaner, for now I am trying only to add a shift.
React Scheduler original code:
import * as React from 'react';
import Paper from '#material-ui/core/Paper';
import { ViewState, EditingState } from '#devexpress/dx-react-scheduler';
import {
Scheduler,
Appointments,
AppointmentForm,
AppointmentTooltip,
WeekView,
} from '#devexpress/dx-react-scheduler-material-ui';
import { appointments } from '../../../demo-data/appointments';
export default class Demo extends React.PureComponent {
constructor(props) {
super(props);
this.state = {
data: appointments,
currentDate: '2018-06-27',
addedAppointment: {},
appointmentChanges: {},
editingAppointment: undefined,
};
this.commitChanges = this.commitChanges.bind(this);
this.changeAddedAppointment = this.changeAddedAppointment.bind(this);
this.changeAppointmentChanges = this.changeAppointmentChanges.bind(this);
this.changeEditingAppointment = this.changeEditingAppointment.bind(this);
}
changeAddedAppointment(addedAppointment) {
this.setState({ addedAppointment });
}
changeAppointmentChanges(appointmentChanges) {
this.setState({ appointmentChanges });
}
changeEditingAppointment(editingAppointment) {
this.setState({ editingAppointment });
}
commitChanges({ added, changed, deleted }) {
this.setState((state) => {
let { data } = state;
if (added) {
const startingAddedId = data.length > 0 ? data[data.length - 1].id + 1 : 0;
data = [...data, { id: startingAddedId, ...added }];
}
return { data };
});
}
render() {
const {
currentDate, data, addedAppointment, appointmentChanges, editingAppointment,
} = this.state;
return (
<Paper>
<Scheduler
data={data}
height={660}
>
<ViewState
currentDate={currentDate}
/>
<EditingState
onCommitChanges={this.commitChanges}
addedAppointment={addedAppointment}
onAddedAppointmentChange={this.changeAddedAppointment}
appointmentChanges={appointmentChanges}
onAppointmentChangesChange={this.changeAppointmentChanges}
editingAppointment={editingAppointment}
onEditingAppointmentChange={this.changeEditingAppointment}
/>
<WeekView
startDayHour={9}
endDayHour={17}
/>
<Appointments />
<AppointmentTooltip
showOpenButton
showDeleteButton
/>
<AppointmentForm />
</Scheduler>
</Paper>
);
}
}
My function component code:
import React, { useState } from 'react';
import Paper from '#material-ui/core/Paper';
import { ViewState, EditingState } from '#devexpress/dx-react-scheduler';
import {
Scheduler,
Appointments,
AppointmentForm,
AppointmentTooltip,
WeekView,
ConfirmationDialog,
} from '#devexpress/dx-react-scheduler-material-ui';
const DataSheet = ( { addShift, shifts, deleteShift } ) => {
const [data, setData] = useState(shifts)
const [currentDate, setCurrentDate] = useState('2018-06-27')
const [addedAppointment, setAddedAppointment] = useState({})
const [appointmentChanges, setAppointmentChanges] = useState({})
const [editingAppointment, setEditingAppointment] = useState(undefined)
const changeAddedAppointment = (addedAppointment) => {
setAddedAppointment({ addedAppointment });
}
const changeAppointmentChanges = (appointmentChanges) => {
setAppointmentChanges({ appointmentChanges });
}
const changeEditingAppointment = (editingAppointment) => {
setEditingAppointment({ editingAppointment });
}
const commitChanges = ({ added, changed, deleted }) => {
setData ((????) => {
let { data } = data;
console.log(data); //returns undefined
if (added) {
const startingAddedId = data > 0 ? data[data.length - 1].id + 1 : 0;
data = [...data, { id: startingAddedId, ...added }];
addShift(added);
}
return { data };
});
}
return (
<Paper>
<Scheduler
data={data}
height={660}
>
<ViewState
currentDate={currentDate}
/>
<EditingState
onCommitChanges={commitChanges}
addedAppointment={addedAppointment}
onAddedAppointmentChange={changeAddedAppointment}
appointmentChanges={appointmentChanges}
onAppointmentChangesChange={changeAppointmentChanges}
editingAppointment={editingAppointment}
onEditingAppointmentChange={changeEditingAppointment}
/>
<WeekView
startDayHour={9}
endDayHour={17}
/>
<Appointments />
<AppointmentTooltip
showOpenButton
showDeleteButton
/>
<AppointmentForm />
</Scheduler>
</Paper>
);
}
export default DataSheet
App.js:
import React from 'react';
import backgroundImage from './Resources/BennyBackground.jpeg'
import Header from "./components/Header";
import { useState, useEffect } from "react"
import DataSheet from './components/DataSheet';
const containerStyle= {
width: '100vw',
height: '100vh',
backgroundImage: `url(${backgroundImage})`,
backgroundPosition: 'center',
backgroundSize: 'cover',
backgroundRepeat: 'no-repeat',
}
const App = () => {
const [shifts, setShifts] = useState([])
useEffect(() => {
const getShifts = async () => {
const shiftsFromServer = await fetchShifts()
setShifts(shiftsFromServer)
}
getShifts()
}, [])
const fetchShifts = async () => {
const res = await fetch(`http://localhost:5000/shifts/`)
const data = await res.json()
return data
}
const addShift = async (shift) => {
const startingAddedId = shifts.length > 0 ? shifts[shifts.length - 1].id + 1 : 0;
shift.id = startingAddedId;
const res = await fetch(`http://localhost:5000/shifts/`,{
method: 'POST',
headers: {
'Content-type': 'application/json'
},
body: JSON.stringify(shift)
})
const data = await res.json()
setShifts([...shifts, data])
}
return (
<div className="container"
style={containerStyle} >
<div className='secondary_container'>
<Header />
<DataSheet shifts={shifts} addShift={addShift}/>
</div>
</div>
);
}
export default App;
I know it is a lot of code and a lot to ask and I would highly appreciate help with this.
I believe the issue is that you are using setXxx as you would use this.setState. In class components, you have one function that modifies all the state (this.setState), while in function components you have a setter function for each field.
So change this:
const changeAddedAppointment = (addedAppointment) => {
setAddedAppointment({ addedAppointment });
}
to this:
const changeAddedAppointment = (addedAppointment) => {
setAddedAppointment(addedAppointment);
}
As far as the commitChanges function goes, you can do the data manipulation before using setData. Also I'm not sure that this let { data } = data would work since there is already a data field. You can try this:
const commitChanges = ({ added, changed, deleted }) => {
let newData = [...data.data];
if (added) {
const startingAddedId = newData > 0 ? newData [data.length - 1].id + 1 : 0;
newData = [...newData , { id: startingAddedId, ...added }];
addShift(added);
}
setData(newData);
};
I'm converting my app from JS to TS. Everything has been working good under JS but when started conversion to TS I'm getting plenty of errors with handle functions like for example handleVideoAdd. Does anyone has idea what am I'm doing wrong? Tried many things without success...
Property 'handleVideoAdd' does not exist on type 'undefined'. TS2339 - and it's pointing out to this fragment of code:
const { handleVideoAdd, inputURL, handleInputURLChange } = useContext(Context)
My code looks like that:
Header.tsx
import { Context } from "../Context";
import React, { useContext } from "react";
import { Navbar, Button, Form, FormControl } from "react-bootstrap";
export default function Header() {
const { handleVideoAdd, inputURL, handleInputURLChange } =
useContext(Context);
return (
<Navbar bg="light" expand="lg">
<Navbar.Brand href="#home">Video App</Navbar.Brand>
<Form onSubmit={handleVideoAdd} inline>
<FormControl
type="text"
name="url"
placeholder="Paste url"
value={inputURL}
onChange={handleInputURLChange}
className="mr-sm-2"
/>
<Button type="submit" variant="outline-success">
Add
</Button>
</Form>
</Navbar>
);
}
Context.tsx
import { useEffect, useMemo, useState } from "react";
import { youtubeApi } from "./APIs/youtubeAPI";
import { vimeoApi } from "./APIs/vimeoAPI";
import React from "react";
import type { FormEvent } from "react";
const Context = React.createContext(undefined);
function ContextProvider({ children }) {
const [inputURL, setInputURL] = useState("");
const [videoData, setVideoData] = useState(() => {
const videoData = localStorage.getItem("videoData");
if (videoData) {
return JSON.parse(videoData);
}
return [];
});
const [filterType, setFilterType] = useState("");
const [videoSources, setVideoSources] = useState([""]);
const [wasSortedBy, setWasSortedBy] = useState(false);
const [showVideoModal, setShowVideoModal] = useState(false);
const [modalData, setModalData] = useState({});
const [showWrongUrlModal, setShowWrongUrlModal] = useState(false);
const createModalSrc = (videoItem) => {
if (checkVideoSource(videoItem.id) === "youtube") {
setModalData({
src: `http://www.youtube.com/embed/${videoItem.id}`,
name: videoItem.name,
});
} else {
setModalData({
src: `https://player.vimeo.com/video/${videoItem.id}`,
name: videoItem.name,
});
}
};
const handleVideoModalShow = (videoID) => {
createModalSrc(videoID);
setShowVideoModal(true);
};
const handleVideoModalClose = () => setShowVideoModal(false);
const handleWrongUrlModalShow = () => setShowWrongUrlModal(true);
const handleWrongUrlModalClose = () => setShowWrongUrlModal(false);
const handleInputURLChange = (e) => {
setInputURL(e.currentTarget.value);
};
const handleVideoAdd = (e: FormEvent<HTMLFormElement>) => {
e.preventDefault();
const source = checkVideoSource(inputURL);
if (source === "youtube") {
handleYouTubeVideo(inputURL);
} else if (source === "vimeo") {
handleVimeoVideo(inputURL);
} else {
handleWrongUrlModalShow();
}
};
const checkVideoSource = (inputURL) => {
if (inputURL.includes("youtu") || inputURL.length === 11) {
return "youtube";
} else if (inputURL.includes("vimeo") || inputURL.length === 9) {
return "vimeo";
}
};
const checkURL = (inputURL) => {
if (!inputURL.includes("http")) {
const properURL = `https://${inputURL}`;
return properURL;
} else {
return inputURL;
}
};
const checkInputType = (inputURL) => {
if (!inputURL.includes("http") && inputURL.length === 11) {
return "id";
} else if (!inputURL.includes("http") && inputURL.length === 9) {
return "id";
} else {
return "url";
}
};
const fetchYouTubeData = async (videoID) => {
const data = await youtubeApi(videoID);
if (data.items.length === 0) {
handleWrongUrlModalShow();
} else {
setVideoData((state) => [
...state,
{
id: videoID,
key: `${videoID}${Math.random()}`,
name: data.items[0].snippet.title,
thumbnail: data.items[0].snippet.thumbnails.medium.url, //default, medium, high
viewCount: data.items[0].statistics.viewCount,
likeCount: data.items[0].statistics.likeCount,
savedDate: new Date(),
favourite: false,
source: "YouTube",
url: inputURL,
},
]);
setInputURL("");
}
};
const handleYouTubeVideo = (inputURL) => {
const inputType = checkInputType(inputURL);
if (inputType === "id") {
fetchYouTubeData(inputURL);
} else {
const checkedURL = checkURL(inputURL);
const url = new URL(checkedURL);
if (inputURL.includes("youtube.com")) {
const params = url.searchParams;
const videoID = params.get("v");
fetchYouTubeData(videoID);
} else {
const videoID = url.pathname.split("/");
fetchYouTubeData(videoID[1]);
}
}
};
const fetchVimeoData = async (videoID) => {
const data = await vimeoApi(videoID);
if (data.hasOwnProperty("error")) {
handleWrongUrlModalShow();
} else {
setVideoData((state) => [
...state,
{
id: videoID,
key: `${videoID}${Math.random()}`,
name: data.name,
thumbnail: data.pictures.sizes[2].link, //0-8
savedDate: new Date(),
viewCount: data.stats.plays,
likeCount: data.metadata.connections.likes.total,
savedDate: new Date(),
favourite: false,
source: "Vimeo",
url: inputURL,
},
]);
setInputURL("");
}
};
const handleVimeoVideo = (inputURL) => {
const inputType = checkInputType(inputURL);
if (inputType === "id") {
fetchVimeoData(inputURL);
} else {
const checkedURL = checkURL(inputURL);
const url = new URL(checkedURL);
const videoID = url.pathname.split("/");
fetchVimeoData(videoID[1]);
}
};
const deleteVideo = (key) => {
let newArray = [...videoData].filter((video) => video.key !== key);
setWasSortedBy(true);
setVideoData(newArray);
};
const deleteAllData = () => {
setVideoData([]);
};
const toggleFavourite = (key) => {
let newArray = [...videoData];
newArray.map((item) => {
if (item.key === key) {
item.favourite = !item.favourite;
}
});
setVideoData(newArray);
};
const handleFilterChange = (type) => {
setFilterType(type);
};
const sourceFiltering = useMemo(() => {
return filterType
? videoData.filter((item) => item.source === filterType)
: videoData;
}, [videoData, filterType]);
const sortDataBy = (sortBy) => {
if (wasSortedBy) {
const reversedArr = [...videoData].reverse();
setVideoData(reversedArr);
} else {
const sortedArr = [...videoData].sort((a, b) => b[sortBy] - a[sortBy]);
setWasSortedBy(true);
setVideoData(sortedArr);
}
};
const exportToJsonFile = () => {
let dataStr = JSON.stringify(videoData);
let dataUri =
"data:application/json;charset=utf-8," + encodeURIComponent(dataStr);
let exportFileDefaultName = "videoData.json";
let linkElement = document.createElement("a");
linkElement.setAttribute("href", dataUri);
linkElement.setAttribute("download", exportFileDefaultName);
linkElement.click();
};
const handleJsonImport = (e) => {
e.preventDefault();
const fileReader = new FileReader();
fileReader.readAsText(e.target.files[0], "UTF-8");
fileReader.onload = (e) => {
const convertedData = JSON.parse(e.target.result);
setVideoData([...convertedData]);
};
};
useEffect(() => {
localStorage.setItem("videoData", JSON.stringify(videoData));
}, [videoData]);
return (
<Context.Provider
value={{
inputURL,
videoData: sourceFiltering,
handleInputURLChange,
handleVideoAdd,
deleteVideo,
toggleFavourite,
handleFilterChange,
videoSources,
sortDataBy,
deleteAllData,
exportToJsonFile,
handleJsonImport,
handleVideoModalClose,
handleVideoModalShow,
showVideoModal,
modalData,
showWrongUrlModal,
handleWrongUrlModalShow,
handleWrongUrlModalClose,
}}
>
{children}
</Context.Provider>
);
}
export { ContextProvider, Context };
App.js (not converted to TS yet)
import React from "react";
import ReactDOM from "react-dom";
import "./index.css";
import App from "./App";
import "bootstrap/dist/css/bootstrap.min.css";
import reportWebVitals from "./reportWebVitals";
import { ContextProvider } from "./Context.tsx";
ReactDOM.render(
<React.StrictMode>
<ContextProvider>
<App />
</ContextProvider>
</React.StrictMode>,
document.getElementById("root")
);
reportWebVitals();
This is because when you created your context you defaulted it to undefined.
This happens here: const Context = React.createContext(undefined)
You can't say undefined.handleVideoAdd. But you could theoretically say {}.handleVideoAdd.
So if you default your context to {} at the start like this: const Context = React.createContext({})
Your app shouldn't crash up front anymore.
EDIT: I see you're using TypeScript, in that case you're going to need to create an interface for your context. Something like this:
interface MyContext {
inputURL?: string,
videoData?: any,
handleInputURLChange?: () => void,
handleVideoAdd?: () => void,
deleteVideo?: () => void,
// and all the rest of your keys
}
Then when creating your context do this:
const Context = React.createContext<MyContext>(undefined);
I am trying to make live search for name in table but i can't make live search i don't know how to do this i wrote my code like this as i mentioned please help me how to make live search on name field foe table and in Search Page i used onSubmit={this.props.loaddata like this thanks
import React, { Component } from "react";
import Search from "../../views/Cars/Search";
class Search1 extends Component {
constructor(props) {
super(props);
this.state = {
query: []
};
}
// Get Data from filter date
getData = async e => {
try {
const search = e.target.elements.search.value;
e.preventDefault();
const res = await fetch(`https://swapi.co/api/people/?search=${search}`);
const query = await res.json();
console.log(query);
this.setState({
query: query.results
});
} catch (e) {
console.log(e);
}
};
async componentDidMount() {
// let authToken = localStorage.getItem("Token");
try {
const res = await fetch(`https://swapi.co/api/people/`);
const query = await res.json();
// console.log(movie);
this.setState({
query: query.results
});
} catch (e) {
console.log(e);
}
}
render() {
const options = this.state.query.map(r => <li key={r.id}>{r.name}</li>);
return (
<div>
<Search loaddata={this.getData} />
{options}
</div>
);
}
}
export default Search1;
Genrally You can try React-Search
import Search from 'react-search'
import ReactDOM from 'react-dom'
import React, { Component, PropTypes } from 'react'
class TestComponent extends Component {
HiItems(items) {
console.log(items)
}
render () {
let items = [
{ id: 0, value: 'ruby' },
{ id: 1, value: 'javascript' },
{ id: 2, value: 'lua' },
{ id: 3, value: 'go' },
{ id: 4, value: 'julia' }
]
return (
<div>
<Search items={items} />
<Search items={items}
placeholder='Pick your language'
maxSelected={3}
multiple={true}
onItemsChanged={this.HiItems.bind(this)} />
</div>
)
}
}
Made few changes to your component. Send e.target.value from your child component
class Search1 extends Component {
constructor(props) {
super(props);
this.state = {
query: []
};
}
// Get Data from filter date
getData = search => {
const url = `https://swapi.co/api/people${search ? `/?search=${search}` : ``}`;
// e.preventDefault();
fetch(url)
.then(res => res.json())
.then(data =>
this.setState({
query: data.results || []
})).catch(e => console.log(e));
};
async componentDidMount() {
// let authToken = localStorage.getItem("Token");
this.getData();
}
render() {
const options = this.state.query.map(r => <li key={r.id}>{r.name}</li>);
return (
<div>
<Search loaddata={this.getData} />
{options}
</div>
);
}
}
export default Search1;
For Gettind Data from Api you can follow this code of react-search
import Search from 'react-search'
import ReactDOM from 'react-dom'
import React, { Component, PropTypes } from 'react'
class TestComponent extends Component {
constructor (props) {
super(props)
this.state = { repos: [] }
}
getItemsAsync(searchValue, cb) {
let url = `https://api.github.com/search/repositories?q=${searchValue}&language=javascript`
fetch(url).then( (response) => {
return response.json();
}).then((results) => {
if(results.items != undefined){
let items = results.items.map( (res, i) => { return { id: i, value: res.full_name } })
this.setState({ repos: items })
cb(searchValue)
}
});
}
render () {
return (
<div>
<Search items={this.state.repos}
multiple={true}
getItemsAsync={this.getItemsAsync.bind(this)}
onItemsChanged={this.HiItems.bind(this)} />
</div>
)
}