Tip: To avoid an infinite loop, all the network requests are needed to be inside a conditional statement as: componentDidUpdate(prevProps, prevState) { if (prevState. data !== this.
There are four triggers that kick off these lifecycle events; Intiatilization, Updating State, Updating Props and Unmounting. The componentDidUpdate event is triggered whenever there is a state or props update. ComponentDidUpdate() has access to three properties, two of which are most often used more than the third.
With the release of React 16.3, some new lifecycle methods have been introduced, and release of React 17 will deprecate some lifecycle method. getDerivedStateFromProps is one of those newly introduced lifecycle method replacing componentWillReceiveProps , which has now become UNSAFE_componentWillReceiveProps .
The useEffect hook is also the equivalent of the componentWillReceiveProps or componentDidUpdate hooks. All we have to do is to pass in an array with the value that we want to watch for changes.
I'm trying to update the state after changing state from a child component and without success, every time I call the function I got a stack overflow, the prop is calling infinite times the function, but the question is, I really need to update this state and have no idea how to solve this currently.
Parent
import React, { PropTypes, Component } from 'react';
import Card from './card/card.js';
import style from './style.scss';
class Container extends Component {
constructor(props) {
super(props);
this.state = {
isFlipped: false,
oneOpened: true,
history: [],
childFlipToFalse: false,
};
this.historyToggleStates = this.historyToggleStates.bind(this);
this.forceFlipParent = this.forceFlipParent.bind(this);
this.checkForceFlip = false;
}
historyToggleStates(bool, id, callForceFlip) {
this.setState({
history: this.state.history.concat([{ opened: bool, id }]),
}, () => {
console.log('inside historyToggleStates');
if (callForceFlip) {
this.forceFlipParent()
}
});
}
forceFlipParent() {
const { history } = this.state;
const first = history[0];
const last = history[history.length - 1];
const beforeLast = history[history.length - 2];
console.log('force FLIP PARENT');
if (history.length > 1) {
if (JSON.stringify(last.opened) === JSON.stringify(beforeLast.opened)) {
this.setState({ childFlipToFalse: true });
}
}
}
render() {
const rest = {
basePath: this.props.basePath,
backCard: this.props.backCard,
isShowing: this.props.isShowing,
historyToggleStates: this.historyToggleStates,
isOpened: this.state.isOpened,
isFlipped: this.state.isFlipped,
checkOneOpened: this.checkOneOpened,
history: this.state.history,
forceFlip: this.state.childFlipToFalse,
flipToFalse: this.forceFlipParent,
};
const cardsMap = this.props.cards.map((item, key) => {
return (
<Card
item={item}
keyId={key}
{...rest}
/>
);
});
return (
<div className="col-lg-12 text-center">
{cardsMap}
</div>
);
}
}
export default Container;
Container.propTypes = {
cards: PropTypes.array.isRequired,
item: PropTypes.func,
basePath: PropTypes.string,
backCard: PropTypes.string,
isShowing: PropTypes.bool,
};
Child
import React, { Component, PropTypes } from 'react';
import ReactCardFlip from 'react-card-flip';
import style from './style.scss';
class Card extends Component {
constructor(props) {
super(props);
this.state = {
isFlipped: false,
update: false,
id: 9999999,
};
this.handleClick = this.handleClick.bind(this);
this.checkOneOpened = this.checkOneOpened.bind(this);
}
componentWillReceiveProps(nextprops) {
const { history, isFlipped, historyToggleStates } = this.props;
const last = nextprops.history[nextprops.history.length - 1];
const beforeLast = nextprops.history[nextprops.history.length - 2];
console.log(history);
console.log(nextprops.history);
if (nextprops.forceFlip && last.id === nextprops.keyId) {
this.setState({ isFlipped: !this.state.isFlipped, update: true, id: last.id }, () => {
console.log('callback willreceiveprops', this.state.isFlipped);
historyToggleStates(this.state.isFlipped, nextprops.keyId, true, this.state.update); **<--- Here's my problem**
});
}
if (nextprops.forceFlip && beforeLast.id === nextprops.keyId) {
this.setState({ isFlipped: !this.state.isFlipped, update: true, id: beforeLast.id }, () => {
});
}
}
handleClick(e, nextState, id) {
const { keyId, historyToggleStates, forceFlip } = this.props;
if (e) {
e.preventDefault();
}
if (!nextState) {
this.setState({ isFlipped: !this.state.isFlipped }, () => {
historyToggleStates(this.state.isFlipped, keyId, true, this.state.update);
});
} else {
// historyToggleStates(nextState, id, false);
return 0;
}
}
checkOneOpened(e) {
if (!this.props.isShowing) {
this.handleClick(e);
}
}
render() {
const { item, basePath, backCard, isShowing, isFlipped, forceFlip } = this.props;
return (
<div className={`col-lg-2 col-md-3 col-sm-6 ${style.card}`}>
<ReactCardFlip
isFlipped={this.state.isFlipped}
flipSpeedBackToFront={0.9}
flipSpeedFrontToBack={0.9}
>
<div key="front">
<button
onClick={() => {this.checkOneOpened()}}
>
<img src={isShowing ? `${basePath}${item.image}` : backCard} alt={item.name} className={`${style.img}`} />
</button>
</div>
<div key="back">
<button
onClick={() => {this.checkOneOpened()}}
>
<img src={isShowing ? backCard : `${basePath}${item.image}`} alt={item.name} className={`${style.img}`} />
</button>
</div>
</ReactCardFlip>
</div>
);
}
}
export default Card;
Card.propTypes = {
basePath: PropTypes.string,
backCard: PropTypes.string,
isShowing: PropTypes.bool,
historyToggleStates: PropTypes.func,
isOpened: PropTypes.bool,
isFlipped: PropTypes.bool,
checkOneOpened: PropTypes.func,
};
historyToggleStates(this.state.isFlipped, nextprops.keyId, true, this.state.update) is the root of my issue, and I really need to update this because I'm comparing the array inside him with another array
Update 1: I know that my calling to historyToggleStates is being done in the couple cases, but as you can see I need to update my state from the parent because I compare this value every time in my componentWillReceiprops from my child component.
Is it really necessary a state manager for this situation? I'm following the tips from Dan Abramov, and avoiding raise the complexity of the system, any tip would be appreciated.
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