React Component Props are receiving late. (Meteor JS)
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I am working on a react-native and meteor js project.
My problem is that the props received from withTracker() function are only received in componentDidUpdate(prevProps) I don't get them in constructor or componentWillMount.
Another issue is when i pass props directly from parent to child. it receives them late due to which my component does not update
iconGroups prop comes from withTracker() method
and openSection props which i am using in this showGroupIcons()
is passed directly from parent to this component.
I want to open Accordian section that is passed to it via parent. but problem is in componentDidUpdate(prevProps) I am changing state due to which component re-renders.
openSection variable by default value is Zero. when props arrvies it value changes which i required But Accordian does not update.
Below is my code
import React, { Component } from 'react';
import Meteor, { withTracker } from 'react-native-meteor';
import {
View, Image, ScrollView, TouchableOpacity,
} from 'react-native';
import PopupDialog from 'react-native-popup-dialog';
import {Text, Icon, Input, Item, List,} from 'native-base';
import Accordion from 'react-native-collapsible/Accordion';
import { Col, Row, Grid } from 'react-native-easy-grid';
import styles from './styles';
import CONFIG from '../../config/constant';
import {MO} from "../../index";
const staticUrl = '../../assets/img/icons/';
class IconPickerComponent extends Component {
constructor(props) {
super(props);
this.state = {
dataSource: ,
itemName: 'apple1',
activeSections: 0,
showAccordian: true,
accordianData:
};
}
componentDidUpdate(prevProps) {
if(prevProps.iconGroups !== this.props.iconGroups) {
let images = this.props.iconGroups.map(icon => icon.images);
let flatten = .concat.apply(, images).map(img => { return {name: img, icon: CONFIG.ICON_URL+img+'.png'} })
this.setState({ filteredItems: flatten, dataSource: flatten, accordianData: this.props.iconGroups });
}
}
componentDidMount() {
this.props.onRef(this);
}
componentWillUnmount() {
this.props.onRef(null);
}
method() {
// this.setState(...this.state,{
// searchText: ''
// })
this.iconPicker.show(); // show icon picker
}
onSearchChange(text) {
this.setState({
showAccordian: !(text.length > 0)
});
const searchText = text.toLowerCase();
const filteredItems = this.state.dataSource.filter((item) => {
const itemText = item.name.toLowerCase();
return itemText.indexOf(searchText) !== -1;
});
this.setState({ filteredItems });
}
onIconSelect(item) {
this.setState({
itemName: item,
});
this.iconPicker.dismiss();
if (this.props.onIconChanged) {
this.props.onIconChanged(item);
}
}
_renderSectionTitle = section => {
return (
<View style={styles.content}>
<Text></Text>
</View>
);
};
_renderHeader = section => {
return (
<View style={styles.accordHeader}>
<Text style={{color: 'white'}}>{this.state.showAccordian} - {section.group}</Text>
<Text>
<Icon style={styles.downArrow} name="ios-arrow-down" />
</Text>
</View>
);
};
_renderContent = section => {
return (
<View style={styles.accordContent}>
{
section.images.map((img, key) => (
<TouchableOpacity onPress={() => this.onIconSelect(img)} key={key}>
<View style={styles.iconsGrid}>
<Image style={styles.image} source={{uri: CONFIG.ICON_URL+ img + '.png'}}/>
</View>
</TouchableOpacity>
))
}
</View>
);
};
_updateSections = activeSections => {
this.setState({ activeSections });
};
hasGroupIcons() {
return this.props.iconGroups.length > 0;
};
showGroupIcons() {
if(this.state.showAccordian){
let openSection;
if(!!this.props.openSection) {
let groupIndex = this.state.accordianData.findIndex(icon => icon.group === this.props.openSection);
if(groupIndex !== -1) {
openSection = groupIndex;
} else {
openSection = 0;
}
} else {
openSection = 0;
}
return(<Accordion
sections={this.state.accordianData}
activeSections={this.state.activeSections}
renderSectionTitle={this._renderSectionTitle}
renderHeader={this._renderHeader}
renderContent={this._renderContent}
onChange={this._updateSections}
initiallyActiveSection={openSection} />);
} else {
return(<View style={{flexWrap: 'wrap', flexDirection: 'row'}}>
{
this.state.filteredItems.map((item, key) => (
<TouchableOpacity onPress={() => this.onIconSelect(item.name)} key={key}>
<View style={styles.iconsGrid}>
<Image style={styles.image} source={{uri: item.icon}}/>
</View>
</TouchableOpacity>
))
}
</View>)
}
};
render() {
return (
<PopupDialog
overlayOpacity={0.8}
overlayBackgroundColor="#414141"
dialogStyle={styles.dialogBox}
containerStyle={styles.dialogContainer}
ref={(popupDialog) => { this.iconPicker = popupDialog; }}
>
<ScrollView>
<View style={styles.dialogInner}>
<Item searchBar rounded style={styles.searchbar}>
<Icon style={styles.searchIcon} name="search" />
<Input onChangeText={this.onSearchChange.bind(this)} style={styles.inputSearch} placeholder="Search" />
</Item>
{
this.hasGroupIcons() && this.showGroupIcons()
}
</View>
</ScrollView>
</PopupDialog>
);
}
}
export default withTracker(params => {
MO.subscribe('ipSubsId3', 'IconGroups');
return {
iconGroups: MO.collection('IconGroups', 'ipSubsId3').find({}),
};
})(IconPickerComponent);
I am new to react. I am assuming when props change component re-renders.
reactjs react-native meteor react-redux
add a comment |
up vote
0
down vote
favorite
I am working on a react-native and meteor js project.
My problem is that the props received from withTracker() function are only received in componentDidUpdate(prevProps) I don't get them in constructor or componentWillMount.
Another issue is when i pass props directly from parent to child. it receives them late due to which my component does not update
iconGroups prop comes from withTracker() method
and openSection props which i am using in this showGroupIcons()
is passed directly from parent to this component.
I want to open Accordian section that is passed to it via parent. but problem is in componentDidUpdate(prevProps) I am changing state due to which component re-renders.
openSection variable by default value is Zero. when props arrvies it value changes which i required But Accordian does not update.
Below is my code
import React, { Component } from 'react';
import Meteor, { withTracker } from 'react-native-meteor';
import {
View, Image, ScrollView, TouchableOpacity,
} from 'react-native';
import PopupDialog from 'react-native-popup-dialog';
import {Text, Icon, Input, Item, List,} from 'native-base';
import Accordion from 'react-native-collapsible/Accordion';
import { Col, Row, Grid } from 'react-native-easy-grid';
import styles from './styles';
import CONFIG from '../../config/constant';
import {MO} from "../../index";
const staticUrl = '../../assets/img/icons/';
class IconPickerComponent extends Component {
constructor(props) {
super(props);
this.state = {
dataSource: ,
itemName: 'apple1',
activeSections: 0,
showAccordian: true,
accordianData:
};
}
componentDidUpdate(prevProps) {
if(prevProps.iconGroups !== this.props.iconGroups) {
let images = this.props.iconGroups.map(icon => icon.images);
let flatten = .concat.apply(, images).map(img => { return {name: img, icon: CONFIG.ICON_URL+img+'.png'} })
this.setState({ filteredItems: flatten, dataSource: flatten, accordianData: this.props.iconGroups });
}
}
componentDidMount() {
this.props.onRef(this);
}
componentWillUnmount() {
this.props.onRef(null);
}
method() {
// this.setState(...this.state,{
// searchText: ''
// })
this.iconPicker.show(); // show icon picker
}
onSearchChange(text) {
this.setState({
showAccordian: !(text.length > 0)
});
const searchText = text.toLowerCase();
const filteredItems = this.state.dataSource.filter((item) => {
const itemText = item.name.toLowerCase();
return itemText.indexOf(searchText) !== -1;
});
this.setState({ filteredItems });
}
onIconSelect(item) {
this.setState({
itemName: item,
});
this.iconPicker.dismiss();
if (this.props.onIconChanged) {
this.props.onIconChanged(item);
}
}
_renderSectionTitle = section => {
return (
<View style={styles.content}>
<Text></Text>
</View>
);
};
_renderHeader = section => {
return (
<View style={styles.accordHeader}>
<Text style={{color: 'white'}}>{this.state.showAccordian} - {section.group}</Text>
<Text>
<Icon style={styles.downArrow} name="ios-arrow-down" />
</Text>
</View>
);
};
_renderContent = section => {
return (
<View style={styles.accordContent}>
{
section.images.map((img, key) => (
<TouchableOpacity onPress={() => this.onIconSelect(img)} key={key}>
<View style={styles.iconsGrid}>
<Image style={styles.image} source={{uri: CONFIG.ICON_URL+ img + '.png'}}/>
</View>
</TouchableOpacity>
))
}
</View>
);
};
_updateSections = activeSections => {
this.setState({ activeSections });
};
hasGroupIcons() {
return this.props.iconGroups.length > 0;
};
showGroupIcons() {
if(this.state.showAccordian){
let openSection;
if(!!this.props.openSection) {
let groupIndex = this.state.accordianData.findIndex(icon => icon.group === this.props.openSection);
if(groupIndex !== -1) {
openSection = groupIndex;
} else {
openSection = 0;
}
} else {
openSection = 0;
}
return(<Accordion
sections={this.state.accordianData}
activeSections={this.state.activeSections}
renderSectionTitle={this._renderSectionTitle}
renderHeader={this._renderHeader}
renderContent={this._renderContent}
onChange={this._updateSections}
initiallyActiveSection={openSection} />);
} else {
return(<View style={{flexWrap: 'wrap', flexDirection: 'row'}}>
{
this.state.filteredItems.map((item, key) => (
<TouchableOpacity onPress={() => this.onIconSelect(item.name)} key={key}>
<View style={styles.iconsGrid}>
<Image style={styles.image} source={{uri: item.icon}}/>
</View>
</TouchableOpacity>
))
}
</View>)
}
};
render() {
return (
<PopupDialog
overlayOpacity={0.8}
overlayBackgroundColor="#414141"
dialogStyle={styles.dialogBox}
containerStyle={styles.dialogContainer}
ref={(popupDialog) => { this.iconPicker = popupDialog; }}
>
<ScrollView>
<View style={styles.dialogInner}>
<Item searchBar rounded style={styles.searchbar}>
<Icon style={styles.searchIcon} name="search" />
<Input onChangeText={this.onSearchChange.bind(this)} style={styles.inputSearch} placeholder="Search" />
</Item>
{
this.hasGroupIcons() && this.showGroupIcons()
}
</View>
</ScrollView>
</PopupDialog>
);
}
}
export default withTracker(params => {
MO.subscribe('ipSubsId3', 'IconGroups');
return {
iconGroups: MO.collection('IconGroups', 'ipSubsId3').find({}),
};
})(IconPickerComponent);
I am new to react. I am assuming when props change component re-renders.
reactjs react-native meteor react-redux
Use thisgetDerivedStateFromProps
life cycle method
– Raaj Nadar
Nov 22 at 12:02
did my solution work??
– Raaj Nadar
Nov 23 at 8:06
@RaajNadar I had the same issue after using your suggested lifecycle method.
– Danial
Nov 23 at 9:05
I have fixed this issue. Actually my concepts were not right. I think props are received only in render method. but not in lifecycle method. because when i call a method from render then it has all the props but when i get props in lifecycle method it does not have all props at the same time.
– Danial
Nov 23 at 9:08
Default props should fix the issue, because it will be loaded before the render method.
– Raaj Nadar
Nov 23 at 9:19
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I am working on a react-native and meteor js project.
My problem is that the props received from withTracker() function are only received in componentDidUpdate(prevProps) I don't get them in constructor or componentWillMount.
Another issue is when i pass props directly from parent to child. it receives them late due to which my component does not update
iconGroups prop comes from withTracker() method
and openSection props which i am using in this showGroupIcons()
is passed directly from parent to this component.
I want to open Accordian section that is passed to it via parent. but problem is in componentDidUpdate(prevProps) I am changing state due to which component re-renders.
openSection variable by default value is Zero. when props arrvies it value changes which i required But Accordian does not update.
Below is my code
import React, { Component } from 'react';
import Meteor, { withTracker } from 'react-native-meteor';
import {
View, Image, ScrollView, TouchableOpacity,
} from 'react-native';
import PopupDialog from 'react-native-popup-dialog';
import {Text, Icon, Input, Item, List,} from 'native-base';
import Accordion from 'react-native-collapsible/Accordion';
import { Col, Row, Grid } from 'react-native-easy-grid';
import styles from './styles';
import CONFIG from '../../config/constant';
import {MO} from "../../index";
const staticUrl = '../../assets/img/icons/';
class IconPickerComponent extends Component {
constructor(props) {
super(props);
this.state = {
dataSource: ,
itemName: 'apple1',
activeSections: 0,
showAccordian: true,
accordianData:
};
}
componentDidUpdate(prevProps) {
if(prevProps.iconGroups !== this.props.iconGroups) {
let images = this.props.iconGroups.map(icon => icon.images);
let flatten = .concat.apply(, images).map(img => { return {name: img, icon: CONFIG.ICON_URL+img+'.png'} })
this.setState({ filteredItems: flatten, dataSource: flatten, accordianData: this.props.iconGroups });
}
}
componentDidMount() {
this.props.onRef(this);
}
componentWillUnmount() {
this.props.onRef(null);
}
method() {
// this.setState(...this.state,{
// searchText: ''
// })
this.iconPicker.show(); // show icon picker
}
onSearchChange(text) {
this.setState({
showAccordian: !(text.length > 0)
});
const searchText = text.toLowerCase();
const filteredItems = this.state.dataSource.filter((item) => {
const itemText = item.name.toLowerCase();
return itemText.indexOf(searchText) !== -1;
});
this.setState({ filteredItems });
}
onIconSelect(item) {
this.setState({
itemName: item,
});
this.iconPicker.dismiss();
if (this.props.onIconChanged) {
this.props.onIconChanged(item);
}
}
_renderSectionTitle = section => {
return (
<View style={styles.content}>
<Text></Text>
</View>
);
};
_renderHeader = section => {
return (
<View style={styles.accordHeader}>
<Text style={{color: 'white'}}>{this.state.showAccordian} - {section.group}</Text>
<Text>
<Icon style={styles.downArrow} name="ios-arrow-down" />
</Text>
</View>
);
};
_renderContent = section => {
return (
<View style={styles.accordContent}>
{
section.images.map((img, key) => (
<TouchableOpacity onPress={() => this.onIconSelect(img)} key={key}>
<View style={styles.iconsGrid}>
<Image style={styles.image} source={{uri: CONFIG.ICON_URL+ img + '.png'}}/>
</View>
</TouchableOpacity>
))
}
</View>
);
};
_updateSections = activeSections => {
this.setState({ activeSections });
};
hasGroupIcons() {
return this.props.iconGroups.length > 0;
};
showGroupIcons() {
if(this.state.showAccordian){
let openSection;
if(!!this.props.openSection) {
let groupIndex = this.state.accordianData.findIndex(icon => icon.group === this.props.openSection);
if(groupIndex !== -1) {
openSection = groupIndex;
} else {
openSection = 0;
}
} else {
openSection = 0;
}
return(<Accordion
sections={this.state.accordianData}
activeSections={this.state.activeSections}
renderSectionTitle={this._renderSectionTitle}
renderHeader={this._renderHeader}
renderContent={this._renderContent}
onChange={this._updateSections}
initiallyActiveSection={openSection} />);
} else {
return(<View style={{flexWrap: 'wrap', flexDirection: 'row'}}>
{
this.state.filteredItems.map((item, key) => (
<TouchableOpacity onPress={() => this.onIconSelect(item.name)} key={key}>
<View style={styles.iconsGrid}>
<Image style={styles.image} source={{uri: item.icon}}/>
</View>
</TouchableOpacity>
))
}
</View>)
}
};
render() {
return (
<PopupDialog
overlayOpacity={0.8}
overlayBackgroundColor="#414141"
dialogStyle={styles.dialogBox}
containerStyle={styles.dialogContainer}
ref={(popupDialog) => { this.iconPicker = popupDialog; }}
>
<ScrollView>
<View style={styles.dialogInner}>
<Item searchBar rounded style={styles.searchbar}>
<Icon style={styles.searchIcon} name="search" />
<Input onChangeText={this.onSearchChange.bind(this)} style={styles.inputSearch} placeholder="Search" />
</Item>
{
this.hasGroupIcons() && this.showGroupIcons()
}
</View>
</ScrollView>
</PopupDialog>
);
}
}
export default withTracker(params => {
MO.subscribe('ipSubsId3', 'IconGroups');
return {
iconGroups: MO.collection('IconGroups', 'ipSubsId3').find({}),
};
})(IconPickerComponent);
I am new to react. I am assuming when props change component re-renders.
reactjs react-native meteor react-redux
I am working on a react-native and meteor js project.
My problem is that the props received from withTracker() function are only received in componentDidUpdate(prevProps) I don't get them in constructor or componentWillMount.
Another issue is when i pass props directly from parent to child. it receives them late due to which my component does not update
iconGroups prop comes from withTracker() method
and openSection props which i am using in this showGroupIcons()
is passed directly from parent to this component.
I want to open Accordian section that is passed to it via parent. but problem is in componentDidUpdate(prevProps) I am changing state due to which component re-renders.
openSection variable by default value is Zero. when props arrvies it value changes which i required But Accordian does not update.
Below is my code
import React, { Component } from 'react';
import Meteor, { withTracker } from 'react-native-meteor';
import {
View, Image, ScrollView, TouchableOpacity,
} from 'react-native';
import PopupDialog from 'react-native-popup-dialog';
import {Text, Icon, Input, Item, List,} from 'native-base';
import Accordion from 'react-native-collapsible/Accordion';
import { Col, Row, Grid } from 'react-native-easy-grid';
import styles from './styles';
import CONFIG from '../../config/constant';
import {MO} from "../../index";
const staticUrl = '../../assets/img/icons/';
class IconPickerComponent extends Component {
constructor(props) {
super(props);
this.state = {
dataSource: ,
itemName: 'apple1',
activeSections: 0,
showAccordian: true,
accordianData:
};
}
componentDidUpdate(prevProps) {
if(prevProps.iconGroups !== this.props.iconGroups) {
let images = this.props.iconGroups.map(icon => icon.images);
let flatten = .concat.apply(, images).map(img => { return {name: img, icon: CONFIG.ICON_URL+img+'.png'} })
this.setState({ filteredItems: flatten, dataSource: flatten, accordianData: this.props.iconGroups });
}
}
componentDidMount() {
this.props.onRef(this);
}
componentWillUnmount() {
this.props.onRef(null);
}
method() {
// this.setState(...this.state,{
// searchText: ''
// })
this.iconPicker.show(); // show icon picker
}
onSearchChange(text) {
this.setState({
showAccordian: !(text.length > 0)
});
const searchText = text.toLowerCase();
const filteredItems = this.state.dataSource.filter((item) => {
const itemText = item.name.toLowerCase();
return itemText.indexOf(searchText) !== -1;
});
this.setState({ filteredItems });
}
onIconSelect(item) {
this.setState({
itemName: item,
});
this.iconPicker.dismiss();
if (this.props.onIconChanged) {
this.props.onIconChanged(item);
}
}
_renderSectionTitle = section => {
return (
<View style={styles.content}>
<Text></Text>
</View>
);
};
_renderHeader = section => {
return (
<View style={styles.accordHeader}>
<Text style={{color: 'white'}}>{this.state.showAccordian} - {section.group}</Text>
<Text>
<Icon style={styles.downArrow} name="ios-arrow-down" />
</Text>
</View>
);
};
_renderContent = section => {
return (
<View style={styles.accordContent}>
{
section.images.map((img, key) => (
<TouchableOpacity onPress={() => this.onIconSelect(img)} key={key}>
<View style={styles.iconsGrid}>
<Image style={styles.image} source={{uri: CONFIG.ICON_URL+ img + '.png'}}/>
</View>
</TouchableOpacity>
))
}
</View>
);
};
_updateSections = activeSections => {
this.setState({ activeSections });
};
hasGroupIcons() {
return this.props.iconGroups.length > 0;
};
showGroupIcons() {
if(this.state.showAccordian){
let openSection;
if(!!this.props.openSection) {
let groupIndex = this.state.accordianData.findIndex(icon => icon.group === this.props.openSection);
if(groupIndex !== -1) {
openSection = groupIndex;
} else {
openSection = 0;
}
} else {
openSection = 0;
}
return(<Accordion
sections={this.state.accordianData}
activeSections={this.state.activeSections}
renderSectionTitle={this._renderSectionTitle}
renderHeader={this._renderHeader}
renderContent={this._renderContent}
onChange={this._updateSections}
initiallyActiveSection={openSection} />);
} else {
return(<View style={{flexWrap: 'wrap', flexDirection: 'row'}}>
{
this.state.filteredItems.map((item, key) => (
<TouchableOpacity onPress={() => this.onIconSelect(item.name)} key={key}>
<View style={styles.iconsGrid}>
<Image style={styles.image} source={{uri: item.icon}}/>
</View>
</TouchableOpacity>
))
}
</View>)
}
};
render() {
return (
<PopupDialog
overlayOpacity={0.8}
overlayBackgroundColor="#414141"
dialogStyle={styles.dialogBox}
containerStyle={styles.dialogContainer}
ref={(popupDialog) => { this.iconPicker = popupDialog; }}
>
<ScrollView>
<View style={styles.dialogInner}>
<Item searchBar rounded style={styles.searchbar}>
<Icon style={styles.searchIcon} name="search" />
<Input onChangeText={this.onSearchChange.bind(this)} style={styles.inputSearch} placeholder="Search" />
</Item>
{
this.hasGroupIcons() && this.showGroupIcons()
}
</View>
</ScrollView>
</PopupDialog>
);
}
}
export default withTracker(params => {
MO.subscribe('ipSubsId3', 'IconGroups');
return {
iconGroups: MO.collection('IconGroups', 'ipSubsId3').find({}),
};
})(IconPickerComponent);
I am new to react. I am assuming when props change component re-renders.
reactjs react-native meteor react-redux
reactjs react-native meteor react-redux
asked Nov 22 at 11:32
Danial
1079
1079
Use thisgetDerivedStateFromProps
life cycle method
– Raaj Nadar
Nov 22 at 12:02
did my solution work??
– Raaj Nadar
Nov 23 at 8:06
@RaajNadar I had the same issue after using your suggested lifecycle method.
– Danial
Nov 23 at 9:05
I have fixed this issue. Actually my concepts were not right. I think props are received only in render method. but not in lifecycle method. because when i call a method from render then it has all the props but when i get props in lifecycle method it does not have all props at the same time.
– Danial
Nov 23 at 9:08
Default props should fix the issue, because it will be loaded before the render method.
– Raaj Nadar
Nov 23 at 9:19
add a comment |
Use thisgetDerivedStateFromProps
life cycle method
– Raaj Nadar
Nov 22 at 12:02
did my solution work??
– Raaj Nadar
Nov 23 at 8:06
@RaajNadar I had the same issue after using your suggested lifecycle method.
– Danial
Nov 23 at 9:05
I have fixed this issue. Actually my concepts were not right. I think props are received only in render method. but not in lifecycle method. because when i call a method from render then it has all the props but when i get props in lifecycle method it does not have all props at the same time.
– Danial
Nov 23 at 9:08
Default props should fix the issue, because it will be loaded before the render method.
– Raaj Nadar
Nov 23 at 9:19
Use this
getDerivedStateFromProps
life cycle method– Raaj Nadar
Nov 22 at 12:02
Use this
getDerivedStateFromProps
life cycle method– Raaj Nadar
Nov 22 at 12:02
did my solution work??
– Raaj Nadar
Nov 23 at 8:06
did my solution work??
– Raaj Nadar
Nov 23 at 8:06
@RaajNadar I had the same issue after using your suggested lifecycle method.
– Danial
Nov 23 at 9:05
@RaajNadar I had the same issue after using your suggested lifecycle method.
– Danial
Nov 23 at 9:05
I have fixed this issue. Actually my concepts were not right. I think props are received only in render method. but not in lifecycle method. because when i call a method from render then it has all the props but when i get props in lifecycle method it does not have all props at the same time.
– Danial
Nov 23 at 9:08
I have fixed this issue. Actually my concepts were not right. I think props are received only in render method. but not in lifecycle method. because when i call a method from render then it has all the props but when i get props in lifecycle method it does not have all props at the same time.
– Danial
Nov 23 at 9:08
Default props should fix the issue, because it will be loaded before the render method.
– Raaj Nadar
Nov 23 at 9:19
Default props should fix the issue, because it will be loaded before the render method.
– Raaj Nadar
Nov 23 at 9:19
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2 Answers
2
active
oldest
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up vote
1
down vote
Use this life cycle method
static getDerivedStateFromProps(prevProps, prevState) {
if(prevProps.iconGroups !== this.props.iconGroups) {
let images = this.props.iconGroups.map(icon => icon.images);
let flatten = .concat.apply(, images).map(img => { return {name: img, icon: CONFIG.ICON_URL+img+'.png'} })
this.setState({ filteredItems: flatten, dataSource: flatten, accordianData: this.props.iconGroups });
}
}
getDerivedStateFromProps
is invoked right before calling the render method, both on the initial mount and on subsequent updates. It should return an object to update the state, or null to update nothing.
Read more about this lifecycle method here
add a comment |
up vote
0
down vote
I have fixed this issue. Actually my concepts were not right. I thought props are first received in constructor and componentWillMount. But I get all props in render() and everything works fine i dont have to use any lifecycle method to use props now
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
Use this life cycle method
static getDerivedStateFromProps(prevProps, prevState) {
if(prevProps.iconGroups !== this.props.iconGroups) {
let images = this.props.iconGroups.map(icon => icon.images);
let flatten = .concat.apply(, images).map(img => { return {name: img, icon: CONFIG.ICON_URL+img+'.png'} })
this.setState({ filteredItems: flatten, dataSource: flatten, accordianData: this.props.iconGroups });
}
}
getDerivedStateFromProps
is invoked right before calling the render method, both on the initial mount and on subsequent updates. It should return an object to update the state, or null to update nothing.
Read more about this lifecycle method here
add a comment |
up vote
1
down vote
Use this life cycle method
static getDerivedStateFromProps(prevProps, prevState) {
if(prevProps.iconGroups !== this.props.iconGroups) {
let images = this.props.iconGroups.map(icon => icon.images);
let flatten = .concat.apply(, images).map(img => { return {name: img, icon: CONFIG.ICON_URL+img+'.png'} })
this.setState({ filteredItems: flatten, dataSource: flatten, accordianData: this.props.iconGroups });
}
}
getDerivedStateFromProps
is invoked right before calling the render method, both on the initial mount and on subsequent updates. It should return an object to update the state, or null to update nothing.
Read more about this lifecycle method here
add a comment |
up vote
1
down vote
up vote
1
down vote
Use this life cycle method
static getDerivedStateFromProps(prevProps, prevState) {
if(prevProps.iconGroups !== this.props.iconGroups) {
let images = this.props.iconGroups.map(icon => icon.images);
let flatten = .concat.apply(, images).map(img => { return {name: img, icon: CONFIG.ICON_URL+img+'.png'} })
this.setState({ filteredItems: flatten, dataSource: flatten, accordianData: this.props.iconGroups });
}
}
getDerivedStateFromProps
is invoked right before calling the render method, both on the initial mount and on subsequent updates. It should return an object to update the state, or null to update nothing.
Read more about this lifecycle method here
Use this life cycle method
static getDerivedStateFromProps(prevProps, prevState) {
if(prevProps.iconGroups !== this.props.iconGroups) {
let images = this.props.iconGroups.map(icon => icon.images);
let flatten = .concat.apply(, images).map(img => { return {name: img, icon: CONFIG.ICON_URL+img+'.png'} })
this.setState({ filteredItems: flatten, dataSource: flatten, accordianData: this.props.iconGroups });
}
}
getDerivedStateFromProps
is invoked right before calling the render method, both on the initial mount and on subsequent updates. It should return an object to update the state, or null to update nothing.
Read more about this lifecycle method here
answered Nov 22 at 13:57
Raaj Nadar
1,07021020
1,07021020
add a comment |
add a comment |
up vote
0
down vote
I have fixed this issue. Actually my concepts were not right. I thought props are first received in constructor and componentWillMount. But I get all props in render() and everything works fine i dont have to use any lifecycle method to use props now
add a comment |
up vote
0
down vote
I have fixed this issue. Actually my concepts were not right. I thought props are first received in constructor and componentWillMount. But I get all props in render() and everything works fine i dont have to use any lifecycle method to use props now
add a comment |
up vote
0
down vote
up vote
0
down vote
I have fixed this issue. Actually my concepts were not right. I thought props are first received in constructor and componentWillMount. But I get all props in render() and everything works fine i dont have to use any lifecycle method to use props now
I have fixed this issue. Actually my concepts were not right. I thought props are first received in constructor and componentWillMount. But I get all props in render() and everything works fine i dont have to use any lifecycle method to use props now
answered Nov 24 at 10:17
Danial
1079
1079
add a comment |
add a comment |
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Use this
getDerivedStateFromProps
life cycle method– Raaj Nadar
Nov 22 at 12:02
did my solution work??
– Raaj Nadar
Nov 23 at 8:06
@RaajNadar I had the same issue after using your suggested lifecycle method.
– Danial
Nov 23 at 9:05
I have fixed this issue. Actually my concepts were not right. I think props are received only in render method. but not in lifecycle method. because when i call a method from render then it has all the props but when i get props in lifecycle method it does not have all props at the same time.
– Danial
Nov 23 at 9:08
Default props should fix the issue, because it will be loaded before the render method.
– Raaj Nadar
Nov 23 at 9:19