I am trying to understand an error that I have and that I do not understand. I have this array:
Array [
Object {
"cost": 0,
"created_at": "2020-12-14T15:54:50Z",
"custom_fields": Object {
"_161_": "4137",
"_162_": "48",
"_163_": "10926",
"_164_": "0",
"_165_": "FLY",
"_166_": "2020-12-14T14:54:37.737Z",
"_167_": "2020-12-31T14:54:37.737Z",
"_168_": "0",
"_171_": "0",
"_300_": "412:00",
"_301_": "45.725556|5.081111",
"_302_": "-27.7078990936|-67.0951004028",
"_303_": "Lyon Saint-Exupéry Airport",
"_304_": "Londres/Belén Airport",
"_310_": "60",
},
"description": "",
"family_id": 0,
"id": 1061,
"incl_tax": 0,
"is_visible": 1,
"name": "Lyon Saint-Exupéry Airport (14/12/2020 à 15:54) > Londres/Belén Airport (31/12/2020 à 15:54)",
"photo": "",
"quantity": 0,
"reference": "",
"stock_status": "1",
"tax_rate_id": 0,
"unit": "",
"updated_at": "2020-12-14T15:54:50Z",
"weight": 0,
},
Object {
"cost": 0,
"created_at": "2020-11-15T01:38:08Z",
"custom_fields": Object {
"_161_": "1373",
"_162_": "30",
"_163_": "4680",
"_164_": "0",
"_165_": "FLY",
"_166_": "2020-11-21T00:37:00.000Z",
"_167_": "2020-11-29T00:37:00.000Z",
"_168_": "0",
"_171_": "0",
"_300_": "190:00",
"_301_": "43.6539083949|-79.65785399079999",
"_302_": "-22.285699844399996|-62.7136993408",
"_303_": "Tarten Heliport",
"_304_": "Santa Victoria Airport",
"_310_": "-480",
},
"description": "",
"family_id": 0,
"id": 896,
"incl_tax": 0,
"is_visible": 1,
"name": "Tarten Heliport (2020-11-21 at 16:37) > Santa Victoria Airport (2020-11-29 at 16:37)",
"photo": "",
"quantity": 0,
"reference": "",
"stock_status": "1",
"tax_rate_id": 0,
"unit": "FLY",
"updated_at": "2020-11-15T01:38:08Z",
"weight": 0,
},
]
It's an array test with 2 products inside (flights) I'm trying to access the filenames, so "name", I don't understand at all why my call returns 'undefined' in console.log when I do
console.log(this.state.name)
I initialize my data in the initListData function, I update the state here so that the name gets the names from my array, I load this function from componentWillMount and then I call the names in my autocomplete.
can someone help me figure out what is wrong, and where i am making the mistake? I need constructed explanations please, there I have a real need for understanding. Thanks for any leads or help.
Full code :
import React, { Component } from "react";
import {
View,
Text,
StyleSheet,
Button
} from "react-native";
import styles from '../../../assets/styles';
import * as Permissions from "expo-permissions";
import { getProducts } from '../../../src/common/Preferences';
import { Camera } from 'expo-camera';
import i18n from '../../../src/i18n';
import shortid from "shortid";
import {Autocomplete} from "react-native-dropdown-autocomplete";
class Tickets extends Component {
constructor(props) {
super(props);
this.state = {
Press: false,
hasCameraPermission: null,
name: '',
lastScannedUrl:null,
eventSelected: false,
displayArray: []
};
}
initListData = async () => {
let list = await getProducts(1);
if (list) {
this.setState({
displayArray: list,
name: list.name
});
}
console.log('name dans initListData =', list.name)
};
async UNSAFE_componentWillMount() {
this.initListData();
console.log('name dans le state =', this.state.name)
};
componentDidMount() {
this.getPermissionsAsync();
}
getPermissionsAsync = async () => {
const { status } = await Permissions.askAsync(Permissions.CAMERA);
this.setState({ hasCameraPermission: status === "granted" });
};
handleBarCodeScanned = ({ type, data }) => {
this.setState({ Press: false, scanned: true, name: data });
this.props.navigation.navigate('ProductDetails', {name : parseInt(this.state.state.name)})
};
renderBarcodeReader = () => {
const { hasCameraPermission, scanned } = this.state;
if (hasCameraPermission === null) {
return <Text>{i18n.t("scan.request")}</Text>;
}
if (hasCameraPermission === false) {
return <Text>{i18n.t("scan.noaccess")}</Text>;
}
return (
<View
style={{
flex: 1,
...StyleSheet.absoluteFillObject
}}
>
<Camera
onBarCodeScanned={scanned ? undefined : this.handleBarCodeScanned}
barCodeScannerSettings={[Camera.Constants.Type.qr]}
style={{flex:1}}
/>
{scanned && (
<Button
title={"Tap to Scan Again"}
onPress={() => this.setState({ scanned: false })}
disabled={this.state.selectedItem===null}
/>
)}
</View>
);
}
handleSelectItem(item, index) {
const {onDropdownClose} = this.props;
onDropdownClose();
this.setState({eventSelected: true})
console.log(item);
}
render() {
const { hasCameraPermission, scanned, Press } = this.state;
let marker = null;
const {scrollToInput, onDropdownClose, onDropdownShow} = this.props;
//console.log('displayArray', this.state.displayArray, 'name', this.state.name)
return (
<View style={{flex:1}}>
<View style={{width: "100%", zIndex: 100}}>
<Autocomplete
key={shortid.generate()}
containerStyle={{margin: 0, padding: 0, borderBottomColor: 'transparent',}}
inputStyle={{ width: '80%', borderWidth: 1, backgroundColor: '#FFF', opacity: 0.9, borderColor: '#F78400'}}
placeholder={i18n.t("tickets.event")}
placeholderColor="#F78400"
pickerStyle={styles.autocompletePicker}
scrollStyle={styles.autocompleteScroll}
scrollToInput={ev => {}}
handleSelectItem={(item, id) => this.handleSelectItem(item, id)}
onDropdownClose={() => onDropdownClose()}
onDropdownShow={() => onDropdownShow()}
data={this.state.name}
minimumCharactersCount={2}
highlightText
valueExtractor={item => item.name}
rightContent
rightTextExtractor={item => item.properties}
/>
</View>
{this.state.eventSelected ? (
<View>
{this.renderBarcodeReader()}
</View>
) : (
<Text style={{ top: '50%', zIndex:100, color: 'red', fontStyle: 'italic', fontSize: 18}}>{i18n.t("tickets.warning")}</Text>
)}
</View>
);
}
}
export default Tickets;