[英]Fetch data from server (REST API) and set data in a Multiple Select Picker in React Native
I am using REST API to fetch the data from server and I want to set that data in a multiple select picker in React Native but I am getting an error. 我正在使用REST API从服务器获取数据,我想在React Native中的多选选择器中设置该数据但我收到错误。 Here is my response from the server:
以下是我对服务器的回复:
[
{
"id": 22,
"name": "Business",
"slug": "business"
},
{
"id": 17,
"name": "Digital Marketing",
"slug": "digital-marketing"
},
{
"id": 23,
"name": "Fun & Lifestyle",
"slug": "fun-lifestyle"
},
{
"id": 16,
"name": "Mobiles",
"slug": "mobiles"
}]
I want to set the name in the drop down and select multiple value from it. 我想在下拉列表中设置名称并从中选择多个值。 Here is my code:
这是我的代码:
import React from 'react';
import { View, StyleSheet } from 'react-native';
import MultiSelect from 'react-native-multiple-select';
export default class PostJob extends React.Component {
state = {
LangPickerValueHolder: [],
LangKnown: []
}
componentDidMount () {
fetch('taxonomies/get_taxonomy?taxonomy=project_cat').then(response => response.json())
.then(responseJson => {
let langString = responseJson;
let LangPickerValueHolder = langString.map((name, id) => { return { name, id }; });
this.setState({
LangPickerValueHolder
});
console.log(langArray);
}).catch(error => {
console.error(error);
});
}
render () {
return (
<View style={styles.container}>
<MultiSelect
ref={(component) => { this.multiSelect = component; }}
onSelectedItemsChange={(value) =>
this.setState({ LangKnown: value })
}
uniqueKey="id"
items={this.state.langString}
selectedItems={this.state.LangKnown}
onChangeInput={ (text) => console.log(text)}
displayKey = 'name'
submitButtonText="Submit" />
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
backgroundColor: 'white',
padding: 8
}
});
But it is showing no item to display. 但它没有显示任何项目。
langString.map(item => ({ name: item.name, id: item.id }))
. langString.map(item => ({ name: item.name, id: item.id }))
。 items
prop should be this.state.LangPickerValueHolder
. items
prop应该是this.state.LangPickerValueHolder
。
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