I'm using mockapi.io to practice with Axios API call
After I make a POST request, which create a new data, I want to render FlatList with the updated data. I'm thinking of making a new GET request to do that, but I'm not succeeded with it.
I need help
Here is where I call GET request, which already have mock data, and use FlatList to view it
ListScreen.js
class ListScreen extends Component {
constructor(props) {
super(props);
this.state = {
data: [],
}
}
componentDidMount() {
axios.get('insert url')
.then(res => {
this.setState({
data: res && res.data ? res.data : []
})
})
.catch(err => {
console.log('Run into problem')
})
}
render() {
const { data } = this.state;
return (
<View>
<FlatList
data={data}
renderItem={({ item }) => {
return (
<Item
name={item.lastName}
phone={item.phoneNumber}
/>
);
}}
keyExtractor={(item) => item.id}
/>
</View>
And here is where I call POST request
class Create extends Component {
handleSubmitData = (value) => {
console.log('check value: ', value)
axios.post('insert url', {
lastName: `${value.Name}`,
phoneNumber: `${value.Phone}`,
})
.then((response) => {
console.log('here is what you upload: ', response.data)
})
.catch((err) => {
console.log('Run into problem')
})
}
render() {
return (
<CreateForm
handleSubmitData={this.handleSubmitData}
/>
)
}
}
The CreateForm component looks something like this
class CreateForm extends Component {
render() {
const { handleSubmit } = this.props;
return (
<View>
<View>
<Field
name="Name"
component={}
/>
<Field
name="Phone"
component={}
/>
</View>
<View>
<Button
title='Save'
onPress={handleSubmit(this.props.handleSubmitData)}
/>
</View>
</View>
)
This can be done by lifting the state up, from ListScreen to ListScreen's parent.
In ListScreen, take out the state and move into its parent:
this.state = {
data: [],
}
Pass the state down to ListScreen as a prop, also pass the fetch function (see below):
<ListScreen data={this.state.data} fetchListData={this.fetchListData} />
Change ListScreen's render function to access the data from props:
const { data } = this.props;
Move the axios.get() out of ListScreen and into a method on the parent component.
class App extends Component {
fetchListData() {
axios.get('insert url')
.then(res => {
this.setState({
data: res && res.data ? res.data : []
})
})
.catch(err => {
console.log('Run into problem')
})
}
}
In ListScreen, call the function in componentDidMount:
componentDidMount() {
this.props.fetchListData();
}
Alternatively, you could call it in the parent component's
componentDidMount(). This might be preferred if you render multiple ListScreen's for example.
Finally, in the Create component, pass the fetch function:
<Create fetchListData={this.fetchListData} />
Call it on successful creation:
.then((response) => {
this.props.fetchListData();
console.log('here is what you upload: ', response.data)
})
As I see in your code, when you are making a POST request it wont display an updated data to your screen because there is no GET request callback upon the success result.
Suggesting you are not using redux , in ListScreen.js you could wrap the GET request into a function and call it in componentDidMount(). It should be look like:
const getData () => {
axios.get('insert url')
.then(res => {
this.setState({
data: res && res.data ? res.data : []
})
})
.catch(err => {
console.log('Run into problem')
})
}
componentDidMount() {
this.getData()
}
Therefore, you need to pass or drill the GET request function into your child component as a props and use it in a POST request callback. The final POST request method should be look like:
handleSubmitData = (value) => {
console.log('check value: ', value)
axios.post('insert url', {
lastName: `${value.Name}`,
phoneNumber: `${value.Phone}`,
})
.then((response) => {
console.log('here is what you upload: ', response.data)
getData()
})
.catch((err) => {
console.log('Run into problem')
})
}
As you can see, after your POST request is finished, it will trigger a GET request to update your parent state, resulting a screen with an updated data. However, you have to make sure to pass your parameters correctly based on how your component structure is.