How to get data (of my api json) in my object ( Redux, React )? - json

Question

I not undestand everything with javascript etc, I want to get my data returned by ma action redux but i'have a problem with my code.
const mapStateToProps = state => {
const group = state.groupReducer.group ? state.groupReducer.group : [ ]
return {
group
}
how i can get my data ?
When I try with that:
const mapStateToProps = state => {
const group = state.groupReducer.group.data.data[0] ? state.groupReducer.group.data.data[0] : [ ]
return {
group
}
And my goal is map around group
renderGroup = group => {
return group.map((groups => {
<div key={groups.data.data.id}>
//
</div>
}))
}
Sagas.js
export function* loadApiDataGroup() {
try {
// API
const response = yield
call(axios.get,'http://localhost:8000/api/group');
yield put(loadGroup(response))
} catch (e) {
console.log('REQUEST FAILED! Could not get group.')
console.log(e)
}
}
Action.js
export function loadGroup(data){ return { type: LOAD_GROUP, data }};
export function creatGroup(data){ return { type: CREATE_GROUP, data}};
// reducer
export default function groupReducer( state= {}, action = {}){
switch (action.type){
case LOAD_GROUP:
return {
...state,
group: action.data
}
case CREATE_GROUP:
return {
...state
}
default:
return state
}
thank you to help me

Answer 1

Try
const mapStateToProps = state => ({
group: state.groupReducer.group || []
});
Then you can use this.props.group in the component. Even though you might only want one thing in mapStateToProps, it's usually not directly returned like that.
If group is the response of an API request, you need to unpack data first, this is done in your async action creator (you will want to use redux-thunk or something similar):
const getGroup = () => async (dispatch) => {
dispatch({ type: 'GET_GROUP_REQUEST' });
try {
const { data } = await axios.get('/some/url');
dispatch({ type: 'GET_GROUP_SUCCESS', payload: data });
} catch (error) {
dispatch({ type: 'GET_GROUP_FAILURE', payload: error });
}
};