reducers.js

import {RECEIVE_COURSES_DETAIL, ADD_COURSES_TO_CART} from './actions'

const initialState = {

}


export default function detailInfo(state = initialState, action) {
    switch (action.type) {
        case RECEIVE_COURSES_DETAIL:
            let courseInfo = action.payload
            return {
                ...state,
                ...courseInfo
            }
        case ADD_COURSES_TO_CART:
            const { course_info } = state;
            const obj = {
                course_info: Object.assign({}, course_info, {in_cart: true})
            };
            return Object.assign({}, state, obj);
        default:
            return state
    }
}