Reactjs 如何将新值推送到存储对象？

在上述数据结构的情况下，如何在Redux中为水果添加新的猕猴桃

foodList : {
    'fruits' : ['apple', 'banana'],
    'hamburgers: ['bigmac', 'crispy']
}

如何将新值推送到存储对象？

这应该可以：

case "FRUIT_ADD_SUCCESS" : 

    action.payload = 'kiwi';
    return { 
        ...state,

        // Cannot read property 'push' of undefined 
        foodList: state.foodList['fruits'].push(action.payload)

        // Disappear previous values 
        foodList: state.foodList['fruits'] = action.payload  
    }

这应该起作用：

case "FRUIT_ADD_SUCCESS" : 

    action.payload = 'kiwi';
    return { 
        ...state,

        // Cannot read property 'push' of undefined 
        foodList: state.foodList['fruits'].push(action.payload)

        // Disappear previous values 
        foodList: state.foodList['fruits'] = action.payload  
    }