case foodConstants.FOOD_SUCCESS_POST: {

​

  let updatedItems = { ...state.items };

  const itemIndex = updatedItems.findIndex((food1) => food1.id === action.id);

​

  if(itemIndex > -1){

    updatedItems[itemIndex] = {

        ...updatedItems[itemIndex],

        ...action,

    }

  }

​

 return { ...state, items: updatedItems };

}

​

// (state, action) => newState

function todosReducer(todos = [], action = {}) {

  switch (action.type) {

    case 'ADD_TODO':

      return [...todos, action.payload];

    case 'DELETE_TODO':

      return todos.filter((todo) => todo.id !== action.payload.id);

    case 'DELETE_ALL_TODO':

      return [];

    case 'TOGGLE_TODO':

      return todos.map((todo) => {

        if (todo.id === action.payload.id) {

          return { ...todo, complete: !todo.complete };

        }

        return todo;

      });

    default:

      return todos;

  }

}

case foodConstants.FOOD_SUCCESS_POST: {

​

  const updatedItems = state.items.map((food1) => {

    if (food1.id === action.id) {

      return { ...action };

    }

​

    return food1;

  });

 return { ...state, items: updatedItems };

}

​

  if (action.type == types.FILTER_TITLE_CHANGED) {

    let newState = { ...state };

    newState.filterTitleStr = action.filterTitleStr;

    return newState;

  } else if (action.type == types.FILTER_AUTHOR_CHANGED) {

    let newState = { ...state };

    newState.filterAuthorStr = action.filterAuthorStr;

    return newState;

  } else if (action.type == types.FILTER_CATEGORY_CHANGED) {

    let newState = { ...state };

    newState.filterCategoryStr = action.filterCategoryStr;

    return newState;

  }