Redux 中的 Action 应该是唯一的吗? [英] Should Actions in Redux always be unique?

问题描述

在此示例中，我使用名为 ADD_TODO

In this example I'm using an action named ADD_TODO

import { createStore, combineReducers } from 'redux';

function todos(state, action) {
    state = state || [];
    switch (action.type) {
        case 'ADD_TODO':
            return state.concat([ action.text ]);
        default:
            return state;
    }
}

function counter(state, action){
    state = state || 0;
    switch (action.type){
        case 'INCREMENT':
            return state+1;
        case 'DECREMENT':
            return state-1;
        case 'ADD_TODO':
            return state+100;
        default:
            return state;
    }
}

var app = combineReducers({
    todos: todos,
    counter: counter
});

var store = createStore(app);
store.dispatch({ type: 'ADD_TODO': text: 'buy eggs' });

这会导致 "todos" 和 "counter" 减速器触发.除非我真的打算这样做，否则我应该让所有减速器都具有独特的作用吗?

This cause both the "todos" and "counter" reducers to trigger. Should I make all reducers have unique actions unless I actually intended it?

我们如何用多个几乎做同样事情的减速器来实现这一点?例如，多个计数器可以有INCREMENT"和DECREMENT"动作.

How can we implement this with multiple reducers that almost do the same thing? Multiple counters for example can have "INCREMENT" and a "DECREMENT" actions.

名称间距操作应该解决它吗?

Should name spacing actions solve it?

例如:POINT_INCREMENT"、POINT_DECREMENT".

eg: "POINT_INCREMENT", "POINT_DECREMENT".

推荐答案

让不同的 reducer 响应同一个动作并没有本质上的错误——例如，如果你一次刷新整个状态.但是，是的，如果您有两个对应于不同事物的计数器，您可能想提出一个命名方案来区分.但我认为动作名称可能应该有一些名词来表明它们适用于什么.

There's nothing inherently wrong with having different reducers respond to the same action -- for example, if you refresh the entire state at once. But yeah, if you have two counters that correspond to different things, you probably want to come up with a naming scheme to differentiate. But I would think the action names probably should have some noun to indicate what they apply to.

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