我的减速器被拆分，其中一个我的初始状态和减速器看起来像：
import Constants from '../constants';
const initialState = {
fetching: true,
};
const boards = (state = initialState, action) => {
switch (action.type) {
case Constants.BOARDS_FETCHING:
return state;
default:
return state;
}
};
export default boards;
如何在 BOARDS_FETCHING 情况下将 fetching 属性更改为 true？
更新
我的 .babelrc 看起来像：
{
"presets": ["react", "es2015"],
"env": {
"development": {
"presets": ["react-hmre"]
}
}
}
错误：
你需要安装 transform-object-rest-spread
"plugins": ["transform-object-rest-spread"]
您应该在case Constants.BOARDS_FETCHING子句中设置它：
import Constants from '../constants';
const initialState = {
fetching: true,
};
const boards = (state = initialState, action) => {
switch (action.type) {
case Constants.BOARDS_FETCHING:
return {...state, fetching: true};
default:
return state;
}
};
export default boards;
替换这个：
const boards = (state = initialState, action) => {
switch (action.type) {
case Constants.BOARDS_FETCHING:
return state;
default:
return state;
}
};
到：
const boards = (state = initialState, action) => {
switch (action.type) {
case Constants.BOARDS_FETCHING:
return Object.assign({},state,action.fetching);
default:
return state;
}
};