Javascript Redux:调用相同的api,但分派不同的操作
目前我有一个redux actions,它是Javascript Redux:调用相同的api,但分派不同的操作,javascript,reactjs,redux,Javascript,Reactjs,Redux,目前我有一个redux actions,它是getUsers(),用于获取所有用户 export function getUsers (params) { return async dispatch => { await dispatch({ type: 'GET_USERS_REQUEST' }); const urlParams = params ? new URLSearchParams(Object.entries(params)) :
getUsers()
,用于获取所有用户
export function getUsers (params) {
return async dispatch => {
await dispatch({ type: 'GET_USERS_REQUEST' });
const urlParams = params ? new URLSearchParams(Object.entries(params)) : null;
return axios({
method: 'get',
url: Environment.GET_USERS+ `?${urlParams}`,
headers: { 'Content-Type': 'application/json' },
}).then (async res => {
await dispatch({ type: 'GET_USERS_SUCCESS', allUsers: res.data.Data });
}).catch (err => {
dispatch({ type: 'GET_USERS_FAILURE', error: err.toString() });
});
}
}
现在我想使用相同的getUsers()
,但是使用参数id(例如getUsers({UserId:'jamesbond007'})
),
在这个动作中,我想分派({type:'GET\u USER\u BY\u ID\u SUCCESS',USER:res.data.data})
如何使用相同的api调用分派不同的操作?我是否应该复制相同的代码,但更改动作调度?如果这样做,它将变成重复功能。您可以通过参数id决定操作,如
// all users, paramId is null
// a user, paramId is xxxx
const action = paramId ?
{ type: 'GET_USER_BY_ID_SUCCESS', user: res.data.Data } :
{ type: 'GET_USERS_SUCCESS', allUsers: res.data.Data };
dispatch(action);
但是,我认为你的想法不好。最好用两种方法进行逻辑运算。它是可读的。我找到了这样做的方法。我声明变量
REQUEST、SUCCESS、FAILURE
,并检查param对象是否包含UserId
。如果是,它将通过_ID而不是获取用户
来调度获取用户
export function getUsers (params) {
let REQUEST, SUCCESS, FAILURE;
if (!_.isEmpty(params) && params.UserId) {
REQUEST = 'GET_USER_BY_ID_REQUEST';
SUCCESS = 'GET_USER_BY_ID_SUCCESS';
FAILURE = 'GET_USER_BY_ID_FAILURE';
} else {
REQUEST = 'GET_USERS_REQUEST';
SUCCESS = 'GET_USERS_SUCCESS';
FAILURE = 'GET_USERS_FAILURE';
}
return async dispatch => {
await dispatch({ type: REQUEST });
const urlParams = params ? new URLSearchParams(Object.entries(params)) : null;
return axios({
method: 'get',
url: Environment.GET_USERS+ `?${urlParams}`,
headers: { 'Content-Type': 'application/json' },
}).then (async res => {
await dispatch({ type: SUCCESS, payload: res.data.Data });
}).catch (err => {
dispatch({ type: FAILURE, error: err.toString() });
});
}
}
请注意,在我的减速器中,我只使用action.payload
。例如:
case 'GET_USERS_SUCCESS':
return { ...state, isFetching: false, userList: action.payload };
case 'GET_USER_BY_ID_SUCCESS':
return { ...state, isFetching: false, user: action.payload };