我将redux添加到我的项目中进行状态管理,在添加reducer之前一切都很好
我认为每个中间件功能的下一步(操作)都会导致问题,但我不知道如何修复它。
我使用的是React 17.0.2,React redux 7.2.3,redux 4.1.2。
动作--
export const GET_CUSTOMERS = '[data] fetch customers';
export const GET_CLIENTS = '[data] fetch clients';
export const GET_USERS = '[data] fetch users';
export const GET_LPS = '[data] fetch LPS';
export const GET_METIS = '[data] fetch metis';
export const GET_CYBERCURE = '[data] fetch cybercure';
export const GET_SIMON = '[data] fetch simon';
export const GET_REPORTS = '[data] fetch reports';
export const CLIENTS_SUCCESS = '[data] fetch clients success';
export const CLIENTS_ERROR = '[data] fetch clients error';
export const USERS_SUCCESS = '[data] fetch users success';
export const USERS_ERROR = '[data] fetch users error';
export const LPS_SUCCESS = '[data] fetch lps success';
export const LPS_ERROR = '[data] fetch lps error';
export const METIS_SUCCESS = '[data] fetch metis success';
export const METIS_ERROR = '[data] fetch metis error';
export const CYBERCURE_SUCCESS = '[data] fetch cybercure success';
export const CYBERCURE_ERROR = '[data] fetch cybercure error';
export const SIMON_SUCCESS = '[data] fetch simon success';
export const SIMON_ERROR = '[data] fetch simon error';
export const REPORTS_SUCCESS = '[data] fetch reports success';
export const REPORTS_ERROR = '[data] fetch reports error';
export const UPDATE_CLIENTS = '[data] updating clients state';
export const UPDATE_USERS = '[data] updating users state';
export const UPDATE_LPS = '[data] updating lps state';
export const UPDATE_METIS = '[data] updating metis state';
export const UPDATE_CYBERCURE = '[data] updating cybercure state';
export const UPDATE_SIMON = '[data] updating simon state';
export const UPDATE_REPORTS = '[data] updating reports state';
export const getCustomers = (role) => ({
type: GET_CUSTOMERS,
payload: role
});
export const getClients = () => ({
type: GET_CLIENTS
});
export const getUsers = () => ({
type: GET_USERS
});
export const getLps = () => ({
type: GET_LPS
});
export const getMetis = () => ({
type: GET_METIS
});
export const getCybercure = () => ({
type: GET_CYBERCURE
});
export const getSimon = () => ({
type: GET_SIMON
});
export const getReports = () => ({
type: GET_REPORTS
});
export const updateClients = (data) => ({
type: UPDATE_CLIENTS,
payload: data
});
export const updateUsers = (data) => ({
type: UPDATE_USERS,
payload: data
});
export const updateLps = (data) => ({
type: UPDATE_LPS,
payload: data
});
export const updateMetis = (data) => ({
type: UPDATE_METIS,
payload: data
});
export const updateCybercure = (data) => ({
type: UPDATE_CYBERCURE,
payload: data
});
export const updateSimon = (data) => ({
type: UPDATE_SIMON,
payload: data
});
export const updateReports = (data) => ({
type: UPDATE_REPORTS,
payload: data
});
中间件--
import Swal from "sweetalert2";
import { apiRequest } from "../actions/api";
import { CLIENTS_ERROR, CLIENTS_SUCCESS, ... } from "../actions/data";
import { endLoading, onLoading } from "../actions/ui";
export const dataFlow = ({dispatch}) => (next) => (action) => {
next(action);
const role = action.payload;
let url = `${process.env.REACT_APP_HOST_URL}/pax/`;
const fd = new FormData();
fd.append("type", "show");
dispatch(onLoading());
switch(action.type){
case GET_CLIENTS:
dispatch(apiRequest("POST", `${url}clients`, fd, CLIENTS_SUCCESS, CLIENTS_ERROR));
return dispatch(endLoading());
case GET_USERS:
dispatch(apiRequest("POST", `${url}users`, fd, USERS_SUCCESS, USERS_ERROR));
return dispatch(endLoading());
case GET_LPS:
dispatch(apiRequest("POST", `${url}lps`, fd, LPS_SUCCESS, LPS_ERROR));
return dispatch(endLoading());
case GET_METIS:
dispatch(apiRequest("POST", `${url}metis`, fd, METIS_SUCCESS, METIS_ERROR));
return dispatch(endLoading());
case GET_CYBERCURE:
dispatch(apiRequest("POST", `${url}cybercure`, fd, CYBERCURE_SUCCESS, CYBERCURE_ERROR));
return dispatch(endLoading());
case GET_REPORTS:
dispatch(apiRequest("POST", `${url}reports`, fd, REPORTS_SUCCESS, REPORTS_ERROR));
return dispatch(endLoading());
default: return;
}
}
export const dataProcess = ({dispatch}) => (next) => (action) => {
next(action);
switch(action.type){
case CLIENTS_SUCCESS:
return dispatch(updateClients(action.payload));
case USERS_SUCCESS:
return dispatch(updateUsers(action.payload));
case LPS_SUCCESS:
return dispatch(updateLps(action.payload));
case METIS_SUCCESS:
return dispatch(updateMetis(action.payload));
case CYBERCURE_SUCCESS:
return dispatch(updateCybercure(action.payload));
case SIMON_SUCCESS:
return dispatch(updateSimon(action.payload));
case REPORTS_SUCCESS:
return dispatch(updateReports(action.payload));
case CLIENTS_ERROR:
return Swal.fire("Error!", action.payload, "error");
case USERS_ERROR:
return Swal.fire("Error!", action.payload, "error");
case LPS_ERROR:
return Swal.fire("Error!", action.payload, "error");
case METIS_ERROR:
return Swal.fire("Error!", action.payload, "error");
case CYBERCURE_ERROR:
return Swal.fire("Error!", action.payload, "error");
case SIMON_ERROR:
return Swal.fire("Error!", action.payload, "error");
case REPORTS_ERROR:
return Swal.fire("Error!", action.payload, "error");
default: return;
}
}
export const dataMdl = [dataFlow, dataProcess];
中间件--
export const api =
({ dispatch }) =>
(next) =>
async (action) => {
next(action);
if(action.type === API_REQUEST){
const { url, method, onSuccess, onError } = action.meta;
try{
const response = await fetch(url, {
method,
...action.payload,
});
const data = await response.json();
return dispatch({ type: onSuccess, payload: data });
}catch(error){
return dispatch({ type: onError, payload: error });
}
}
};
减速机 --
const initState = {
clients: null,
users: null,
lps: null,
metis: null,
cybercureusers: null,
reports: null
};
export const dataReducer = (state = initState, action) => {
switch(action.type) {
case UPDATE_CLIENTS:
return {...state,clients: action.payload};
case UPDATE_USERS:
return {...state, users: action.payload};
case UPDATE_LPS:
return {...state, lps: action.payload};
case UPDATE_METIS:
return {...state, metis: action.payload};
case UPDATE_CYBERCURE:
return {...state, cybercureusers: action.payload};
case UPDATE_REPORTS:
return {...state, reports: action.payload};
default: return state;
}
}
商店.js:
const composeEnhancers = composeWithDevTools({
trace: true,
traceLimit: 25,
})
export const store = createStore(
reducers, composeEnhancers(
applyMiddleware(...authMdl, ...rolesMdl, ...dataMdl, api, thunk)
));
发现问题了:)
关于中间件——
switch(action.type){
case GET_CLIENTS:
dispatch(apiRequest("POST", `${url}clients`, fd, CLIENTS_SUCCESS, CLIENTS_ERROR));
return dispatch(onLoading());
case GET_USERS:
dispatch(apiRequest("POST", `${url}users`, fd, USERS_SUCCESS, USERS_ERROR));
return dispatch(onLoading());
case GET_LPS:
dispatch(apiRequest("POST", `${url}lps`, fd, LPS_SUCCESS, LPS_ERROR));
return dispatch(onLoading());
case GET_METIS:
dispatch(apiRequest("POST", `${url}metis`, fd, METIS_SUCCESS, METIS_ERROR));
return dispatch(onLoading());
case GET_CYBERCURE:
dispatch(apiRequest("POST", `${url}cybercure`, fd, CYBERCURE_SUCCESS, CYBERCURE_ERROR));
return dispatch(onLoading());
case GET_REPORTS:
dispatch(apiRequest("POST", `${url}reports`, fd, REPORTS_SUCCESS, REPORTS_ERROR));
return dispatch(onLoading());
default: return;
}
当我为图表(react-chartjs-2)获取数据时,我收到了这个错误。我实现了try/catch块,但不知道如何删除这个错误。在Edge浏览器上,我得到了CRIPT28:SCRIPT28:堆栈空间不足 这是我在组件中调用的操作。 这是连接到redux存储的组件。它在我看来一切都很好。
问题内容: 我想这意味着有一个循环引用,但是对于我的一生,我无法猜测如何解决它。 有人有主意吗? http://plnkr.co/edit/aNcBcU?p=预览 检查Chrome中的调试控制台(例如),您将看到错误。冒犯的行是 通过以下方式在控制器上对scope.map进行“ $ watched” 问题答案: 这是因为您要比较对象是否相等,而不是参考。将您的声明更改为此:
这是我在React中的第一个应用程序。在localhost中,一切正常,当我使用Github Pages部署时,我的应用程序(Info/Images/evenements)中的一些页面无法呈现。每次单击他们的链接访问他们时,我都会在控制台上看到一个白色页面和此错误: range error:object . tostring处超出了最大调用堆栈大小 同样,当我刷新页面时,github pages返
问题内容: 我试图将文档批量插入MongoDB中(因此绕过Mongoose并使用本机驱动程序,因为Mongoose不支持批量插入文档数组)。我这样做的原因是为了提高写作速度。 我在以下代码中的console.log(err)处收到错误“ RangeError:超出最大调用堆栈大小”: 也许与Mongoose返回的响应数组的格式有关,这意味着我不能直接使用MongoDB进行本机插入吗?我已经在每个响
React.js用props给后代组件发值错了? 我编写了前面的演示来测试使用向后代组件发送信息。但它导致了错误: 未捕获的范围错误:对象超过了最大调用堆栈大小。克隆元素 但是我在演示运行良好后才写,所以你能告诉我是什么原因导致错误吗?
如果我逃跑 在铬33上,我得到 为什么?