我正在使用React和Redux進行電話列表,並且遇到問題。 應該預料到的是:用戶將他的數據放在模態表單中,當他點擊Submit按鈕時 - onClick函數觸發器和數據分派到Redux存儲區,然後從存儲區轉到localStorage,在那裏存儲所有數據。React + Redux不更新商店
問題:不是創建一個包含存儲數據的對象的數組,而是創建了空數組。在下一次點擊提交按鈕後 - 第一次點擊放入數據而不是空數組。繼續下去。
與普通React setState有相同的問題。
代碼:
應用:
import React from "react";
import { Input } from "../components/Input";
import { Table } from "../components/Table";
import { ButtonAdd } from "../components/ButtonAdd";
import { connect } from "react-redux";
import { setInput, setUser, setFormModalStatus, setSuccessModalStatus} from
"../actions/dataActions";
class App extends React.Component {
constructor(props) {
super(props);
this.handleSubmit = this.handleSubmit.bind(this);
this.openFormModal = this.openFormModal.bind(this);
this.closeFormModal = this.closeFormModal.bind(this);
this.openSuccessModal = this.openSuccessModal.bind(this);
this.closeSuccessModal = this.closeSuccessModal.bind(this);
}
openFormModal() {
this.props.setFormModalStatus(true);
}
closeFormModal() {
this.props.setFormModalStatus(false);
}
openSuccessModal() {
this.props.setSuccessModalStatus(true);
}
closeSuccessModal() {
this.props.setSuccessModalStatus(false);
}
handleSubmit(e) {
this.closeFormModal();
this.openSuccessModal(); //this is for modals
const datas = this.props.form.input.values //{name: 'Rick', tel: 12345}
this.props.setUser(datas); //making dispatch with data
console.log(this.props.data.users); // [] - the issue
const testData = {name: Josh, tel: 54321};
this.props.setUser(testData);
console.log(this.props.data.users); //[{name: 'Rick, tel: 12345}]
e.preventDefault();
this.props.form.input.values = '';
}
render() {
return (
<div className="container">
<div className="row">
<div className="col-xs-12 col-md-10 col-md-offset-1">
<div className="box">
<Input input={this.props.input}/>
<ButtonAdd
formModalStatus=
{this.props.data.formModalStatus}
successModalStatus=
{this.props.data.successModalStatus}
openFormModal={this.openFormModal}
closeFormModal={this.closeFormModal}
closeSuccessModal={this.closeSuccessModal}
handleSubmit={this.handleSubmit}
/>
</div>
<Table />
</div>
</div>
</div>
);
}
}
const mapStateToProps = (state) => {
return {
data: state.data,
form: state.form
};
};
const mapDispatchToProps = (dispatch) => {
return {
setInput: (input) => {
dispatch(setInput(input));
},
setUser: (user) => {
dispatch(setUser(user));
},
setFormModalStatus: (boolean) => {
dispatch(setFormModalStatus(boolean));
},
setSuccessModalStatus: (boolean) => {
dispatch(setSuccessModalStatus(boolean));
}
};
};
export default connect(mapStateToProps, mapDispatchToProps)(App);
減速機:
const dataReducer = (state = {
input: "",
users: [],
formModalStatus: false,
successModalStatus: false
}, action) => {
switch (action.type) {
case "SET_INPUT":
state = {
...state,
input: action.payload
};
break;
case "SET_USER":
state = {
...state,
users: [...state.users, action.payload]
};
break;
case "SET_FORM_MODAL_STATUS":
state = {
...state,
formModalStatus: action.payload
}
case "SET_SUCCESS_MODAL_STATUS":
state = {
...state,
successModalStatus: action.payload
}
}
return state;
};
export default dataReducer;
Appropriane行動:
export function setUser(user) {
return {
type: "SET_USER",
payload: user
};
}
感謝您的回答。 當我嘗試你的變體 - 控制檯@ state.set中的錯誤不是一個函數。 我已經嘗試了許多減速器不可變回報的變體,現在它就像珍娜拉賈尼在這裏寫下的那樣。 可能會嘗試在Webpackbin上提供一個工作示例,但這需要一定的時間。 PS:我試過只使用React狀態,但是遇到了React setState()這個問題,然後在React + Redux中重寫了所有內容,並且問題消失了。然後我不喜歡自舉模態,並使用React模態並面對最初的問題。 –