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Demo-CRUD: 4. ListStudent with Redux-Toolkit

Author: admin - Posted: 29/06/21 - Update: 29/06/21

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>ReactJS</title>
    <style>
        table {
            border-collapse: collapse;
        }

        th,
        td {
            padding: 0 0.5rem;
            border: 1px solid black;
        }
    </style>
</head>

<body>
    <div id="root"></div>
    <script crossorigin src="https://unpkg.com/react@17/umd/react.development.js"></script>
    <script crossorigin src="https://unpkg.com/react-dom@17/umd/react-dom.development.js"></script>
    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/redux/4.1.0/redux.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react-redux/7.2.4/react-redux.js"></script>

    <script src="https://cdn.jsdelivr.net/npm/@reduxjs/toolkit@1.6.0/dist/redux-toolkit.umd.min.js"></script>
    <!-- =========== src/utils.js =========== -->
    <script>
        class Uuid {
            s4() {
                return Math.floor((1 + Math.random()) * 0x10000)
                    .toString(16)
                    .substring(1);
            }
            s16() {
                return this.s4() + this.s4() + this.s4() + this.s4();
            }
        }
        let uuid = new Uuid();
    </script>

    <!-- =========== slices/listStudent_slice.js =========== -->
    <script>
        //Dùng RTK.createSlice khai báo tất cả State, Reducers và Actions luôn
        let listStudent_local = JSON.parse(localStorage.getItem('listStudent')) || { data: [], loading: false };
        const listStudent_slice = RTK.createSlice({
            name: 'listStudent',
            initialState: listStudent_local,
            reducers: {
                action_saveStudent(state, action) {
                    if (!action.payload.id) {
                        let new_student = {
                            id: uuid.s16(),
                            username: action.payload.username,
                            email: action.payload.email,
                        };
                        state.data.push(new_student);

                    } else {
                        let find_student = state.data.find((item) => item.id == action.payload.id);
                        find_student.username = action.payload.username;
                        find_student.email = action.payload.email;
                    }
                    localStorage.setItem('listStudent', JSON.stringify(state));
                    return state;
                },
                action_deleteStudent(state, action) {
                    state.data = state.data.filter((item) => item.id != action.payload);
                    localStorage.setItem('listStudent', JSON.stringify(state));
                    return state;
                },
                action_setListStudent(state, action) {
                    state.data = action.payload.map(item => ({
                        username: item.username,
                        email: item.email,
                        id: item.id,
                    }))
                    state.loading = false;
                    localStorage.setItem('listStudent', JSON.stringify(state));
                    return state;
                },
                action_getListStudentsOnline(state, action) {
                    state.loading = true;
                    return state;
                }
            }
        });
        // export ra các actions, reducer tương ứng :D
        const { action_saveStudent, action_deleteStudent, action_setListStudent, action_getListStudentsOnline } = listStudent_slice.actions;
        const listStudent_reducer = listStudent_slice.reducer;
    </script>

    <!-- =========== src/api/studentAPI =========== -->
    <script type="text/babel">
        //API cần để riêng 1 file
        const getStudentsFake = (url) => async (dispatch) => {
            dispatch(action_getListStudentsOnline());
            let response = await fetch(url);
            let responseJSON = await response.json();
            dispatch(action_setListStudent(responseJSON));
        }
    </script>

    <!-- =========== src/store.js =========== -->
    <script type="text/babel">
        //Khai báo tất cả các Reducer trong store ở dưới đây
        //ReduxToolkit đã cài đặt sẵn middlewareThunk và Redux devtools extension rồi, ko cần cài đặt gì thêm nữa
        const store = RTK.configureStore({
            reducer: {
                listStudent: listStudent_reducer,
                //product: product_reducer,
            }
        })
    </script>

    <!-- =========== components/App.js =========== -->
    <script type="text/babel">
        function App(props) {
            //Sử dụng useSelector và useSelector của useDispatch sẽ tiện hơn rất nhiều so với phải dùng HOC
            const listStudent = ReactRedux.useSelector(state => state.listStudent);
            const dispatch = ReactRedux.useDispatch();
            const dispatch_saveStudent = (student) => dispatch(action_saveStudent(student));
            const dispatch_deleteStudent = (id) => dispatch(action_deleteStudent(id));
            const dispatch_getStudentsFake = (url) => dispatch(getStudentsFake(url));

            const [url_fakeStudent, setUrl_fakeStudent] = React.useState('https://jsonplaceholder.typicode.com/users')
            const [filterName, setFilterName] = React.useState('');
            const [student, setStudent] = React.useState({ username: '', email: '', id: '' });

            const updateState_student = (e) => {
                let newStudent = { ...student };
                newStudent[e.target.name] = e.target.value;
                setStudent(newStudent)
            };

            const onSaveStudent = (e) => {
                if (!student.username || !student.email) return;
                dispatch_saveStudent(student);
                setStudent({ username: '', email: '', id: '' });
            };

            return (
                <div>
                    <button onClick={() => { setStudent({ username: '', email: '', id: '' }) }}>New Student</button> <br />
                    <input type="text" placeholder="username" name="username"
                        value={student.username}
                        onChange={updateState_student}
                    /> <br />
                    <input
                        type="text" placeholder="email" name="email"
                        value={student.email}
                        onChange={updateState_student}
                    /> <br />
                    <button onClick={onSaveStudent}>
                        {student.id ? 'Update Student' : 'Add Student'}
                    </button> <br /> <br />
                    <input type="text" placeholder="Search ..." name="txtFilterName"
                        value={filterName}
                        onChange={(e) => { setFilterName(e.target.value) }}
                    />
                    <table>
                        <thead>
                            <tr>
                                <th>#</th>
                                <th>Username</th>
                                <th>Email</th>
                                <th>Action</th>
                            </tr>
                        </thead>
                        <tbody>
                            {
                                listStudent.data
                                    .filter((item) => item.username.includes(filterName))
                                    .map((item, index) => {
                                        return (
                                            <tr key={item.id}>
                                                <td>{index}</td>
                                                <td>{item.username}</td>
                                                <td>{item.email}</td>
                                                <td>
                                                    <button onClick={(e) => { setStudent({ ...item }) }}>Sửa</button>
                                                    <button onClick={(e) => { dispatch_deleteStudent(item.id) }}>Xóa</button>
                                                </td>
                                            </tr>
                                        );
                                    })
                            }
                        </tbody>
                    </table>
                    <select value={url_fakeStudent} onChange={(e) => { setUrl_fakeStudent(e.target.value) }}>
                        <option value="https://jsonplaceholder.typicode.com/users">https://jsonplaceholder.typicode.com/users</option>
                        <option value="https://fakestoreapi.com/users?limit=10">https://fakestoreapi.com/users?limit=10</option>
                    </select><br />
                    <button onClick={e => { dispatch_getStudentsFake(url_fakeStudent) }}>Get Student Fake</button> 
                    {listStudent.loading && <img src="https://vcdn-ione.vnecdn.net/2016/07/13/loading-256-0001-4566-1468383063.gif" width="14px" />}
                </div>
            );

        }
    </script>

    <!-- =========== src/index.js =========== -->
    <script type="text/babel">
        //Connect React và Redux bằng Provider, với store=store đã được khai báo ở trên
        const Provider = ReactRedux.Provider;
        ReactDOM.render(
            <Provider store={store}>
                <App />
            </Provider>,
            document.getElementById('root')
        );
    </script>
</body>

</html>

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<!DOCTYPE html>

<head>

<title>ReactJS</title>

<style>

table {

border-collapse: collapse;

}

th,

td {

padding: 0 0.5rem;

border: 1px solid black;

}

</style>

</head>

<body>

class Uuid {

s4() {

return Math.floor((1 + Math.random()) * 0x10000)

.toString(16)

.substring(1);

}

s16() {

return this.s4() + this.s4() + this.s4() + this.s4();

}

let uuid = new Uuid();

</script>

//Dùng RTK.createSlice khai báo tất cả State, Reducers và Actions luôn

let listStudent_local = JSON.parse(localStorage.getItem('listStudent')) || { data: [], loading: false };

const listStudent_slice = RTK.createSlice({

name: 'listStudent',

initialState: listStudent_local,

reducers: {

action_saveStudent(state, action) {

if (!action.payload.id) {

let new_student = {

id: uuid.s16(),

username: action.payload.username,

email: action.payload.email,

};

state.data.push(new_student);

} else {

let find_student = state.data.find((item) => item.id == action.payload.id);

find_student.username = action.payload.username;

find_student.email = action.payload.email;

}

localStorage.setItem('listStudent', JSON.stringify(state));

return state;

action_deleteStudent(state, action) {

state.data = state.data.filter((item) => item.id != action.payload);

localStorage.setItem('listStudent', JSON.stringify(state));

return state;

action_setListStudent(state, action) {

state.data = action.payload.map(item => ({

username: item.username,

email: item.email,

id: item.id,

}))

state.loading = false;

localStorage.setItem('listStudent', JSON.stringify(state));

return state;

action_getListStudentsOnline(state, action) {

state.loading = true;

return state;

}

});

// export ra các actions, reducer tương ứng :D

const { action_saveStudent, action_deleteStudent, action_setListStudent, action_getListStudentsOnline } = listStudent_slice.actions;

const listStudent_reducer = listStudent_slice.reducer;

</script>

//API cần để riêng 1 file

const getStudentsFake = (url) => async (dispatch) => {

dispatch(action_getListStudentsOnline());

let response = await fetch(url);

let responseJSON = await response.json();

dispatch(action_setListStudent(responseJSON));

}

</script>

//Khai báo tất cả các Reducer trong store ở dưới đây

//ReduxToolkit đã cài đặt sẵn middlewareThunk và Redux devtools extension rồi, ko cần cài đặt gì thêm nữa

const store = RTK.configureStore({

reducer: {

listStudent: listStudent_reducer,

//product: product_reducer,

}

})

</script>

function App(props) {

//Sử dụng useSelector và useSelector của useDispatch sẽ tiện hơn rất nhiều so với phải dùng HOC

const listStudent = ReactRedux.useSelector(state => state.listStudent);

const dispatch = ReactRedux.useDispatch();

const dispatch_saveStudent = (student) => dispatch(action_saveStudent(student));

const dispatch_deleteStudent = (id) => dispatch(action_deleteStudent(id));

const dispatch_getStudentsFake = (url) => dispatch(getStudentsFake(url));

const [url_fakeStudent, setUrl_fakeStudent] = React.useState('https://jsonplaceholder.typicode.com/users')

const [filterName, setFilterName] = React.useState('');

const [student, setStudent] = React.useState({ username: '', email: '', id: '' });

const updateState_student = (e) => {

let newStudent = { ...student };

newStudent[e.target.name] = e.target.value;

setStudent(newStudent)

};

const onSaveStudent = (e) => {

if (!student.username || !student.email) return;

dispatch_saveStudent(student);

setStudent({ username: '', email: '', id: '' });

};

return (

<div>

<button onClick={() => { setStudent({ username: '', email: '', id: '' }) }}>New Student</button> <br />

<input type="text" placeholder="username" name="username"

value={student.username}

onChange={updateState_student}

/> <br />

<input

type="text" placeholder="email" name="email"

value={student.email}

onChange={updateState_student}

/> <br />

{student.id ? 'Update Student' : 'Add Student'}

</button> <br /> <br />

<input type="text" placeholder="Search ..." name="txtFilterName"

value={filterName}

onChange={(e) => { setFilterName(e.target.value) }}

<table>

<thead>

<tr>

<th>Username</th>

<th>Email</th>

<th>Action</th>

</tr>

</thead>

<tbody>

{

listStudent.data

.filter((item) => item.username.includes(filterName))

.map((item, index) => {

return (

<td>{index}</td>

<td>{item.username}</td>

<td>{item.email}</td>

<td>

<button onClick={(e) => { setStudent({ ...item }) }}>Sửa</button>

<button onClick={(e) => { dispatch_deleteStudent(item.id) }}>Xóa</button>

</td>

</tr>

);

})

}

</tbody>

</table>

<select value={url_fakeStudent} onChange={(e) => { setUrl_fakeStudent(e.target.value) }}>

<option value="https://jsonplaceholder.typicode.com/users">https://jsonplaceholder.typicode.com/users</option>

<option value="https://fakestoreapi.com/users?limit=10">https://fakestoreapi.com/users?limit=10</option>

</select><br />

<button onClick={e => { dispatch_getStudentsFake(url_fakeStudent) }}>Get Student Fake</button>

{listStudent.loading && <img src="https://vcdn-ione.vnecdn.net/2016/07/13/loading-256-0001-4566-1468383063.gif" width="14px" />}

</div>

);

}

</script>

//Connect React và Redux bằng Provider, với store=store đã được khai báo ở trên

const Provider = ReactRedux.Provider;

ReactDOM.render(

<App />

</Provider>,

document.getElementById('root')

);

</script>

</body>

</html>

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