SignalR Service
Documentation
This demo shows how two users can edit data in the Scheduler simultaneously. A SignalR service is used to broadcast push notifications.
Each Scheduler has an individual store to emulate the situation when Schedulers are being edited on two different clients. Changes made in one Scheduler are repeated in the other and persist until the browser session has expired.
Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
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import React from 'react';
import Scheduler from 'devextreme-react/scheduler';
import * as AspNetData from 'devextreme-aspnet-data-nojquery';
import { HubConnectionBuilder, HttpTransportType } from '@aspnet/signalr';
const BASE_PATH = 'https://js.devexpress.com/Demos/NetCore/';
const url = `${BASE_PATH}api/SchedulerSignalR`;
function createStore() {
return AspNetData.createStore({
key: 'AppointmentId',
loadUrl: url,
insertUrl: url,
updateUrl: url,
deleteUrl: url,
onBeforeSend: function(method, ajaxOptions) {
ajaxOptions.xhrFields = { withCredentials: true };
}
});
}
const store1 = createStore();
const store2 = createStore();
const currentDate = new Date(2017, 4, 23);
const views = ['day', 'workWeek'];
var connection = new HubConnectionBuilder()
.withUrl(`${BASE_PATH}schedulerSignalRHub`, {
skipNegotiation: true,
transport: HttpTransportType.WebSockets
})
.build();
connection
.start()
.then(() => {
connection.on('update', (key, data) => {
store1.push([{ type: 'update', key: key, data: data }]);
store2.push([{ type: 'update', key: key, data: data }]);
});
connection.on('insert', (data) => {
store1.push([{ type: 'insert', data: data }]);
store2.push([{ type: 'insert', data: data }]);
});
connection.on('remove', (key) => {
store1.push([{ type: 'remove', key: key }]);
store2.push([{ type: 'remove', key: key }]);
});
});
class App extends React.Component {
render() {
return (
<div className="schedulers">
<div className="column-1">
<Scheduler
dataSource={store1}
views={views}
defaultCurrentView="day"
defaultCurrentDate={currentDate}
height={600}
startDayHour={9}
endDayHour={19}
textExpr= "Text"
startDateExpr="StartDate"
descriptionExpr="Description"
endDateExpr="EndDate"
allDayExpr="AllDay" />
</div>
<div className="column-2">
<Scheduler
dataSource={store2}
views={views}
defaultCurrentView="day"
defaultCurrentDate={currentDate}
height={600}
startDayHour={9}
endDayHour={19}
textExpr= "Text"
startDateExpr="StartDate"
endDateExpr="EndDate"
allDayExpr="AllDay" />
</div>
</div>
);
}
}
export default App;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(
<App />,
document.getElementById('app')
);
<!DOCTYPE html>
<html>
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.4/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/19.2.4/css/dx.light.css" />
<script src="js/signalr/signalr-session-id.js"></script>
<script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script type="text/javascript" src="config.js"></script>
<link rel="stylesheet" type="text/css" href="styles.css" />
<script type="text/javascript">
System.import('./index.js');
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
</body>
</html>
.schedulers {
display: flex;
}
.column-1 {
padding-right: 5px;
}
.column-2 {
padding-left: 5px;
}
.dx-scheduler-small .dx-scheduler-view-switcher.dx-tabs {
display: table;
}
System.config({
transpiler: 'plugin-babel',
paths: {
'npm:': 'https://unpkg.com/'
},
defaultExtension: 'js',
map: {
'react': 'npm:react@16/umd/react.development.js',
'react-dom': 'npm:react-dom@16/umd/react-dom.development.js',
'prop-types': 'npm:prop-types/prop-types.js',
'devextreme': 'npm:devextreme@19.2',
'devextreme-react': 'npm:devextreme-react@19.2',
'devextreme-aspnet-data-nojquery': 'npm:devextreme-aspnet-data-nojquery@2.5.1',
'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js',
'quill': 'npm:quill@1.3.7/dist/quill.js',
'devexpress-diagram': 'npm:devexpress-diagram',
'devexpress-gantt': 'npm:devexpress-gantt',
// SystemJS plugins
'plugin-babel': 'npm:systemjs-plugin-babel@0/plugin-babel.js',
'systemjs-babel-build':
'npm:systemjs-plugin-babel@0/systemjs-babel-browser.js',
'tslib': 'npm:tslib@1.6.1',
'@aspnet/signalr': 'npm:@aspnet/signalr@1.0.0/dist/cjs/index.js'
},
meta: {
'devextreme-aspnet-data-nojquery': {
'esModule': true
}
},
packages: {
'devextreme': {
defaultExtension: 'js'
},
'devextreme-react': {
main: 'index.js'
}
},
babelOptions: {
sourceMaps: false,
stage0: true,
react: true
}
});