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File Uploader

Direct Upload to Azure

The FileUploader widget supports direct-upload to blob storages. This demo illustrates how to configure the uploadChunk option to upload a large file directly to Azure Blob Storage without using a user's web server. All APIs that implement access to Azure Blob Storage on the client are stored in the azure-file-system.js file.

To implement file upload logic, use the uploadChunk option to specify how to process a connection request to the storage.

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<template> <div id="wrapper" :class="wrapperClassName" > <DxLoadPanel :position="loadPanelPosition" :visible.sync="loadPanelVisible" /> <div id="widget-area"> <DxFileUploader id="file-uploader" :chunk-size="200000" :max-file-size="1048576" :upload-chunk="uploadChunk" /> <div id="request-panel"> <div class="request-info" v-for="(request, index) in requests" :key="index" > <div class="parameter-info"> <div class="parameter-name">Method:</div> <div class="parameter-value dx-theme-accent-as-text-color">{{ request.method }}</div> </div> <div class="parameter-info"> <div class="parameter-name">Url path:</div> <div class="parameter-value dx-theme-accent-as-text-color">{{ request.urlPath }}</div> </div> <div class="parameter-info"> <div class="parameter-name">Query string:</div> <div class="parameter-value dx-theme-accent-as-text-color">{{ request.queryString }}</div> </div> <br> </div> </div> </div> <div id="message-box"> To run the demo locally, specify your Azure storage account name, access key and container name in the web.config file. Refer to the <a href="https://js.devexpress.com/Demos/WidgetsGallery/Demo/FileUploader/AzureDirectUploading/Vue/Light/" target="_blank" > https://js.devexpress.com/Demos/WidgetsGallery/Demo/FileUploader/AzureDirectUploading/Vue/Light/ </a> to see the demo online. </div> </div> </template> <script> import { DxFileUploader } from 'devextreme-vue/file-uploader'; import { DxLoadPanel } from 'devextreme-vue/load-panel'; const endpointUrl = 'https://js.devexpress.com/Demos/Mvc/api/file-manager-azure-access'; export default { components: { DxFileUploader, DxLoadPanel }, data() { return { loadPanelPosition: { of: '#file-uploader' }, loadPanelVisible: true, wrapperClassName: '', requests: [] }; }, created() { const onRequestExecuted = ({ method, urlPath, queryString }) => { const request = { method, urlPath, queryString }; this.requests.unshift(request); }; gateway = new AzureGateway(endpointUrl, onRequestExecuted); fetch('https://js.devexpress.com/Demos/Mvc/api/file-manager-azure-status?widgetType=fileManager') .then(response => response.json()) .then(result => { this.wrapperClassName = result.active ? 'show-widget' : 'show-message'; this.loadPanelVisible = false; }); }, methods: { uploadChunk(file, uploadInfo) { let promise = null; if(uploadInfo.chunkIndex === 0) { promise = gateway.getUploadAccessUrl(file.name).done(accessUrl => { uploadInfo.customData.accessUrl = accessUrl; }); } else { promise = Promise.resolve(); } promise = promise.then(() => gateway.putBlock(uploadInfo.customData.accessUrl, uploadInfo.chunkIndex, uploadInfo.chunkBlob)); if(uploadInfo.chunkIndex === uploadInfo.chunkCount - 1) { promise = promise.then(() => gateway.putBlockList(uploadInfo.customData.accessUrl, uploadInfo.chunkCount)); } return promise; } } }; let gateway = null; </script> <style> #widget-area { visibility: hidden; } #message-box { display: none; } .show-widget #widget-area { visibility: visible; } .show-message #widget-area { display: none; } .show-message #message-box { display: block; } #request-panel { min-width: 505px; height: 400px; overflow-x: hidden; overflow-y: auto; padding: 18px; margin-top: 40px; background-color: rgba(191, 191, 191, 0.15); } #request-panel .parameter-info { display: flex; } .request-info .parameter-name { flex: 0 0 100px; } .request-info .parameter-name, .request-info .parameter-value { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; } </style>
import Vue from 'vue'; import App from './App.vue'; new Vue({ el: '#app', components: { App }, template: '<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/20.1.7/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.7/css/dx.light.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.7/css/dx-gantt.css" /> <script src="js/azure-file-system.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> <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>
System.config({ transpiler: 'plugin-babel', meta: { '*.vue': { loader: 'vue-loader' }, }, paths: { 'npm:': 'https://unpkg.com/' }, map: { 'vue': 'npm:vue@2.6.3/dist/vue.esm.browser.js', 'vue-loader': 'npm:dx-systemjs-vue-browser@latest/index.js', 'devextreme': 'npm:devextreme@20.1', 'devextreme-vue': 'npm:devextreme-vue@20.1', 'jszip': 'npm:jszip@3.1.3/dist/jszip.min.js', 'quill': 'npm:quill@1.3.7/dist/quill.js', 'devexpress-diagram': 'npm:devexpress-diagram@1.0.14', 'devexpress-gantt': 'npm:devexpress-gantt@1.0.7', 'plugin-babel': 'npm:systemjs-plugin-babel@0/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0/systemjs-babel-browser.js' }, packages: { 'devextreme-vue': { main: 'index.js' }, 'devextreme': { defaultExtension: 'js' }, 'devextreme/events/utils': { main: 'index' }, 'devextreme/events': { main: 'index' }, }, babelOptions: { sourceMaps: false, stage0: true } });