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.
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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<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/20.1.8/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.8/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.1.8/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@1.0.17',
'devexpress-gantt': 'npm:devexpress-gantt@1.0.10',
'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
}
});