Create the Multi-File Upload Component 3. We will walk through a complete implementation of this backend in a moment, but this is what the basic usage of multer looks like. Getting our list of images and deleting an image isnt very spectacular, but when we want to add a new image we first of all present an action sheet to select a source. ionic cordova run android You will see this default page when the app starts on an Android device. Remember from the first part: We created the API response exactly for this, so now the src for an image is just the URL to our API and we dont need any additional logic to convert any data! in a member variable in Angular or StencilJS, or with a useRef in React). Click on Get Image button the select Image file in the gallery or document folder then click the upload button. Jump straight to the example. an Ionic application) to a backend server (e.g. The storage is different from the Realtime database and the newer firebase Cloud Firestore. Create an Ionic Application. Install ng2-file-upload 2. In order to go through this tutorial make sure you have the API from the first part up and running: Ionic 5 Image Upload with NestJS & Capacitor: The API I'll give you exact details in the double opt-in email confirmation. It's free to sign up and bid on jobs. That's why we're using the native file transfer plugin. We are not uploading a base64 string, we are uploading a blob to the storage. I hope you liked this tutorial and share it with others. Keep in mind that you do specifically need to store the result of a change/submit event to get a reference to the File, attempting to get the current value of the form control when you need to use it (as you would with other standard fields) won't work, it will just return: Which is a security feature implemented by browsers to prevent the filesystem structure of the users machine being exposed through JavaScript. In this tutorial, we learned how to use the Cordova camera plugin to capture the image in an Ionic app. Next, we run the app on iOS simulator by typing this command. Whatever answers related to "on button click open file upload control ionic 5" ionic reload app; how to pass data to another page in ionic 3; File Upload Button and display file javascript; angular button open file input; ion-datetime open programmatically; ionic onfig.xml hide loader; onclick button how to import file upload using dialog . The default encoding type for a form is application/x-www-form-urlencoded but if we want to upload a file using the file input type then we need to set the enctype to multipart/form-data. Ionic Framework. It may look quite similar on the front end, as a file input looks more or less the same as any other HTML input: You might expect that you could just POST this data using a standard HTTP request to a server and retrieve the file in the same way that you would retrieve any other value from a form. Ionic File Upload is one of the essential features in mobile apps development. In order to go through this tutorial make sure you have the API from the first part up and running: Ionic 5 Image Upload with NestJS & Capacitor: The API. Just a quick note: If you deploy this app to a device you need to change the URL to your backend since your device wont be able to access the localhost URL we currently got. All three (StencilJS, React, and Angular) versions with multiple file uploads will be available in the associated source code for this blog post. www.positronx.io/ionic-firebase-file-image-upload-with-progress-bar-tutorial-with-example/. I also recommend to test your app with live reload on a device, the command for that looks like this: We have built a powerful API with image upload in the first part and now created our Ionic app with Capacitor to interact with that API. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. In this tutorial, we will have a combination of Ionic Cordova File Transfer, Image Picker from the Camera or Library, and other required modules. As you can see on the last line of the terminal, go to the newly created project folder. This is easy enough with simple text data, as we can just attach it directly to the body manually, e.g: In this scenario, we could just replace hello and josh with whatever data the user entered into the form inputs (exactly how this is achieved will depend on the framework being used). Although its hidden we can still capture the event when an image was selected, which will as a result upload that file using our service! Let's take a look at adding these modifications to our example so that we can handle both single and multiple file uploads (the single upload is redundant here, I am just keeping it to show the difference between the two methods): As the multiple file uploads add quite a bit of bulk to the example, I will just be including the modified StencilJS version of the frontend below. This is a Ionic 5 project that only downloads and open XLSX and PDF files using Capacitor Filesystem plugins, meant to serve as an example for those who are struggling on these tasks, feel free to use my code and to leave a star on my repo :). To make it super easy for others to help you out, you might consider setting up an example on Stack Blitz so others can jump right into your code. The example above will handle uploading an individual file to the backend, but we might also want to upload multiple files at once. The following tools and requirements should prepare before starting the tutorial. To achieve that we use the combination of Camera, File and File Transfer plugin. Simple demonstration of uploading a file to firebase storage from an ionic framework application. If we were using a standard HTML form, then we might specify an array of files likes this: But again, we generally don't just submit HTML forms in StencilJS/Angular/React applications. Handling file uploads is somewhat tricky business, but the FormData API and multer (with the help of busboy) simplifies things a great deal for us. As you might be aware unlike Android, iOS will not give direct access to its file system. This tutorial assumes you already have a functional web application that accepts file uploads from different domains or platforms. If you find an error or some outdated code that you would like to help fix, feel free to send me a pull request on GitHub, // Get a reference to the file that has just been added to the input, // Create a form data object using the FormData API, // Add the file that was just added to the form data, // POST formData to server using Fetch API, // POST formData to server using HttpClient, npm install express cors body-parser multer morgan, using NestJS to handle file uploads on the backend, HTTP Requests in StencilJS with the Fetch API. Join the discussion on Twitter. The FormData API allows us to dynamically create form data that we can send via an HTTP request, without actually needing to use an HTML