How do I upload image in vuejs?

Question

Please, below is my code in the script section of my vue component.

I'm getting all the input fields right but the image and video uploads are showing empty values.

I have tried to solve this issue but to no avail.

        playVideo(url) {
            let video = $('#video-preview').get(0);
            video.preload = 'metadata';
            // Load video in Safari / IE11
            if (url) {
                video.muted = false;
                video.playsInline = true;
                video.play();
            }
        },

        // Read a file input as a data URL.
        readDataUrl(input, callback) {
            if (input.files && input.files[0]) {
                let fileReader = new FileReader();
                fileReader.onload = function () {
                    callback(fileReader.result);
                };
                fileReader.readAsDataURL(input.files[0]);
            }
            else {
                callback(null);
            }
        },

        // Read a file input as an object url.
        readObjectUrl(input, callback) {
            if (input.files && input.files[0]) {
                let fileReader = new FileReader();
                fileReader.onload = function () {
                    let blob = new Blob([fileReader.result], {type: input.files[0].type});
                    let url = URL.createObjectURL(blob);
                    callback(url, blob);
                };
                fileReader.readAsArrayBuffer(input.files[0]);
            }
            else {
                callback(null);
            }

        },

    }

}

What exactly I want to achieve is upload image and video file, preview them before saving as blob.

The above image shows my response @samayo

The image and video blob are showing empty values.

Answer 1

If you are using axios or fetch uploading files with vue is pretty easy.

This is a copy/pasta from my current project. I use axios to upload images:

First you'll need to have your input look like this:

<input type="file" accept="image/*" @change="uploadImage($event)" id="file-input">

Then add a method like this:

methods: {

  uploadImage(event) {

    const URL = 'http://foobar.com/upload'; 

    let data = new FormData();
    data.append('name', 'my-picture');
    data.append('file', event.target.files[0]); 

    let config = {
      header : {
        'Content-Type' : 'image/png'
      }
    }

    axios.put(
      URL, 
      data,
      config
    ).then(
      response => {
        console.log('image upload response > ', response)
      }
    )
  }
}

Answer 2

I think in your case you are looking for a solution like this

example: uploading a image and previewing it before submission

<template>
   <div>
      <img src:"previewImage" class="uploading-image" />
      <input type="file" accept="image/jpeg" @change=uploadImage>
   </div>
</template>

<script>
    export default {
        name:'imageUpload',
        data(){
            return{
               previewImage:null
            }
        },
        methods:{
            uploadImage(e){
                const image = e.target.files[0];
                const reader = new FileReader();
                reader.readAsDataURL(image);
                reader.onload = e =>{
                    this.previewImage = e.target.result;
                    console.log(this.previewImage);
                };
            }
        }
     }  // missing closure added
</script>



<style>
   .uploading-image{
     display:flex;
   }
 </style>

Answer 3

If you want to upload an image and preview it before submission you can use simple and functional way as optionally.

<template>
  <input type="file" accept="image/*" @change="onChange" />
  <div id="preview">
    <img v-if="item.imageUrl" :src="item.imageUrl" />
  </div>
</template>


<script>
export default {
  name: 'imageUpload',
  data() {
    return {
      item:{
          //...
          image : null,
          imageUrl: null
      }
    }
  },
  methods: {
    onChange(e) {
      const file = e.target.files[0]
      this.image = file
      this.item.imageUrl = URL.createObjectURL(file)
    }
  }
} 
</script>