Nuxt and cloudinary - Upload images from client side directly to cloudinary

Question

I want to upload images from my Nuxt (vue) app to Cloudinary directly (no server involved). I couldn't find any reference to it that acutely do the work?

    <v-file-input
      v-else
      v-model="imageFile"
      accept="image/*"
      @change="onImageChange"
    >
    </v-file-input>
</template>

Java script

   methods: {
    this.isLoading = true;
      try {
        const response = awai UPLOAD TO CLODINARY
        this.$emit('change', response);
      } catch (e) {
        console.log(e);
      } finally {
        this.isLoading = false;
      }
}

}```

Answer 1

First, install the nuxt cloudinary pachage by visiting this link Nuxt Cloudinary Introduction, then follow the setup documentation and make sure you are setup. Next, visit this link Nuxt Cloudinary Upload. That's all. Note that the later link uses uploadPreset as object key in the docs. Please change it to upload_preset so you dont get any error. Post setup code snipet below

<script>
export default {
  methods: {
    async selectFile(e) {
      const file = e.target.files[0];

      /* Make sure file exists */
      if (!file) return;

      /* create a reader */
      const readData = (f) =>  new Promise((resolve) => {
          const reader = new FileReader();
          reader.onloadend = () => resolve(reader.result);
          reader.readAsDataURL(f);
      });

      /* Read data */
      const data = await readData(file);

      /* upload the converted data */
      const instance = this.$cloudinary.upload(data, {
        folder: 'upload-examples',
        uploadPreset: 'your-upload-preset',
      })
    }
  }  
}
</script>

Answer 2

You can see this Cloudinary CodePen example for HTML5 Upload.

the fact you're using Nuxt shouldn't be a problem, since this all happens after rendering anyway.

Please see this link https://codepen.io/team/Cloudinary/pen/QgpyOK

I'm adding the actual code from the codepen

JS

const cloudName = 'demo';
const unsignedUploadPreset = 'doc_codepen_example';

var fileSelect = document.getElementById("fileSelect"),
  fileElem = document.getElementById("fileElem"),
    urlSelect = document.getElementById("urlSelect");

fileSelect.addEventListener("click", function(e) {
  if (fileElem) {
    fileElem.click();
  }
  e.preventDefault(); // prevent navigation to "#"
}, false);

urlSelect.addEventListener("click", function(e) {
  uploadFile('https://res.cloudinary.com/demo/image/upload/sample.jpg')
  e.preventDefault(); // prevent navigation to "#"
}, false);


// ************************ Drag and drop ***************** //
function dragenter(e) {
  e.stopPropagation();
  e.preventDefault();
}

function dragover(e) {
  e.stopPropagation();
  e.preventDefault();
}

dropbox = document.getElementById("dropbox");
dropbox.addEventListener("dragenter", dragenter, false);
dropbox.addEventListener("dragover", dragover, false);
dropbox.addEventListener("drop", drop, false);

function drop(e) {
  e.stopPropagation();
  e.preventDefault();

  var dt = e.dataTransfer;
  var files = dt.files;

  handleFiles(files);
}

// *********** Upload file to Cloudinary ******************** //
function uploadFile(file) {
  var url = `https://api.cloudinary.com/v1_1/${cloudName}/upload`;
  var xhr = new XMLHttpRequest();
  var fd = new FormData();
  xhr.open('POST', url, true);
  xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest');

  // Reset the upload progress bar
   document.getElementById('progress').style.width = 0;
  
  // Update progress (can be used to show progress indicator)
  xhr.upload.addEventListener("progress", function(e) {
    var progress = Math.round((e.loaded * 100.0) / e.total);
    document.getElementById('progress').style.width = progress + "%";

    console.log(`fileuploadprogress data.loaded: ${e.loaded},
  data.total: ${e.total}`);
  });

  xhr.onreadystatechange = function(e) {
    if (xhr.readyState == 4 && xhr.status == 200) {
      // File uploaded successfully
      var response = JSON.parse(xhr.responseText);
      // https://res.cloudinary.com/cloudName/image/upload/v1483481128/public_id.jpg
      var url = response.secure_url;
      // Create a thumbnail of the uploaded image, with 150px width
      var tokens = url.split('/');
      tokens.splice(-2, 0, 'w_150,c_scale');
      var img = new Image(); // HTML5 Constructor
      img.src = tokens.join('/');
      img.alt = response.public_id;
      document.getElementById('gallery').appendChild(img);
    }
  };

  fd.append('upload_preset', unsignedUploadPreset);
  fd.append('tags', 'browser_upload'); // Optional - add tag for image admin in Cloudinary
  fd.append('file', file);
  xhr.send(fd);
}

// *********** Handle selected files ******************** //
var handleFiles = function(files) {
  for (var i = 0; i < files.length; i++) {
    uploadFile(files[i]); // call the function to upload the file
  }
};

HTML:

<div id="dropbox">
  <h1>Client-Side Upload to Cloudinary with JavaScript</h1> Learn more in this blog post - <a href="https://cloudinary.com/blog/direct_upload_made_easy_from_browser_or_mobile_app_to_the_cloud">Direct upload made easy from browser or mobile app to the cloud</a>

  <form class="my-form">
    <div class="form_line">
      <h4>Upload multiple files by clicking the link below or by dragging and dropping images onto the dashed region</h4>
      <div class="form_controls">
        <div class="upload_button_holder">
          <input type="file" id="fileElem" multiple accept="image/*" style="display:none" onchange="handleFiles(this.files)">
          <a href="#" id="fileSelect">Select some files</a>&nbsp;&nbsp;
          <a href="#" id="urlSelect">URL Upload</a>
        </div>
      </div>
    </div>
  </form>
  <div class="progress-bar" id="progress-bar">
    <div class="progress" id="progress"></div>
  </div>
  <div id="gallery" />
</div>
</div>