Using v-model with the input type files in Vue.js allows for easy two

Question

Using v-model with the input type files in Vue.js allows for easy two

Is there a way to retrieve data from v-model array in an input type of "file" that allows multiple selections?

<input type="file" multiple v-model="modFiles[index]">
<input type="file" multiple v-model="modFiles[index]">
<input type="file" multiple v-model="modFiles[index]">

Currently, with a v-for loop, I am only able to access the first piece of data from each modFiles[].

this.modFiles[0] //retrieves the first file from the selection

However, this is limited to just the initial data. How can I retrieve all the data within modFiles[0], modFiles[1], modFiles[3]? And how do I determine the number of files inside each modFiles?

this.modFiles[0].length //throws an error here

Any help on this matter would be greatly appreciated. Thank you.

javascript vue.js v-model

Answer 1

Answer №1

Support for bidirectional binding is not available when using <input type="file">, as the value cannot be set on such inputs (the value is only assigned after the user selects a file).

Instead, utilize the @change event:

<input type="file" multiple @change="handleFileChange($event, index)">

methods: {
  handleFileChange(evt, index) {
    // evt.target.files contains Array-like FileList object
  }
}

Update:

To toggle the visibility of your submit button based on the number of selected files, add a new data property:

data: {
  filesSelected: 0
},
methods: {
  handleFileChange(evt, index) {
    this.filesSelected = evt.target.files.length;
  }
}

Then, utilize it in your template:

<input type="submit" v-show="filesSelected > 0" />

Answer 2

Support for bidirectional binding is not available when using <input type="file">, as the value cannot be set on such inputs (the value is only assigned after the user selects a file).

Instead, utilize the @change event:

<input type="file" multiple @change="handleFileChange($event, index)">

methods: {
  handleFileChange(evt, index) {
    // evt.target.files contains Array-like FileList object
  }
}

Update:

To toggle the visibility of your submit button based on the number of selected files, add a new data property:

data: {
  filesSelected: 0
},
methods: {
  handleFileChange(evt, index) {
    this.filesSelected = evt.target.files.length;
  }
}

Then, utilize it in your template:

<input type="submit" v-show="filesSelected > 0" />

Using v-model with the input type files in Vue.js allows for easy two

Answer №1

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