Veutify v-file-input validation

Question

I would like to validate if a file has been chosen using v-file-input and ValidationProvider from vee-validate.

Below is my code:

<v-flex>
  <ValidationProvider rules="required" v-slot="{ errors }">
    <v-file-input
      show-size
      accept=".xlsx"
      placeholder="Click here to select your file"
      label="File name"
      :error="errors.length > 0"
      :error-messages="errors[0]"
      @change="selectFile"
    >
    </v-file-input>
  </ValidationProvider>
</v-flex>

Somehow the validation works but it works too well even after I have chosen a file:

I am not sure what I have done wrong?

Answer 1

Found out that I have to do it this way, not sure why mine above not working:

rules: [
  v => !!v || 'File is required',
  v => (v && v.size > 0) || 'File is required',
]

And my form:

<v-flex>
  <ValidationProvider :rules="rules" v-slot="{ errors }">
    <v-file-input
      show-size
      accept=".xlsx"
      placeholder="Click here to select your file"
      label="File name"
      :error="errors.length > 0"
      :error-messages="errors[0]"
      @change="selectFile"
    >
    </v-file-input>
  </ValidationProvider>
</v-flex>

https://codepen.io/subashdbc/pen/eYpVOKq

Posting the codes here to help anyone who needs this.