How to select to make v-textfield read-only? for my model, I use a v-select and a v-text field for when a selected value makes v-textfield read-only, but how is this implemented in vuetify?
<template>
  <v-container>
    <v-row>
      <v-col cols="12" sm="3" md="3">
<v-select
:items="['Yes','No']"
label="select"
></v-select>
      </v-col>      

      <v-col cols="12" sm="3" md="3">
<v-text-field
label="ReadOnly"
></v-text-field>
      </v-col>
    </v-row>
  </v-container>
</template>


Store the selected value of the v-select, then control the readonly prop of the v-select based on the selected value. I assume that when you selected "yes", the textfield will be readonly
<v-select
  v-model="selected"
  :items="['Yes','No']"
  label="select"
></v-select>
...
<v-text-field
  label="ReadOnly"
  :readonly="selected === 'yes'"
></v-text-field>

Here's a sample demo at codesandbox: