mat切换按钮在点击后不改变它的值

<template>
  <div>
    <mat-button-toggle v-model="buttonValue">按钮</mat-button-toggle>
  </div>
</template>

<script>
export default {
  data() {
    return {
      buttonValue: false
    };
  }
};
</script>

<template>
  <div>
    <mat-button-toggle v-model="buttonValue">按钮</mat-button-toggle>
    <p>按钮的值：{{ fixedValue }}</p>
  </div>
</template>

<script>
export default {
  data() {
    return {
      buttonValue: false
    };
  },
  computed: {
    fixedValue() {
      return false;
    }
  }
};
</script>