<view class="container">
  <view class="radio-group">
    <radio-group bindchange="onModelChange">
      <label wx:for="{{models}}" wx:key="value" class="radio-item">
        <radio value="{{item.value}}" checked="{{item.value === selectedModel}}">{{item.name}}</radio>
      </label>
    </radio-group>
  </view>

  <view class="submit-container">
    <button bindtap="submitSelection" class="submit-btn">提交选择</button>
  </view>
</view>
