这个elementui的rules不生效啊

我模板上是这样写的

<el-form ref="ruleForm" :model="goods" label-width="80px" :rules="rules">
    <el-tabs @tab-click="tabChange" :before-leave="beforeLeave" v-model="activeName" tab-position="left">

        <el-tab-pane name='0' label="基本信息">
            <el-form-item label="商品名称" prop="goods_name">
                <el-input style="width: 850px;" v-model="goods.goods_name"></el-input>
            </el-form-item>

            <el-form-item label="商品价格" prop="goods_price">
                <el-input style="width: 850px;" v-model="goods.goods_price"></el-input>
            </el-form-item>

            <el-form-item label="商品重量" prop="goods_weight">
                <el-input style="width: 850px;" v-model="goods.goods_weight"></el-input>
            </el-form-item>

             <el-form-item label="商品数量" prop="goods_number">
                <el-input style="width: 850px;" v-model="goods.goods_number"></el-input>
            </el-form-item>

            <el-form-item label="商品分类" prop="goods_cat">
                <el-cascader
                v-model="cat"
                :options="categories"
                :props="{ expandTrigger: 'hover' }"
                clearable></el-cascader>
            </el-form-item>

        </el-tab-pane>

    </el-tabs>
</el-form>

后边还有几个表单元素我不做校验，就没写
然后数据和rules我感觉也没问题啊

data(){
    return {
        goods: {
                goods_name: '',
                goods_price: '',
                goods_number: '',
                goods_weight: '',
                goods_cat: '',
                goods_introduce: '',
                pics: [],
                attrs: []
         },
        rules: {
                goods_name: [{require: true, message: '请输入商品名称', trigger: 'blur'}],
                goods_price: [{require: true, message: '请输入商品价格', trigger: 'blur'}],
                goods_number: [{require: true, message: '请输入商品数量', trigger: 'blur'}],
                goods_weight: [{require: true, message: '请输入商品重量', trigger: 'blur'}],
                goods_cat: [{require: true, message: '请选择商品分类', trigger: 'blur'}]
        }
    }
}

但是rules就是不生效，输入框失焦之后啥提示也没有，整个页面见不到一点红😂实在不知道哪出问题了

看下是不是tabs影响的，activeName赋个默认值