解决vue2+elementUI表单重置拿不到数据问题

我这里的需求就是当我点击提交时,将数据添加到数组内,并且将表单数据全部恢复初始状态,但是直接修改表单数据的话会触发校验,不能达到我想要的效果,于是使用了官方提供的resetFields方法是表单恢复到初始状态,也就是每次点击提交表单校验完毕后重置表单数据,但是这里有有个问题,加上了重置的resetFields方法后,每次在表单校验完成后一直拿不到this.form表单的数据,因此这里记录一下解决的方法主要是扩展运算符深拷贝数据,看如下代码示例

<template>
  <div class="Curriculum">
    <el-button @click="addClass">新增课程</el-button>
    <!-- 新增课程弹窗 -->
    <el-dialog
      title="新增课程"
      :visible.sync="dialogVisible"
      width="30%"
      :before-close="handleClose"
    >
      <el-form
        :model="form"
        :rules="rules"
        ref="uploadForm"
        label-width="120px"
      >
        <el-form-item label="名称" prop="className">
          <el-input
            v-model="form.className"
            placeholder="请输入课程名称"
          ></el-input>
        </el-form-item>
        <el-form-item label="课程内容" prop="classType">
          <el-checkbox-group v-model="form.classType">
            <el-checkbox label="跑步机" name="classType1"></el-checkbox>
            <el-checkbox label="划船机" name="classType2"></el-checkbox>
            <el-checkbox label="地面" name="classType3"></el-checkbox>
          </el-checkbox-group>
        </el-form-item>
        <el-form-item label="课程图标" prop="image">
          <input
            ref="inputs"
            type="file"
            name=""
            id=""
            hidden
            @change="handleChange"
          />
          <div class="avatar-uploader" @click="uploadImage">
            <img v-if="form.image" :src="form.image" class="curriculum-icon" />
            <i v-else class="el-icon-plus"></i>
          </div>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="submitForm">提交</el-button>
        </el-form-item>
      </el-form>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Curriculum",
  data() {
    return {
      dialogVisible: false,
      form: {
        className: "",
        classType: [],
        image: "", // 用于存储已上传的图片的Base64编码
      },
      dataList: [], // 课程数据
      rules: {
        className: [
          { required: true, message: "请输入课程名称", trigger: "blur" },
        ],
        classType: [
          {
            required: true,
            message: "请选择课程内容",
            trigger: "change",
          },
        ],
        image: [{ required: true, message: "请上传图片", trigger: "change" }],
      },
    };
  },
  methods: {
    addClass() {
      this.dialogVisible = true;
    },
    handleClose() {
      this.$refs.uploadForm.resetFields();
      this.dialogVisible = false;
    },
    uploadImage() {
      this.$refs.inputs.click();
    },
    handleChange() {
      var file = this.$refs.inputs.files[0]; // 获取文件对象

      if (!file) {
        console.log("请选择图片");
        return;
      }
      if (!file.type.startsWith("image")) {
        console.log("只能上传图片");
        file = null;
        return;
      }

      console.log("file", file);

      // 转base64
      const reader = new FileReader(); // 创建FileReader对象
      reader.onload = (e) => {
        this.form.image = e.target.result; // 将读取的结果赋值给form.image
      };
      reader.readAsDataURL(file); // 读取文件并转换为Base64
    },
    submitForm() {
      this.$refs.uploadForm.validate((valid) => {
        if (valid) {
          // 模拟添加课程(这里一定要用扩展运算符,不然拿不到this.form数据)
          this.dataList.push({ ...this.form });
          console.log("this.form", this.form);  // 数据里面都是空的拿不到
          console.log("this.dataList", this.dataList);  // 可以拿到数据

          this.$message({
            type: "success",
            message: "添加成功!",
          });
          this.$refs.uploadForm.resetFields();
          this.dialogVisible = false;
        } else {
          this.$message({
            type: "error",
            message: "校验失败!",
          });
          return false;
        }
      });
    },
  },
};
</script>

<style scoped lang="scss">
.avatar-uploader {
  width: 100px;
  height: 100px;
  border: 1px solid #cccccc;
  border-radius: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}
.curriculum-icon {
  width: 100px;
  height: 100px;
}
</style>