Bootstrap

elementui的组件:form表单之动态增减表单项

记录一下对这个组件的使用。

源代码是这样的:

<el-form :model="dynamicValidateForm" ref="dynamicValidateForm" label-width="100px" class="demo-dynamic">
  <el-form-item
    prop="email"
    label="邮箱"
    :rules="[
      { required: true, message: '请输入邮箱地址', trigger: 'blur' },
      { type: 'email', message: '请输入正确的邮箱地址', trigger: ['blur', 'change'] }
    ]"
  >
    <el-input v-model="dynamicValidateForm.email"></el-input>
  </el-form-item>
  <el-form-item
    v-for="(domain, index) in dynamicValidateForm.domains"
    :label="'域名' + index"
    :key="domain.key"
    :prop="'domains.' + index + '.value'"
    :rules="{
      required: true, message: '域名不能为空', trigger: 'blur'
    }"
  >
    <el-input v-model="domain.value"></el-input><el-button @click.prevent="removeDomain(domain)">删除</el-button>
  </el-form-item>
  <el-form-item>
    <el-button type="primary" @click="submitForm('dynamicValidateForm')">提交</el-button>
    <el-button @click="addDomain">新增域名</el-button>
    <el-button @click="resetForm('dynamicValidateForm')">重置</el-button>
  </el-form-item>
</el-form>
<script>
  export default {
    data() {
      return {
        dynamicValidateForm: {
          domains: [{
            value: ''
          }],
          email: ''
        }
      };
    },
    methods: {
      submitForm(formName) {
        this.$refs[formName].validate((valid) => {
          if (valid) {
            alert('submit!');
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      },
      resetForm(formName) {
        this.$refs[formName].resetFields();
      },
      removeDomain(item) {
        var index = this.dynamicValidateForm.domains.indexOf(item)
        if (index !== -1) {
          this.dynamicValidateForm.domains.splice(index, 1)
        }
      },
      addDomain() {
        this.dynamicValidateForm.domains.push({
          value: '',
          key: Date.now()
        });
      }
    }
  }
</script>

但是我的需求是:自动增减的表单项是下拉选,从所有人中选择审批人,自动增减的就是审批人1,审批人2...

面对源代码的增减项是一个input输入框,我是这样改的:

          <el-form-item
              v-for="(user, index) in model.userList"
              :label="'审批人' + (index + 1)"
              :rules="{required: true, message: '审批人不能为空', trigger: 'blur'}">
              <template slot-scope="scope">
                <el-select
                  v-model="model.userList[index]"
                  value-key="userId" placeholder="请选择">
                  <el-option
                    v-for="item in teacherList"
                    :key="item.userId"
                    :label="item.userName"
                    :value="item">
                  </el-option>
                </el-select>
                <el-button @click.prevent="removeDomain(user)">删除</el-button>
              </template>
            </el-form-item>
            <el-form-item>
              <el-button @click="addDomain">添加审批人</el-button>
              <el-button type="primary" @click="goBack">返回</el-button>
              <el-button type="primary" @click="saveModel">保存</el-button>
            </el-form-item>
          </el-form>

还有一点值得记录得就是下拉选,如果想保存的是整个对象,就得用上value-key。

下拉选的回显,之前的属性和下拉选List里的对象的属性是一样的才能显示出来,不然是不能回显的。

好了,还有好多工作待完成,这篇写的着实潦草了些,不过因为昨天我用到这个功能的时候以为我早就记录过了,结果并没有,所以非常有必要先记录下来。以后有时间在完善吧。

;