antd vue中，如何給表單動態添加input，解決遇到一些坑

最近作項目用的組件庫Ant Design Vue,這個組件看起來文檔很詳細，但也會遇到一些意想不到的問題，最後看文檔沒辦法解決，只能去看源碼，折騰了很久，終於把問題給解決了，遇到的問題主要是當添加input的時候驗證不能友好的使用，當一個input添加，而後刪除，提交表單的時候會提示填寫刪除的input，還有個問題就是當把填寫好的內容，刪除提交的時候，已刪除的內容仍是能提交到後臺，用方法處理

form.getFieldValue('email').splice(index, 1)
      form.getFieldValue('truename').splice(index, 1)
      form.setFieldsValue({
        keys: keys.filter(key => key !== index),
        email: form.getFieldValue('email'),
        truename: form.getFieldValue('truename')
      })
複製代碼

這樣設置的值的時候，數據仍是沒刪除成功，還能提交到後臺，後來才知道須要先註冊 註冊，這樣setFieldsValue方法才能成功，可是添加了以後也沒刪除成功，

this.form.getFieldDecorator('keys', { initialValue: [0], preserve: true })
    this.form.getFieldDecorator('email', { initialValue: [], preserve: false })
    this.form.getFieldDecorator('truename', { initialValue: [], preserve: false })
複製代碼

通過看代碼後來發現文檔裏面有個沒提示到this.form.clearField('')，用這個方法總算解決了這個問題。 可是上面方法也有個很差的方法就是，keys在刪除的時候不能按順序排列，形成values數組裏面也出現了空字段現象，須要從新處理數組，把字段設置成preserve: false。用對象數組循環數據，用循環的中的索引值組成keys，這樣在刪除，添加的時候，keys的索引跟values數組一直對應，values數組中不會出現空元素現象，在表單提交的時候加上須要驗證的字段，這樣問題就解決了，大體的代碼以下

<template>
  <div class="invite-new">
    <div class="invite-second-crumb">
      <second-crumb />
    </div>
    <div class="invite-box">
      <h2>經過郵件邀請，無需審覈</h2>
      <p>發送邀請給指定的郵箱，對方只需進行我的帳戶設置便可直接加入團隊</p>
      <div class="invite-list">
        <a-form
          ref="inviteForm"
          layout="inline"
          :form="form"
          class="demo-form-inline"
          @submit.prevent="submitHandle('inviteForm')"
        >
          <div
            v-for="(item,index) in formData"
            :key="index"
            class="invite-item"
          >
            <a-form-item
              :required="false"
            >
              <div class="input_email">
                <a-input
                  v-decorator="[ `email[${index}]`, { validateTrigger: [ 'blur'], rules: [{ required: true, whitespace: true, message: '請輸入郵箱' }, { validator: isEmailRe }, { validator:isErrorEmail }, { type:'email', message: '郵箱格式不正確' } ] } ]"
                  placeholder="請輸入郵箱"
                />
              </div>
            </a-form-item>
            <a-form-item
              v-if="item.isreg *1 === 1"
              class="member-name"
            >
              <span class="has-register-btn">
                已註冊用戶
              </span>
            </a-form-item>
            <a-form-item
              class="member-name"
            >
              <a-input
                v-decorator="[ `truename[${index}]`,{ rules:[{ required: true, message: '請輸入姓名'}] }]"
                placeholder="姓名"
              />
            </a-form-item>
            <a-form-item>
              <a-button
                v-if="form.getFieldValue('keys').length > 1&&(index!==0)"
                class="del-invite-btn"
                @click="delteFormItem(index)"
              >
                刪除
              </a-button>
            </a-form-item>
          </div>
          <div class="invite-item">
            <a-form-item>
              <a-button
                class="add-invite-btn"
                @click="addItem"
              >
                新增
              </a-button>
            </a-form-item>
          </div>
          <div class="invite-item">
            <a-form-item>
              <a-button
                type="primary"
                html-type="submit"
                :disabled="loading"
              >
                發送邀請
              </a-button>
            </a-form-item>
          </div>
        </a-form>
      </div>
    </div>
  </div>
</template>
<script>
import SecondCrumb from '@/components/pc/organization/invite/SecondCrumb'
import { mapActions } from 'vuex'
export default {
  components: {
    SecondCrumb
  },
  data () {
    return {
      initTeamId: '',
      isLoading: false,
      submitting: false,
      initItem: {},
      formData: [
        {
          email: '',
          truename: '',
          isreg: 0
        }
      ]
    }
  },
  computed: {
    loading () {
      return this.submitting
    },
    args () {
      return this.$route.query
    },
    keys () {
      let arr = []
      this.formData.forEach((val, index) => {
        arr.push(index)
      })
      return arr
    }
  },
  watch: {
  },
  created () {
    this.form = this.$form.createForm(this)
    this.form.getFieldDecorator('keys', { initialValue: [], preserve: true })
    this.form.getFieldDecorator('email', { initialValue: [], preserve: false })
    this.form.getFieldDecorator('truename', { initialValue: [], preserve: false })
  },
  mounted () {
  },
  methods: {
    ...mapActions('organization/invite', ['ajaxSave', 'ajaxEmail']),
    addItem () {
      this.formData.push(
        {
          email: '',
          truename: '',
          isreg: 0
        }
      )
      const { form } = this
      form.setFieldsValue({
        keys: this.keys
      })
    },
    // 刪除邀請成員表單行
    delteFormItem (index) {
      const { form } = this
      // can use data-binding to set
      this.formData.splice(index, 1)
      form.getFieldValue('email').splice(index, 1)
      form.getFieldValue('truename').splice(index, 1)
      form.setFieldsValue({
        keys: this.keys,
        email: form.getFieldValue('email'),
        truename: form.getFieldValue('truename')
      })
    },
    setFormData (data) {
      const { formData } = this
      for (let i = 0; i < data.length; i++) {
        formData[i].truename = data[i]
      }
    },
    submitHandle () {
   
      this.form.validateFieldsAndScroll(['keys', 'email', 'truename'], async (err, values) => {
        const { form, formData } = this
        if (!err) {
          this.setFormData(form.getFieldValue('truename'))
          const chain = await this.ajaxSave()
          chain.params({ cid: this.args.cid * 1, inviteinfo: formData })
            .setForm(this.form)
            .fetch()
        }
      })
    },
    isEmailRe (rule, value, callback) {
      const length = this.form.getFieldValue('email').filter(item => item === value).length
      if (length > 1) {
        callback(new Error('郵箱重複！'))
      } else {
        callback()
      }
    },
    async isErrorEmail (rule, value, callback) {
      const index = this.form.getFieldValue('email').indexOf(value)
      const item = this.formData[index]
      let chain = await this.ajaxEmail()
      await chain.params({ email: value, cid: this.args.cid })
        .onNetSuccess((raw) => {
          const res = raw.data
          if (!res.error) {
            if (res.payload.isreg === 1) {
              // this.isHasReg = true
              item.isreg = 1
              item.truename = ''
            } else {
              item.isreg = 0
            }
            item.email = value
          } else {
            // item.msg = res.message
            // item.isreg = 3
            if (value && res.message) {
              callback(new Error(res.message))
            } else {
              callback()
            }
          }
        })
        .fetch()
    }
  }
}
</script>
複製代碼