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API 风格:

Form 表單 ​

LhForm 和 LhFormItem 提供模型綁定、必填校驗和欄位錯誤展示。

基礎用法 ​

基礎用法
vue
<script setup lang="ts">
import { reactive, ref } from 'vue'
import { LhForm, LhFormItem, LhInput, LhButton, LhMessage } from '@lh-ui/vue3'

const formRef = ref()
const formModel = reactive({
  name: '',
  email: '',
})

const formRules = {
  name: [{ required: true, message: '请输入姓名' }],
  email: [{ required: true, message: '请输入邮箱' }],
}

async function submitForm() {
  const valid = await formRef.value.validate()
  if (valid) {
    LhMessage.success('提交成功')
    console.log('提交成功', formModel)
  }
}

function resetForm() {
  formRef.value?.resetFields()
}
</script>

<template>
  <LhForm ref="formRef" :model="formModel" :rules="formRules" label-width="80px">
    <LhFormItem prop="name" label="姓名" required>
      <LhInput v-model="formModel.name" placeholder="请输入姓名" />
    </LhFormItem>
    <LhFormItem prop="email" label="邮箱" required>
      <LhInput v-model="formModel.email" placeholder="请输入邮箱" />
    </LhFormItem>
    <LhFormItem>
      <LhButton type="primary" @click="submitForm">提交</LhButton>
      <LhButton plain @click="resetForm" style="margin-left: 8px">重置</LhButton>
    </LhFormItem>
  </LhForm>
</template>
vue
<script>
import { LhForm, LhFormItem, LhInput, LhButton, LhMessage } from '@lh-ui/vue3'

export default {
  components: { LhForm, LhFormItem, LhInput, LhButton },
  data() {
    return {
      formModel: { name: '', email: '' },
      formRules: {
        name: [{ required: true, message: '请输入姓名' }],
        email: [{ required: true, message: '请输入邮箱' }],
      },
    }
  },
  methods: {
    async submitForm() {
      const valid = await this.$refs.formRef.validate()
      if (valid) {
        LhMessage.success('提交成功')
        console.log('提交成功', this.formModel)
      }
    },
    resetForm() { this.$refs.formRef?.resetFields() },
  },
}
</script>

<template>
  <LhForm ref="formRef" :model="formModel" :rules="formRules" label-width="80px">
    <LhFormItem prop="name" label="姓名" required>
      <LhInput v-model="formModel.name" placeholder="请输入姓名" />
    </LhFormItem>
    <LhFormItem prop="email" label="邮箱" required>
      <LhInput v-model="formModel.email" placeholder="请输入邮箱" />
    </LhFormItem>
    <LhFormItem>
      <LhButton type="primary" @click="submitForm">提交</LhButton>
      <LhButton plain @click="resetForm">重置</LhButton>
    </LhFormItem>
  </LhForm>
</template>

自訂主題 ​

表單可以套用自訂主題色。

青花瓷主題表單
vue
<script setup lang="ts">
import { reactive } from 'vue'
import { LhConfigProvider, LhForm, LhFormItem, LhInput, LhButton } from '@lh-ui/vue3'

const themeForm = reactive({ name: '' })
const cerblueTheme = {
  'primary-color': '#2B4C7C',
  'primary-color-hover': '#3D649E',
  'primary-color-bg': '#E8EDF3',
}
</script>

<template>
  <!-- 青花瓷主題 -->
  <LhConfigProvider :theme-vars="cerblueTheme">
    <LhForm :model="themeForm" label-width="80px">
      <LhFormItem label="姓名">
        <LhInput v-model="themeForm.name" />
      </LhFormItem>
      <LhFormItem>
        <LhButton type="primary">提交</LhButton>
      </LhFormItem>
    </LhForm>
  </LhConfigProvider>
</template>
vue
<script>
import { LhConfigProvider, LhForm, LhFormItem, LhInput, LhButton } from '@lh-ui/vue3'

export default {
  data() {
    return {
      themeForm: { name: '' },
      cerblueTheme: {
        'primary-color': '#2B4C7C',
        'primary-color-hover': '#3D649E',
        'primary-color-bg': '#E8EDF3',
      },
    }
  },
}
</script>

<template>
  <!-- 青花瓷主題 -->
  <LhConfigProvider :theme-vars="cerblueTheme">
    <LhForm :model="themeForm" label-width="80px">
      <LhFormItem label="姓名">
        <LhInput v-model="themeForm.name" />
      </LhFormItem>
      <LhFormItem>
        <LhButton type="primary">提交</LhButton>
      </LhFormItem>
    </LhForm>
  </LhConfigProvider>
</template>

國際化 ​

國際化表單
vue
<script setup lang="ts">
import { reactive, ref } from 'vue'
import { LhConfigProvider, LhForm, LhFormItem, LhInput, LhButton } from '@lh-ui/vue3'
import { zhCN } from '@lh-ui/vue3'
import { enUS } from '@lh-ui/vue3'

const locale = ref('zh-CN')
const formModel = reactive({ name: '' })
</script>

<template>
  <!-- 國際化設定 -->
  <LhConfigProvider :locale="locale === 'zh-CN' ? zhCN : enUS">
    <LhForm :model="formModel" label-width="80px">
      <LhFormItem :label="locale === 'zh-CN' ? '姓名' : 'Name'">
        <LhInput v-model="formModel.name" :placeholder="locale === 'zh-CN' ? '请输入姓名' : 'Enter name'" />
      </LhFormItem>
      <LhFormItem>
        <LhButton type="primary">{{ locale === 'zh-CN' ? '提交' : 'Submit' }}</LhButton>
      </LhFormItem>
    </LhForm>
  </LhConfigProvider>
</template>
vue
<script>
import { LhConfigProvider, LhForm, LhFormItem, LhInput, LhButton } from '@lh-ui/vue3'
import { zhCN } from '@lh-ui/vue3'
import { enUS } from '@lh-ui/vue3'

export default {
  data() {
    return {
      locale: 'zh-CN',
      formModel: { name: '' },
      zhCN: zhCN,
      enUS: enUS,
    }
  },
}
</script>

<template>
  <!-- 國際化設定 -->
  <LhConfigProvider :locale="locale === 'zh-CN' ? zhCN : enUS">
    <LhForm :model="formModel" label-width="80px">
      <LhFormItem :label="locale === 'zh-CN' ? '姓名' : 'Name'">
        <LhInput v-model="formModel.name" :placeholder="locale === 'zh-CN' ? '请输入姓名' : 'Enter name'" />
      </LhFormItem>
      <LhFormItem>
        <LhButton type="primary">{{ locale === 'zh-CN' ? '提交' : 'Submit' }}</LhButton>
      </LhFormItem>
    </LhForm>
  </LhConfigProvider>
</template>

標籤位置與行內版面配置 ​

label-position 切換標籤對齊(left / right / top);inline 讓表單項水平排列。

label-position / inline
vue
<script setup lang="ts">
import { reactive } from 'vue'
const fpModel = reactive({ name: '', city: '' })
</script>

<template>
  <LhForm :model="fpModel" label-position="top" inline>
    <LhFormItem prop="name" label="名称" required>
      <LhInput v-model="fpModel.name" />
    </LhFormItem>
    <LhFormItem prop="city" label="城市">
      <LhInput v-model="fpModel.city" />
    </LhFormItem>
  </LhForm>
</template>
vue
<script>
export default {
  data() {
    return {
      fpModel: { name: '', city: '' },
    }
  },
}
</script>

<template>
  <LhForm :model="fpModel" label-position="top" inline>
    <LhFormItem prop="name" label="名称" required>
      <LhInput v-model="fpModel.name" />
    </LhFormItem>
    <LhFormItem prop="city" label="城市">
      <LhInput v-model="fpModel.city" />
    </LhFormItem>
  </LhForm>
</template>

LhForm Props ​

屬性說明類型預設值
model表單資料物件{ [x: string]: unknown; }—
rules欄位校驗規則{ [x: string]: LhFormRule[]; }—
labelPosition標籤位置"left" | "right" | "top"'right'
labelWidth標籤寬度string | number—
inline是否使用行內版面配置booleanfalse
sxsx 快速版面配置屬性LhSxProps—

LhFormItem Props ​

屬性說明類型預設值
prop對應 model 的欄位路徑,支援 user.namestring—
label標籤文字string—
required是否必填booleanfalse
rules目前欄位的校驗規則,優先級高於 Form rulesLhFormRule[]—

校驗規則 ​

ts
type LhFormRule = {
  required?: boolean
  message?: string
  validator?: (value: unknown, model: Record<string, unknown>) => string | undefined
}

LhForm 暴露 validate() 和 resetFields() 方法。

無障礙 ​

  • LhFormItem 的錯誤文案帶 role="alert",校驗失敗時螢幕閱讀器立即播報
  • 內容區透過 aria-describedby 關聯錯誤文案,輔助技術可讀取「欄位 → 錯誤」的對應關係;無錯誤時關聯自動移除
  • 表單控制項(Input / Select / Checkbox / Radio / Switch / Slider / InputNumber / DatePicker / TimePicker / Cascader)讀取所屬 LhFormItem 的校驗狀態,校驗失敗時在控制項上標記 aria-invalid,錯誤消除後自動移除;控制項放在 LhFormItem 之外時不受影響
  • 必填兜底文案取自語言包 form.required(中文「此項為必填」),隨 ConfigProvider 語言切換;rules 裡的 message 優先級更高

類型定義 ​

本元件對外匯出的 TypeScript 類型結構如下(自動提取自 packages/components/form/src/types.ts 與 @lh-ui/share/core/* 原始碼,點選各條目展開檢視完整定義;屬性說明見上方 Props 表):

LhFormLabelPosition
ts
export type LhFormLabelPosition = 'left' | 'right' | 'top'
LhFormProps
ts
export interface LhFormProps {
  model: Record<string, unknown>
  rules?: Record<string, LhFormRule[]>
  labelPosition?: LhFormLabelPosition
  labelWidth?: string | number
  inline?: boolean
  /** sx 快速版面配置屬性 */
  sx?: LhSxProps
}
LhFormItemProps
ts
export interface LhFormItemProps {
  prop?: string
  label?: string
  required?: boolean
  rules?: LhFormRule[]
}
LhFormRule (來自 @lh-ui/share/core/form)
ts
export interface LhFormRule {
  required?: boolean
  message?: string
  validator?: (value: unknown, model: Record<string, unknown>) => string | undefined
}