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- <template>
- <view class="uni-forms-item"
- :class="['is-direction-' + localLabelPos ,border?'uni-forms-item--border':'' ,border && isFirstBorder?'is-first-border':'']">
- <slot name="label">
- <view class="uni-forms-item__label" :class="{'no-label':!label && !required}"
- :style="{width:localLabelWidth,justifyContent: localLabelAlign}">
- <text v-if="required" class="is-required">*</text>
- <text>{{label}}</text>
- </view>
- </slot>
- <!-- #ifndef APP-NVUE -->
- <view class="uni-forms-item__content">
- <slot></slot>
- <view class="uni-forms-item__error" :class="{'msg--active':msg}">
- <text>{{msg}}</text>
- </view>
- </view>
- <!-- #endif -->
- <!-- #ifdef APP-NVUE -->
- <view class="uni-forms-item__nuve-content">
- <view class="uni-forms-item__content">
- <slot></slot>
- </view>
- <view class="uni-forms-item__error" :class="{'msg--active':msg}">
- <text class="error-text">{{msg}}</text>
- </view>
- </view>
- <!-- #endif -->
- </view>
- </template>
- <script>
- /**
- * uni-fomrs-item 表单子组件
- * @description uni-fomrs-item 表单子组件,提供了基础布局已经校验能力
- * @tutorial https://ext.dcloud.net.cn/plugin?id=2773
- * @property {Boolean} required 是否必填,左边显示红色"*"号
- * @property {String } label 输入框左边的文字提示
- * @property {Number } labelWidth label的宽度,单位px(默认65)
- * @property {String } labelAlign = [left|center|right] label的文字对齐方式(默认left)
- * @value left label 左侧显示
- * @value center label 居中
- * @value right label 右侧对齐
- * @property {String } errorMessage 显示的错误提示内容,如果为空字符串或者false,则不显示错误信息
- * @property {String } name 表单域的属性名,在使用校验规则时必填
- * @property {String } leftIcon 【1.4.0废弃】label左边的图标,限 uni-ui 的图标名称
- * @property {String } iconColor 【1.4.0废弃】左边通过icon配置的图标的颜色(默认#606266)
- * @property {String} validateTrigger = [bind|submit|blur] 【1.4.0废弃】校验触发器方式 默认 submit
- * @value bind 发生变化时触发
- * @value submit 提交时触发
- * @value blur 失去焦点触发
- * @property {String } labelPosition = [top|left] 【1.4.0废弃】label的文字的位置(默认left)
- * @value top 顶部显示 label
- * @value left 左侧显示 label
- */
- export default {
- name: 'uniFormsItem',
- options: {
- virtualHost: true
- },
- provide() {
- return {
- uniFormItem: this
- }
- },
- inject: {
- form: {
- from: 'uniForm',
- default: null
- },
- },
- props: {
- // 表单校验规则
- rules: {
- type: Array,
- default () {
- return null;
- }
- },
- // 表单域的属性名,在使用校验规则时必填
- name: {
- type: [String, Array],
- default: ''
- },
- required: {
- type: Boolean,
- default: false
- },
- label: {
- type: String,
- default: ''
- },
- // label的宽度 ,默认 80
- labelWidth: {
- type: [String, Number],
- default: ''
- },
- // label 居中方式,默认 left 取值 left/center/right
- labelAlign: {
- type: String,
- default: ''
- },
- // 强制显示错误信息
- errorMessage: {
- type: [String, Boolean],
- default: ''
- },
- // 1.4.0 弃用,统一使用 form 的校验时机
- // validateTrigger: {
- // type: String,
- // default: ''
- // },
- // 1.4.0 弃用,统一使用 form 的label 位置
- // labelPosition: {
- // type: String,
- // default: ''
- // },
- // 1.4.0 以下属性已经废弃,请使用 #label 插槽代替
- leftIcon: String,
- iconColor: {
- type: String,
- default: '#606266'
- },
- },
- data() {
- return {
- errMsg: '',
- userRules: null,
- localLabelAlign: 'left',
- localLabelWidth: '65px',
- localLabelPos: 'left',
- border: false,
- isFirstBorder: false,
- };
- },
- computed: {
- // 处理错误信息
- msg() {
- return this.errorMessage || this.errMsg;
- }
- },
- watch: {
- // 规则发生变化通知子组件更新
- 'form.formRules'(val) {
- // TODO 处理头条vue3 watch不生效的问题
- // #ifndef MP-TOUTIAO
- this.init()
- // #endif
- },
- 'form.labelWidth'(val) {
- // 宽度
- this.localLabelWidth = this._labelWidthUnit(val)
- },
- 'form.labelPosition'(val) {
- // 标签位置
- this.localLabelPos = this._labelPosition()
- },
- 'form.labelAlign'(val) {
- }
- },
- created() {
- this.init(true)
- if (this.name && this.form) {
- // TODO 处理头条vue3 watch不生效的问题
- // #ifdef MP-TOUTIAO
- this.$watch('form.formRules', () => {
- this.init()
- })
- // #endif
- // 监听变化
- this.$watch(
- () => {
- const val = this.form._getDataValue(this.name, this.form.localData)
- return val
- },
- (value, oldVal) => {
- const isEqual = this.form._isEqual(value, oldVal)
- // 简单判断前后值的变化,只有发生变化才会发生校验
- // TODO 如果 oldVal = undefined ,那么大概率是源数据里没有值导致 ,这个情况不哦校验 ,可能不严谨 ,需要在做观察
- // fix by mehaotian 暂时取消 && oldVal !== undefined ,如果formData 中不存在,可能会不校验
- if (!isEqual) {
- const val = this.itemSetValue(value)
- this.onFieldChange(val, false)
- }
- }, {
- immediate: false
- }
- );
- }
- },
- // #ifndef VUE3
- destroyed() {
- if (this.__isUnmounted) return
- this.unInit()
- },
- // #endif
- // #ifdef VUE3
- unmounted() {
- this.__isUnmounted = true
- this.unInit()
- },
- // #endif
- methods: {
- /**
- * 外部调用方法
- * 设置规则 ,主要用于小程序自定义检验规则
- * @param {Array} rules 规则源数据
- */
- setRules(rules = null) {
- this.userRules = rules
- this.init(false)
- },
- // 兼容老版本表单组件
- setValue() {
- // console.log('setValue 方法已经弃用,请使用最新版本的 uni-forms 表单组件以及其他关联组件。');
- },
- /**
- * 外部调用方法
- * 校验数据
- * @param {any} value 需要校验的数据
- * @param {boolean} 是否立即校验
- * @return {Array|null} 校验内容
- */
- async onFieldChange(value, formtrigger = true) {
- const {
- formData,
- localData,
- errShowType,
- validateCheck,
- validateTrigger,
- _isRequiredField,
- _realName
- } = this.form
- const name = _realName(this.name)
- if (!value) {
- value = this.form.formData[name]
- }
- // fixd by mehaotian 不在校验前清空信息,解决闪屏的问题
- // this.errMsg = '';
- // fix by mehaotian 解决没有检验规则的情况下,抛出错误的问题
- const ruleLen = this.itemRules.rules && this.itemRules.rules.length
- if (!this.validator || !ruleLen || ruleLen === 0) return;
- // 检验时机
- // let trigger = this.isTrigger(this.itemRules.validateTrigger, this.validateTrigger, validateTrigger);
- const isRequiredField = _isRequiredField(this.itemRules.rules || []);
- let result = null;
- // 只有等于 bind 时 ,才能开启时实校验
- if (validateTrigger === 'bind' || formtrigger) {
- // 校验当前表单项
- result = await this.validator.validateUpdate({
- [name]: value
- },
- formData
- );
- // 判断是否必填,非必填,不填不校验,填写才校验 ,暂时只处理 undefined 和空的情况
- if (!isRequiredField && (value === undefined || value === '')) {
- result = null;
- }
- // 判断错误信息显示类型
- if (result && result.errorMessage) {
- if (errShowType === 'undertext') {
- // 获取错误信息
- this.errMsg = !result ? '' : result.errorMessage;
- }
- if (errShowType === 'toast') {
- uni.showToast({
- title: result.errorMessage || '校验错误',
- icon: 'none'
- });
- }
- if (errShowType === 'modal') {
- uni.showModal({
- title: '提示',
- content: result.errorMessage || '校验错误'
- });
- }
- } else {
- this.errMsg = ''
- }
- // 通知 form 组件更新事件
- validateCheck(result ? result : null)
- } else {
- this.errMsg = ''
- }
- return result ? result : null;
- },
- /**
- * 初始组件数据
- */
- init(type = false) {
- const {
- validator,
- formRules,
- childrens,
- formData,
- localData,
- _realName,
- labelWidth,
- _getDataValue,
- _setDataValue
- } = this.form || {}
- // 对齐方式
- this.localLabelAlign = this._justifyContent()
- // 宽度
- this.localLabelWidth = this._labelWidthUnit(labelWidth)
- // 标签位置
- this.localLabelPos = this._labelPosition()
- // 将需要校验的子组件加入form 队列
- this.form && type && childrens.push(this)
- if (!validator || !formRules) return
- // 判断第一个 item
- if (!this.form.isFirstBorder) {
- this.form.isFirstBorder = true;
- this.isFirstBorder = true;
- }
- // 判断 group 里的第一个 item
- if (this.group) {
- if (!this.group.isFirstBorder) {
- this.group.isFirstBorder = true;
- this.isFirstBorder = true;
- }
- }
- this.border = this.form.border;
- // 获取子域的真实名称
- const name = _realName(this.name)
- const itemRule = this.userRules || this.rules
- if (typeof formRules === 'object' && itemRule) {
- // 子规则替换父规则
- formRules[name] = {
- rules: itemRule
- }
- validator.updateSchema(formRules);
- }
- // 注册校验规则
- const itemRules = formRules[name] || {}
- this.itemRules = itemRules
- // 注册校验函数
- this.validator = validator
- // 默认值赋予
- this.itemSetValue(_getDataValue(this.name, localData))
- },
- unInit() {
- if (this.form) {
- const {
- childrens,
- formData,
- _realName
- } = this.form
- childrens.forEach((item, index) => {
- if (item === this) {
- this.form.childrens.splice(index, 1)
- delete formData[_realName(item.name)]
- }
- })
- }
- },
- // 设置item 的值
- itemSetValue(value) {
- const name = this.form._realName(this.name)
- const rules = this.itemRules.rules || []
- const val = this.form._getValue(name, value, rules)
- this.form._setDataValue(name, this.form.formData, val)
- return val
- },
- /**
- * 移除该表单项的校验结果
- */
- clearValidate() {
- this.errMsg = '';
- },
- // 是否显示星号
- _isRequired() {
- // TODO 不根据规则显示 星号,考虑后续兼容
- // if (this.form) {
- // if (this.form._isRequiredField(this.itemRules.rules || []) && this.required) {
- // return true
- // }
- // return false
- // }
- return this.required
- },
- // 处理对齐方式
- _justifyContent() {
- if (this.form) {
- const {
- labelAlign
- } = this.form
- let labelAli = this.labelAlign ? this.labelAlign : labelAlign;
- if (labelAli === 'left') return 'flex-start';
- if (labelAli === 'center') return 'center';
- if (labelAli === 'right') return 'flex-end';
- }
- return 'flex-start';
- },
- // 处理 label宽度单位 ,继承父元素的值
- _labelWidthUnit(labelWidth) {
- // if (this.form) {
- // const {
- // labelWidth
- // } = this.form
- return this.num2px(this.labelWidth ? this.labelWidth : (labelWidth || (this.label ? 65 : 'auto')))
- // }
- // return '65px'
- },
- // 处理 label 位置
- _labelPosition() {
- if (this.form) return this.form.labelPosition || 'left'
- return 'left'
- },
- /**
- * 触发时机
- * @param {Object} rule 当前规则内时机
- * @param {Object} itemRlue 当前组件时机
- * @param {Object} parentRule 父组件时机
- */
- isTrigger(rule, itemRlue, parentRule) {
- // bind submit
- if (rule === 'submit' || !rule) {
- if (rule === undefined) {
- if (itemRlue !== 'bind') {
- if (!itemRlue) {
- return parentRule === '' ? 'bind' : 'submit';
- }
- return 'submit';
- }
- return 'bind';
- }
- return 'submit';
- }
- return 'bind';
- },
- num2px(num) {
- if (typeof num === 'number') {
- return `${num}px`
- }
- return num
- }
- }
- };
- </script>
- <style lang="scss">
- .uni-forms-item {
- position: relative;
- display: flex;
- /* #ifdef APP-NVUE */
- // 在 nvue 中,使用 margin-bottom error 信息会被隐藏
- padding-bottom: 22px;
- /* #endif */
- /* #ifndef APP-NVUE */
- margin-bottom: 22px;
- /* #endif */
- flex-direction: row;
- &__label {
- display: flex;
- flex-direction: row;
- align-items: center;
- text-align: left;
- font-size: 14px;
- color: #606266;
- height: 36px;
- padding: 0 12px 0 0;
- /* #ifndef APP-NVUE */
- vertical-align: middle;
- flex-shrink: 0;
- /* #endif */
- /* #ifndef APP-NVUE */
- box-sizing: border-box;
- /* #endif */
- &.no-label {
- padding: 0;
- }
- }
- &__content {
- /* #ifndef MP-TOUTIAO */
- // display: flex;
- // align-items: center;
- /* #endif */
- position: relative;
- font-size: 14px;
- flex: 1;
- /* #ifndef APP-NVUE */
- box-sizing: border-box;
- /* #endif */
- flex-direction: row;
- /* #ifndef APP || H5 || MP-WEIXIN || APP-NVUE */
- // TODO 因为小程序平台会多一层标签节点 ,所以需要在多余节点继承当前样式
- &>uni-easyinput,
- &>uni-data-picker {
- width: 100%;
- }
- /* #endif */
- }
- & .uni-forms-item__nuve-content {
- display: flex;
- flex-direction: column;
- flex: 1;
- }
- &__error {
- color: #f56c6c;
- font-size: 12px;
- line-height: 1;
- padding-top: 4px;
- position: absolute;
- /* #ifndef APP-NVUE */
- top: 100%;
- left: 0;
- transition: transform 0.3s;
- transform: translateY(-100%);
- /* #endif */
- /* #ifdef APP-NVUE */
- bottom: 5px;
- /* #endif */
- opacity: 0;
- .error-text {
- // 只有 nvue 下这个样式才生效
- color: #f56c6c;
- font-size: 12px;
- }
- &.msg--active {
- opacity: 1;
- transform: translateY(0%);
- }
- }
- // 位置修饰样式
- &.is-direction-left {
- flex-direction: row;
- }
- &.is-direction-top {
- flex-direction: column;
- .uni-forms-item__label {
- padding: 0 0 8px;
- line-height: 1.5715;
- text-align: left;
- /* #ifndef APP-NVUE */
- white-space: initial;
- /* #endif */
- }
- }
- .is-required {
- // color: $uni-color-error;
- color: #dd524d;
- font-weight: bold;
- }
- }
- .uni-forms-item--border {
- margin-bottom: 0;
- padding: 10px 0;
- // padding-bottom: 0;
- border-top: 1px #eee solid;
- /* #ifndef APP-NVUE */
- .uni-forms-item__content {
- flex-direction: column;
- justify-content: flex-start;
- align-items: flex-start;
- .uni-forms-item__error {
- position: relative;
- top: 5px;
- left: 0;
- padding-top: 0;
- }
- }
- /* #endif */
- /* #ifdef APP-NVUE */
- display: flex;
- flex-direction: column;
- .uni-forms-item__error {
- position: relative;
- top: 0px;
- left: 0;
- padding-top: 0;
- margin-top: 5px;
- }
- /* #endif */
- }
- .is-first-border {
- /* #ifndef APP-NVUE */
- border: none;
- /* #endif */
- /* #ifdef APP-NVUE */
- border-width: 0;
- /* #endif */
- }
- </style>
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