<template>
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<view class="uni-forms-item" :class="{ 'uni-forms-item--border': border, 'is-first-border': border && isFirstBorder, 'uni-forms-item-error': msg }">
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<view class="uni-forms-item__box">
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<view class="uni-forms-item__inner" :class="['is-direction-' + labelPos]">
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<view class="uni-forms-item__label" :style="{ width: labelWid , justifyContent: justifyContent }">
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<slot name="label">
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<text v-if="required" class="is-required">*</text>
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<uni-icons v-if="leftIcon" class="label-icon" size="16" :type="leftIcon" :color="iconColor" />
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<text class="label-text">{{ label }}</text>
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<view v-if="label" class="label-seat"></view>
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</slot>
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</view>
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<view class="uni-forms-item__content" :class="{ 'is-input-error-border': msg }"><slot></slot></view>
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</view>
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<view
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v-if="msg"
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class="uni-error-message"
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:class="{ 'uni-error-msg--boeder': border }"
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:style="{
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paddingLeft: labelLeft
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}"
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>
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<text class="uni-error-message-text">{{ showMsg === 'undertext' ? msg : '' }}</text>
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</view>
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</view>
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</view>
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</template>
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<script>
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/**
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* Field 输入框
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* @description 此组件可以实现表单的输入与校验，包括 "text" 和 "textarea" 类型。
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* @tutorial https://ext.dcloud.net.cn/plugin?id=21001
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* @property {Boolean} required 是否必填，左边显示红色"*"号（默认false）
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* @property {String} validateTrigger = [bind|submit] 校验触发器方式 默认 submit 可选
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* @value bind 发生变化时触发
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* @value submit 提交时触发
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* @property {String } leftIcon label左边的图标，限 uni-ui 的图标名称
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* @property {String } iconColor 左边通过icon配置的图标的颜色（默认#606266）
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* @property {String } label 输入框左边的文字提示
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* @property {Number } labelWidth label的宽度，单位px（默认65）
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* @property {String } labelAlign = [left|center|right] label的文字对齐方式（默认left）
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* @value left label 左侧显示
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* @value center label 居中
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* @value right label 右侧对齐
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* @property {String } labelPosition = [top|left] label的文字的位置（默认left）
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* @value top 顶部显示 label
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* @value left 左侧显示 label
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* @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
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* @property {String } name 表单域的属性名，在使用校验规则时必填
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*/
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export default {
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name: 'uniFormsItem',
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props: {
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// 自定义内容
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custom: {
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type: Boolean,
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default: false
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},
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// 是否显示报错信息
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showMessage: {
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type: Boolean,
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default: true
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},
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name: String,
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required: Boolean,
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validateTrigger: {
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type: String,
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default: ''
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},
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leftIcon: String,
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iconColor: {
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type: String,
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default: '#606266'
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},
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label: String,
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// 左边标题的宽度单位px
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labelWidth: {
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type: [Number, String],
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default: ''
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},
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// 对齐方式，left|center|right
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labelAlign: {
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type: String,
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default: ''
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},
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// lable的位置，可选为 left-左边，top-上边
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labelPosition: {
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type: String,
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default: ''
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},
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errorMessage: {
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type: [String, Boolean],
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default: ''
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},
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// 表单校验规则
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rules: {
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type: Array,
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default() {
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return [];
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}
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}
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},
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data() {
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return {
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errorTop: false,
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errorBottom: false,
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labelMarginBottom: '',
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errorWidth: '',
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errMsg: '',
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val: '',
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labelPos: '',
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labelWid: '',
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labelAli: '',
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showMsg: 'undertext',
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border: false,
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isFirstBorder: false,
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isArray: false,
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arrayField: ''
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};
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},
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computed: {
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msg() {
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return this.errorMessage || this.errMsg;
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},
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fieldStyle() {
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let style = {};
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if (this.labelPos == 'top') {
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style.padding = '0 0';
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this.labelMarginBottom = '6px';
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}
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if (this.labelPos == 'left' && this.msg !== false && this.msg != '') {
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style.paddingBottom = '0px';
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this.errorBottom = true;
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this.errorTop = false;
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} else if (this.labelPos == 'top' && this.msg !== false && this.msg != '') {
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this.errorBottom = false;
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this.errorTop = true;
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} else {
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// style.paddingBottom = ''
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this.errorTop = false;
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this.errorBottom = false;
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}
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return style;
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},
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// uni不支持在computed中写style.justifyContent = 'center'的形式，故用此方法
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justifyContent() {
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if (this.labelAli === 'left') return 'flex-start';
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if (this.labelAli === 'center') return 'center';
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if (this.labelAli === 'right') return 'flex-end';
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},
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labelLeft(){
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return (this.labelPos === 'left' ? parseInt(this.labelWid) : 0) + 'px'
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}
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},
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watch: {
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validateTrigger(trigger) {
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this.formTrigger = trigger;
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}
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},
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created() {
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this.form = this.getForm();
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this.group = this.getForm('uniGroup');
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this.formRules = [];
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this.formTrigger = this.validateTrigger;
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// 处理 name，是否数组
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if (this.name && this.name.indexOf('[') !== -1 && this.name.indexOf(']') !== -1) {
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this.isArray = true;
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this.arrayField = this.name
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// fix by mehaotian 修改不修改的情况，动态值不检验的问题
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this.form.formData[this.name] = this.form._getValue(this.name, '')
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}
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},
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mounted() {
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if (this.form) {
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this.form.childrens.push(this);
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}
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this.init();
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},
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// #ifndef VUE3
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destroyed() {
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if(this.__isUnmounted) return
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this.unInit()
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},
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// #endif
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// #ifdef VUE3
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unmounted(){
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this.__isUnmounted = true
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this.unInit()
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},
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// #endif
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methods: {
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init() {
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if (this.form) {
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let { formRules, validator, formData, value, labelPosition, labelWidth, labelAlign, errShowType } = this.form;
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this.labelPos = this.labelPosition ? this.labelPosition : labelPosition;
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if(this.label){
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this.labelWid = (this.labelWidth ? this.labelWidth : (labelWidth||70))
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}else{
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this.labelWid =( this.labelWidth ? this.labelWidth : (labelWidth||'auto'))
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}
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if(this.labelWid && this.labelWid !=='auto') {
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this.labelWid +='px'
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}
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this.labelAli = this.labelAlign ? this.labelAlign : labelAlign;
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// 判断第一个 item
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if (!this.form.isFirstBorder) {
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this.form.isFirstBorder = true;
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this.isFirstBorder = true;
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}
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// 判断 group 里的第一个 item
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if (this.group) {
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if (!this.group.isFirstBorder) {
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this.group.isFirstBorder = true;
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this.isFirstBorder = true;
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}
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}
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this.border = this.form.border;
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this.showMsg = errShowType;
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let name = this.isArray ? this.arrayField : this.name;
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if(!name) return
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if (formRules && this.rules.length > 0) {
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if (!formRules[name]) {
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formRules[name] = {
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rules: this.rules
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}
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}
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validator.updateSchema(formRules);
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}
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this.formRules = formRules[name] || {};
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this.validator = validator;
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} else {
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this.labelPos = this.labelPosition || 'left';
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this.labelWid = this.labelWidth || 65;
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this.labelAli = this.labelAlign || 'left';
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}
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},
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unInit(){
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if (this.form) {
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this.form.childrens.forEach((item, index) => {
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if (item === this) {
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this.form.childrens.splice(index, 1)
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delete this.form.formData[item.name]
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}
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})
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}
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},
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/**
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* 获取父元素实例
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*/
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getForm(name = 'uniForms') {
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let parent = this.$parent;
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let parentName = parent.$options.name;
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while (parentName !== name) {
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parent = parent.$parent;
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if (!parent) return false;
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parentName = parent.$options.name;
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}
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return parent;
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},
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/**
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* 移除该表单项的校验结果
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*/
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clearValidate() {
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this.errMsg = '';
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},
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/**
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* 子组件调用，如 easyinput
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* @param {Object} value
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*/
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setValue(value) {
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let name = this.isArray ? this.arrayField : this.name;
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if (name) {
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if (this.errMsg) this.errMsg = '';
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// 给组件赋值
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this.form.formData[name] = this.form._getValue(name, value);
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if (!this.formRules || (typeof this.formRules && JSON.stringify(this.formRules) === '{}')) return;
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this.triggerCheck(this.form._getValue(this.name, value));
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}
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},
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/**
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* 校验规则
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* @param {Object} value
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*/
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async triggerCheck(value,formTrigger) {
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let promise = null;
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this.errMsg = '';
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// fix by mehaotian 解决没有检验规则的情况下，抛出错误的问题
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if (!this.validator || Object.keys(this.formRules).length === 0) return;
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const isNoField = this.isRequired(this.formRules.rules || []);
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let isTrigger = this.isTrigger(this.formRules.validateTrigger, this.validateTrigger, this.form.validateTrigger);
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let result = null;
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if (!!isTrigger || formTrigger) {
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let name = this.isArray ? this.arrayField : this.name;
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result = await this.validator.validateUpdate(
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{
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[name]: value
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},
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this.form.formData
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);
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}
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// 判断是否必填,非必填，不填不校验，填写才校验
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if (!isNoField && (value === undefined || value === '')) {
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result = null;
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}
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const inputComp = this.form.inputChildrens.find(child => child.rename === this.name);
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if ((isTrigger || formTrigger) && result && result.errorMessage) {
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if (inputComp) {
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inputComp.errMsg = result.errorMessage;
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}
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if (this.form.errShowType === 'toast') {
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uni.showToast({
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title: result.errorMessage || '校验错误',
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icon: 'none'
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});
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}
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if (this.form.errShowType === 'modal') {
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uni.showModal({
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title: '提示',
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content: result.errorMessage || '校验错误'
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});
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}
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} else {
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if (inputComp) {
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inputComp.errMsg = '';
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}
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}
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this.errMsg = !result ? '' : result.errorMessage;
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// 触发validate事件
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this.form.validateCheck(result ? result : null);
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// typeof callback === 'function' && callback(result ? result : null);
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// if (promise) return promise
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return result ? result : null;
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},
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/**
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* 触发时机
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* @param {Object} event
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*/
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isTrigger(rule, itemRlue, parentRule) {
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let rl = true;
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// bind submit
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if (rule === 'submit' || !rule) {
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if (rule === undefined) {
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if (itemRlue !== 'bind') {
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if (!itemRlue) {
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return parentRule === 'bind' ? true : false;
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}
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return false;
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}
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return true;
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}
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return false;
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}
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return true;
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},
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// 是否有必填字段
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isRequired(rules) {
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let isNoField = false;
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for (let i = 0; i < rules.length; i++) {
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const ruleData = rules[i];
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if (ruleData.required) {
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isNoField = true;
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break;
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}
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}
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return isNoField;
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}
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}
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};
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</script>
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<style lang="scss" >
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.uni-forms-item {
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position: relative;
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padding: 0px;
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text-align: left;
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color: #333;
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font-size: 14px;
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// margin-bottom: 22px;
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}
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.uni-forms-item__box {
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position: relative;
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}
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.uni-forms-item__inner {
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/* #ifndef APP-NVUE */
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display: flex;
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/* #endif */
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// flex-direction: row;
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// align-items: center;
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padding-bottom: 22px;
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// margin-bottom: 22px;
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}
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.is-direction-left {
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flex-direction: row;
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}
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.is-direction-top {
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flex-direction: column;
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}
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.uni-forms-item__label {
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/* #ifndef APP-NVUE */
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display: flex;
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flex-shrink: 0;
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box-sizing: border-box;
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/* #endif */
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flex-direction: row;
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align-items: center;
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width: 65px;
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// line-height: 2;
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// margin-top: 3px;
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padding: 5px 0;
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height: 36px;
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// margin-right: 5px;
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.label-text {
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font-size: 13px;
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color: #666666;
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}
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.label-seat {
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margin-right: 5px;
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}
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}
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.uni-forms-item__content {
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/* #ifndef APP-NVUE */
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width: 100%;
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box-sizing: border-box;
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min-height: 36px;
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/* #endif */
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flex: 1;
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}
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.label-icon {
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margin-right: 5px;
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margin-top: -1px;
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}
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// 必填
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.is-required {
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// color: $uni-color-error;
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color: #dd524d;
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font-weight: bold;
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}
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.uni-error-message {
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position: absolute;
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bottom: 0px;
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left: 0;
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text-align: left;
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}
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.uni-error-message-text {
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line-height: 22px;
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color: #dd524d;
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font-size: 12px;
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}
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.uni-error-msg--boeder {
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position: relative;
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bottom: 0;
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line-height: 22px;
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}
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.is-input-error-border {
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border-color: #dd524d;
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}
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.uni-forms-item--border {
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margin-bottom: 0;
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padding: 10px 0;
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// padding-bottom: 0;
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border-top: 1px #eee solid;
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.uni-forms-item__inner {
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padding: 0;
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}
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}
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.uni-forms-item-error {
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// padding-bottom: 0;
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}
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.is-first-border {
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/* #ifndef APP-NVUE */
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border: none;
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/* #endif */
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/* #ifdef APP-NVUE */
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border-width: 0;
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/* #endif */
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}
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.uni-forms--no-padding {
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padding: 0;
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}
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</style>
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