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<template>
<view class="uni-forms-item" :class="{'uni-forms-item--border':border,'is-first-border':border&&isFirstBorder,'uni-forms-item-error':msg}">
<view class="uni-forms-item__box">
<view class="uni-forms-item__inner" :class="['is-direction-'+labelPos,]">
<view v-if="label" class="uni-forms-item__label" :style="{width:labelWid+'px',justifyContent: justifyContent}">
<slot name="left">
<uni-icons v-if="leftIcon" class="label-icon" size="16" :type="leftIcon" :color="iconColor" />
<text class="label-text">{{label}}</text>
<text v-if="required" class="is-required">*</text>
</slot>
</view>
<view class="uni-forms-item__content" :class="{'is-input-error-border': msg}">
<slot></slot>
</view>
</view>
<view v-if="msg" class="uni-error-message" :class="{'uni-error-msg--boeder':border}" :style="{
paddingLeft: (labelPos === 'left'? Number(labelWid)+5:5) + 'px'
}"><text class="uni-error-message-text">{{ showMsg === 'undertext' ? msg:'' }}</text></view>
</view>
</view>
</template>
<script>
/**
* FormsItem 表单子组件
* @description 此组件可以实现表单的输入与校验,包括 "text" 和 "textarea" 类型。
* @tutorial https://ext.dcloud.net.cn/plugin?id=2773
* @property {String} name 表单域的属性名,在使用校验规则时必填
* @property {Boolean} required 左边显示红色"*"号,样式显示不会对校验规则产生效果(默认 false)
* @property {String} validate-trigger = [bind|submit] 表单校验时机(默认 submit)
* @value bind 数据发生变化时触发
* @value submit 提交表单是触发
* @property {String} left-icon label左边的图标,限uni-ui的图标名称
* @property {String} icon-color 左边通过icon配置的图标的颜色 (默认 #606266)
* @property {String} label 输入框左边的文字提示
* @property {Number} label-width label的宽度,单位px
* @property {String} label-align = [left|center|right] label的文字对齐方式(默认 left)
* @value left 左对齐
* @value center 居中对齐
* @value right 右对齐
* @property {String} label-position = [top|left] label的文字的位置(默认 left)
* @value top 顶部显示 label
* @value left 左侧显示 label
* @property {String} error-message 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
*/
export default {
name: "uniFormsItem",
props: {
// 自定义内容
custom: {
type: Boolean,
default: false
},
// 是否显示报错信息
showMessage: {
type: Boolean,
default: true
},
name: String,
required: Boolean,
validateTrigger: {
type: String,
default: ''
},
leftIcon: String,
iconColor: {
type: String,
default: '#606266'
},
label: String,
// 左边标题的宽度单位px
labelWidth: {
type: [Number, String],
default: ''
},
// 对齐方式,left|center|right
labelAlign: {
type: String,
default: ''
},
// lable的位置,可选为 left-左边,top-上边
labelPosition: {
type: String,
default: ''
},
errorMessage: {
type: [String, Boolean],
default: ''
}
},
data() {
return {
errorTop: false,
errorBottom: false,
labelMarginBottom: '',
errorWidth: '',
errMsg: '',
val: '',
labelPos: '',
labelWid: '',
labelAli: '',
showMsg: 'undertext',
border: false,
isFirstBorder: false
};
},
computed: {
msg() {
return this.errorMessage || this.errMsg;
},
fieldStyle() {
let style = {}
if (this.labelPos == 'top') {
style.padding = '0 0'
this.labelMarginBottom = '6px'
}
if (this.labelPos == 'left' && this.msg !== false && this.msg != '') {
style.paddingBottom = '0px'
this.errorBottom = true
this.errorTop = false
} else if (this.labelPos == 'top' && this.msg !== false && this.msg != '') {
this.errorBottom = false
this.errorTop = true
} else {
// style.paddingBottom = ''
this.errorTop = false
this.errorBottom = false
}
return style
},
// uni不支持在computed中写style.justifyContent = 'center'的形式,故用此方法
justifyContent() {
if (this.labelAli === 'left') return 'flex-start';
if (this.labelAli === 'center') return 'center';
if (this.labelAli === 'right') return 'flex-end';
}
},
watch: {
validateTrigger(trigger) {
this.formTrigger = trigger
}
},
created() {
this.form = this.getForm()
this.group = this.getForm('uniGroup')
this.formRules = []
this.formTrigger = this.validateTrigger
if (this.form) {
this.form.childrens.push(this)
}
this.init()
},
destroyed() {
if (this.form) {
this.form.childrens.forEach((item, index) => {
if (item === this) {
this.form.childrens.splice(index, 1)
delete this.form.formData[item.name]
}
})
}
},
methods: {
init() {
if (this.form) {
let {
formRules,
validator,
formData,
value,
labelPosition,
labelWidth,
labelAlign,
errShowType
} = this.form
this.labelPos = this.labelPosition ? this.labelPosition : labelPosition
this.labelWid = this.label ? (this.labelWidth ? this.labelWidth : labelWidth) : 0
this.labelAli = this.labelAlign ? this.labelAlign : labelAlign
// 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
this.showMsg = errShowType
if (formRules) {
this.formRules = formRules[this.name] || {}
}
this.validator = validator
} else {
this.labelPos = this.labelPosition || 'left'
this.labelWid = this.labelWidth || 65
this.labelAli = this.labelAlign || 'left'
}
},
/**
* 获取父元素实例
*/
getForm(name = 'uniForms') {
let parent = this.$parent;
let parentName = parent.$options.name;
while (parentName !== name) {
parent = parent.$parent;
if (!parent) return false
parentName = parent.$options.name;
}
return parent;
},
/**
* 移除该表单项的校验结果
*/
clearValidate() {
this.errMsg = ''
},
setValue(value) {
if (this.name) {
if (this.errMsg) this.errMsg = ''
this.form.formData[this.name] = this.form._getValue(this.name, value)
if (!this.formRules || (typeof(this.formRules) && JSON.stringify(this.formRules) === '{}')) return
this.triggerCheck(this.form._getValue(this.name, value))
}
},
/**
* 校验规则
* @param {Object} value
*/
async triggerCheck(value, callback) {
let promise = null;
this.errMsg = ''
// if no callback, return promise
// if (callback && typeof callback !== 'function' && Promise) {
// promise = new Promise((resolve, reject) => {
// callback = function(valid) {
// !valid ? resolve(valid) : reject(valid)
// };
// });
// }
// if (!this.validator) {
// typeof callback === 'function' && callback(null);
// if (promise) return promise
// }
if (!this.validator) return
const isNoField = this.isRequired(this.formRules.rules || [])
let isTrigger = this.isTrigger(this.formRules.validateTrigger, this.validateTrigger, this.form.validateTrigger)
let result = null
if (!(!isTrigger)) {
result = await this.validator.validateUpdate({
[this.name]: value
}, this.form.formData)
}
// 判断是否必填,非必填,不填不校验,填写才校验
if (!isNoField && (value === undefined || value === '')) {
result = null
}
if (isTrigger && result && result.errorMessage) {
const inputComp = this.form.inputChildrens.find(child => child.rename === this.name)
if (inputComp) {
inputComp.errMsg = result.errorMessage
}
if (this.form.errShowType === 'toast') {
uni.showToast({
title: result.errorMessage || '校验错误',
icon: 'none'
})
}
if (this.form.errShowType === 'modal') {
uni.showModal({
title: '提示',
content: result.errorMessage || '校验错误'
})
}
}
this.errMsg = !result ? '' : result.errorMessage
// 触发validate事件
this.form.validateCheck(result ? result : null)
// typeof callback === 'function' && callback(result ? result : null);
// if (promise) return promise
},
/**
* 触发时机
* @param {Object} event
*/
isTrigger(rule, itemRlue, parentRule) {
let rl = true;
// bind submit
if (rule === 'submit' || !rule) {
if (rule === undefined) {
if (itemRlue !== 'bind') {
if (!itemRlue) {
return parentRule === 'bind' ? true : false
}
return false
}
return true
}
return false
}
return true;
},
// 是否有必填字段
isRequired(rules) {
let isNoField = false
for (let i = 0; i < rules.length; i++) {
const ruleData = rules[i]
if (ruleData.required) {
isNoField = true
break
}
}
return isNoField
}
}
};
</script>
<style scoped>
.uni-forms-item {
position: relative;
padding: 0px;
text-align: left;
color: #333;
font-size: 14px;
}
.uni-forms-item__box {
position: relative;
}
.uni-forms-item__inner {
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
padding-bottom: 22px;
}
.is-direction-left {
flex-direction: row;
}
.is-direction-top {
flex-direction: column;
}
.uni-forms-item__label {
/* #ifndef APP-NVUE */
display: flex;
flex-shrink: 0;
box-sizing: border-box;
/* #endif */
flex-direction: row;
align-items: center;
width: 65px;
padding: 5px 0;
height: 36px;
margin-right: 5px;
}
.uni-forms-item__label .label-text {
font-size: 14px;
color: #333;
}
.uni-forms-item__content {
/* #ifndef APP-NVUE */
width: 100%;
box-sizing: border-box;
min-height: 36px;
/* #endif */
flex: 1;
}
.label-icon {
margin-right: 5px;
margin-top: -1px;
}
.is-required {
color: #dd524d;
}
.uni-error-message {
position: absolute;
bottom: 0px;
left: 0;
text-align: left;
}
.uni-error-message-text {
line-height: 22px;
color: #dd524d;
font-size: 12px;
}
.uni-error-msg--boeder {
position: relative;
bottom: 0;
line-height: 22px;
}
.is-input-error-border {
border-color: #dd524d;
}
.uni-forms-item--border {
margin-bottom: 0;
padding: 10px 0;
border-top: 1px #eee solid;
}
.uni-forms-item--border .uni-forms-item__inner {
padding: 0;
}
.uni-forms-item-error {
padding-bottom: 0;
}
.is-first-border {
/* #ifndef APP-NVUE */
border: none;
/* #endif */
/* #ifdef APP-NVUE */
border-width: 0;
/* #endif */
}
</style>