<template>  
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    <uvForm  
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        ref="uForm"  
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        :model="model"  
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        :rules="rules"  
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        :errorType="errorType"  
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        :borderBottom="borderBottom"  
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        :labelPosition="labelPosition"  
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        :labelWidth="labelWidth"  
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        :labelAlign="labelAlign"  
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        :labelStyle="labelStyle"  
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        :customStyle="customStyle"  
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    >  
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        <slot />  
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    </uvForm>  
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</template>  
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<script>  
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    /**  
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     * 此组件存在的理由是,在nvue下,u-form被uni-app官方占用了,u-form在nvue中相当于form组件  
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     * 所以在nvue下,取名为u--form,内部其实还是u-form.vue,只不过做一层中转  
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     */  
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    import uvForm from '../u-form/u-form.vue';  
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    import props from '../u-form/props.js' 
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    export default {  
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        // #ifdef MP-WEIXIN  
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        name: 'u-form',  
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        // #endif  
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        // #ifndef MP-WEIXIN  
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        name: 'u--form',  
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        // #endif  
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        mixins: [uni.$u.mpMixin, props, uni.$u.mixin],  
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        components: {  
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            uvForm  
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        },  
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        created() {  
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            this.children = []  
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        },  
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        methods: { 
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            // 手动设置校验的规则,如果规则中有函数的话,微信小程序中会过滤掉,所以只能手动调用设置规则 
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            setRules(rules) { 
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                this.$refs.uForm.setRules(rules) 
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            },  
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            validate() {  
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                /**  
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                 * 在微信小程序中,通过this.$parent拿到的父组件是u--form,而不是其内嵌的u-form  
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                 * 导致在u-form组件中,拿不到对应的children数组,从而校验无效,所以这里每次调用u-form组件中的  
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                 * 对应方法的时候,在小程序中都先将u--form的children赋值给u-form中的children  
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                 */  
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                // #ifdef MP-WEIXIN  
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                this.setMpData()  
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                // #endif  
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                return this.$refs.uForm.validate()  
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            },  
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            validateField(value, callback, event) {  
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                // #ifdef MP-WEIXIN  
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                this.setMpData()  
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                // #endif  
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                return this.$refs.uForm.validateField(value, callback, event)  
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            },  
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            resetFields() {  
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                // #ifdef MP-WEIXIN  
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                this.setMpData()  
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                // #endif  
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                return this.$refs.uForm.resetFields()  
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            },  
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            clearValidate(props) {  
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                // #ifdef MP-WEIXIN  
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                this.setMpData()  
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                // #endif  
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                return this.$refs.uForm.clearValidate(props)  
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            },  
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            setMpData() {  
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                this.$refs.uForm.children = this.children  
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            }  
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        },  
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    }  
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</script>  
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