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+<script>
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+import { deepClone } from '@/utils/index'
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+// import render from '@/components/render/render.js'
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+import render from '../render/render.js' // edit by 芋道源码
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+
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+const ruleTrigger = {
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+ 'el-input': 'blur',
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+ 'el-input-number': 'blur',
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+ 'el-select': 'change',
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+ 'el-radio-group': 'change',
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+ 'el-checkbox-group': 'change',
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+ 'el-cascader': 'change',
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+ 'el-time-picker': 'change',
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+ 'el-date-picker': 'change',
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+ 'el-rate': 'change'
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+}
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+
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+const layouts = {
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+ colFormItem(h, scheme) {
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+ const config = scheme.__config__
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+ const listeners = buildListeners.call(this, scheme)
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+
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+ let labelWidth = config.labelWidth ? `${config.labelWidth}px` : null
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+ if (config.showLabel === false) labelWidth = '0'
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+ return (
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+ <el-col span={config.span}>
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+ <el-form-item label-width={labelWidth} prop={scheme.__vModel__}
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+ label={config.showLabel ? config.label : ''}>
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+ <render conf={scheme} on={listeners} />
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+ </el-form-item>
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+ </el-col>
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+ )
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+ },
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+ rowFormItem(h, scheme) {
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+ let child = renderChildren.apply(this, arguments)
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+ if (scheme.type === 'flex') {
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+ child = <el-row type={scheme.type} justify={scheme.justify} align={scheme.align}>
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+ {child}
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+ </el-row>
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+ }
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+ return (
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+ <el-col span={scheme.span}>
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+ <el-row gutter={scheme.gutter}>
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+ {child}
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+ </el-row>
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+ </el-col>
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+ )
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+ }
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+}
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+
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+function renderFrom(h) {
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+ const { formConfCopy } = this
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+
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+ return (
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+ <el-row gutter={formConfCopy.gutter}>
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+ <el-form
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+ size={formConfCopy.size}
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+ label-position={formConfCopy.labelPosition}
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+ disabled={formConfCopy.disabled}
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+ label-width={`${formConfCopy.labelWidth}px`}
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+ ref={formConfCopy.formRef}
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+ // model不能直接赋值 https://github.com/vuejs/jsx/issues/49#issuecomment-472013664
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+ props={{ model: this[formConfCopy.formModel] }}
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+ rules={this[formConfCopy.formRules]}
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+ >
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+ {renderFormItem.call(this, h, formConfCopy.fields)}
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+ {formConfCopy.formBtns && formBtns.call(this, h)}
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+ </el-form>
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+ </el-row>
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+ )
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+}
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+
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+function formBtns(h) {
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+ return <el-col>
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+ <el-form-item size="large">
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+ <el-button type="primary" onClick={this.submitForm}>提交</el-button>
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+ <el-button onClick={this.resetForm}>重置</el-button>
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+ </el-form-item>
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+ </el-col>
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+}
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+
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+function renderFormItem(h, elementList) {
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+ return elementList.map(scheme => {
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+ const config = scheme.__config__
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+ const layout = layouts[config.layout]
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+
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+ if (layout) {
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+ return layout.call(this, h, scheme)
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+ }
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+ throw new Error(`没有与${config.layout}匹配的layout`)
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+ })
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+}
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+
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+function renderChildren(h, scheme) {
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+ const config = scheme.__config__
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+ if (!Array.isArray(config.children)) return null
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+ return renderFormItem.call(this, h, config.children)
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+}
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+
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+function setValue(event, config, scheme) {
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+ this.$set(config, 'defaultValue', event)
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+ this.$set(this[this.formConf.formModel], scheme.__vModel__, event)
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+}
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+
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+function buildListeners(scheme) {
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+ const config = scheme.__config__
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+ const methods = this.formConf.__methods__ || {}
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+ const listeners = {}
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+
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+ // 给__methods__中的方法绑定this和event
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+ Object.keys(methods).forEach(key => {
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+ listeners[key] = event => methods[key].call(this, event)
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+ })
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+ // 响应 render.js 中的 vModel $emit('input', val)
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+ listeners.input = event => setValue.call(this, event, config, scheme)
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+
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+ return listeners
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+}
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+
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+export default {
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+ components: {
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+ render
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+ },
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+ props: {
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+ formConf: {
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+ type: Object,
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+ required: true
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+ }
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+ },
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+ data() {
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+ const data = {
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+ formConfCopy: deepClone(this.formConf),
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+ [this.formConf.formModel]: {},
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+ [this.formConf.formRules]: {}
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+ }
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+ this.initFormData(data.formConfCopy.fields, data[this.formConf.formModel])
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+ this.buildRules(data.formConfCopy.fields, data[this.formConf.formRules])
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+ return data
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+ },
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+ methods: {
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+ initFormData(componentList, formData) {
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+ componentList.forEach(cur => {
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+ const config = cur.__config__
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+ if (cur.__vModel__) formData[cur.__vModel__] = config.defaultValue
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+ // debugger
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+ if (config.children) this.initFormData(config.children, formData)
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+ })
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+ },
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+ buildRules(componentList, rules) {
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+ componentList.forEach(cur => {
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+ const config = cur.__config__
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+ if (Array.isArray(config.regList)) {
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+ if (config.required) {
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+ const required = { required: config.required, message: cur.placeholder }
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+ if (Array.isArray(config.defaultValue)) {
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+ required.type = 'array'
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+ required.message = `请至少选择一个${config.label}`
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+ }
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+ required.message === undefined && (required.message = `${config.label}不能为空`)
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+ config.regList.push(required)
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+ }
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+ rules[cur.__vModel__] = config.regList.map(item => {
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+ item.pattern && (item.pattern = eval(item.pattern))
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+ item.trigger = ruleTrigger && ruleTrigger[config.tag]
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+ return item
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+ })
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+ }
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+ if (config.children) this.buildRules(config.children, rules)
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+ })
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+ },
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+ resetForm() {
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+ this.formConfCopy = deepClone(this.formConf)
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+ this.$refs[this.formConf.formRef].resetFields()
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+ },
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+ submitForm() {
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+ this.$refs[this.formConf.formRef].validate(valid => {
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+ if (!valid) return false
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+ // 触发sumit事件
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+ this.$emit('submit', this[this.formConf.formModel])
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+ return true
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+ })
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+ }
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+ },
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+ render(h) {
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+ return renderFrom.call(this, h)
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+ }
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+}
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+</script>
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