初始化 form 动态表单的详情，暂未接入数据

yudao-admin-ui/src/utils/parser/Parser.vue

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