sysmgr-admin/src/components/ty-form.vue

<template>
  <el-form ref="formRef" :inline="inline" :model="modelValue" :rules="rules" :label-width="inline ? 'auto' : '90px'">
    <el-form-item
      v-for="(prop, key) in visibleProperties"
      :key="key"
      :label="prop.title ?? key"
      :prop="key"
    >
      <el-select
        v-if="prop.enum"
        v-model="modelValue[key]"
        :placeholder="prop.placeholder ?? '请选择'"
        :clearable="!isRequired(key)"
        :disabled="isReadonly(key, prop)"
        :style="widgetStyle(prop)"
      >
        <el-option
          v-for="(v, i) in prop.enum"
          :key="String(v)"
          :label="prop.enumNames?.[i] ?? String(v)"
          :value="v"
        />
      </el-select>

      <el-switch v-else-if="prop.type === 'boolean'" v-model="modelValue[key]" :disabled="isReadonly(key, prop)" />

      <el-input-number
        v-else-if="prop.type === 'integer' || prop.type === 'number'"
        v-model="modelValue[key]"
        :min="prop.minimum"
        :max="prop.maximum"
        :disabled="isReadonly(key, prop)"
        :style="widgetStyle(prop)"
      />

      <el-input
        v-else-if="prop.format === 'password'"
        v-model="modelValue[key]"
        type="password"
        show-password
        :placeholder="prop.placeholder"
        :disabled="isReadonly(key, prop)"
        :style="widgetStyle(prop)"
      />

      <el-input
        v-else-if="prop.format === 'textarea'"
        v-model="modelValue[key]"
        type="textarea"
        :placeholder="prop.placeholder"
        :disabled="isReadonly(key, prop)"
        :style="widgetStyle(prop)"
      />

      <el-input
        v-else
        v-model="modelValue[key]"
        :placeholder="prop.placeholder"
        :disabled="isReadonly(key, prop)"
        :style="widgetStyle(prop)"
      />
    </el-form-item>

    <slot />
  </el-form>
</template>

<script setup lang="ts">
import { computed, ref } from 'vue'
import type { FormInstance, FormRules } from 'element-plus'
import type { JsonSchema, JsonSchemaProperty } from '@/types/crud'

defineOptions({ name: 'TyForm' })

const props = withDefaults(
  defineProps<{
    /** 表单 JSON Schema。 */
    schema: JsonSchema
    /** 表单数据（就地绑定，会直接修改传入对象）。 */
    modelValue: Record<string, any>
    /** 是否行内布局（用于搜索）。 */
    inline?: boolean
    /** 表单模式（create/edit），用于 showOn 字段过滤。 */
    mode?: 'create' | 'edit'
    /** 强制只读的字段名（如编辑模式下的 username）。 */
    readonlyKeys?: string[]
  }>(),
  {
    inline: false,
    mode: undefined,
    readonlyKeys: () => [],
  },
)

const formRef = ref<FormInstance>()

/** 按 mode 过滤 showOn 字段。 */
const visibleProperties = computed(() => {
  const result: Record<string, JsonSchemaProperty> = {}
  for (const [key, prop] of Object.entries(props.schema.properties)) {
    if (!props.mode || !prop.showOn || prop.showOn.includes(props.mode)) {
      result[key] = prop
    }
  }
  return result
})

const rules = computed<FormRules>(() => {
  const result: FormRules = {}
  for (const [key, prop] of Object.entries(props.schema.properties)) {
    const itemRules: Record<string, unknown>[] = []
    if (props.schema.required?.includes(key)) {
      itemRules.push({ required: true, message: `${prop.title ?? key}不能为空`, trigger: 'blur' })
    }
    if (prop.minLength) {
      itemRules.push({ min: prop.minLength, message: `长度不能少于 ${prop.minLength} 位`, trigger: 'blur' })
    }
    if (prop.format === 'email') {
      itemRules.push({ type: 'email', message: '邮箱格式不正确', trigger: 'blur' })
    }
    if (itemRules.length) result[key] = itemRules
  }
  return result
})

function isRequired(key: string): boolean {
  return props.schema.required?.includes(key) ?? false
}

function isReadonly(key: string, prop: { readOnly?: boolean }): boolean {
  return prop.readOnly === true || props.readonlyKeys.includes(key)
}

function widgetStyle(prop: JsonSchemaProperty): Record<string, string> {
  return { width: prop.width ?? (props.inline ? '200px' : '100%') }
}

defineExpose({
  validate: () => formRef.value?.validate(),
  resetFields: () => formRef.value?.resetFields(),
  clearValidate: () => formRef.value?.clearValidate(),
})
</script>