useCrudSelection

行选择管理：选中集合、跨页选择、批量操作支持。

基本用法

import { useCrudList, useCrudSelection } from '@uozi/vito-core'

const list = useCrudList({ adapter })
const selection = useCrudSelection({
  rows: list.rows,
  getId: row => row.id,
})

selection.toggle(1) // 切换选中
selection.select(2) // 选中
selection.deselect(1) // 取消选中
selection.selectAll() // 全选当前页
selection.clear() // 清空
selection.isSelected(2) // true
selection.selectedCount.value // 1

交互示例

loading

Options

参数	类型	默认值	说明
rows	Ref<Row[]>	—	当前页数据（必填），通常来自 useCrudList().rows
getId	(row: Row) => string | number	row => row.id	从行数据中提取唯一 ID

返回值

State

属性	类型	说明
selectedIds	Ref<Set<string | number>>	选中的 ID 集合
selectedRows	ComputedRef<Row[]>	已选行的缓存快照（跨页保留；在翻页/刷新时会用当前页数据更新对应条目）
selectedCount	ComputedRef<number>	选中行数

Actions

方法	签名	说明
setSelectedIds	(ids: (string | number)[]) => void	替换整个选中集合（UI 适配层使用）
select	(id: string | number) => void	选中一行
deselect	(id: string | number) => void	取消选中
toggle	(id: string | number) => void	切换选中状态
selectAll	() => void	选中当前页所有行
clear	() => void	清空所有选中
isSelected	(id: string | number) => boolean	判断是否选中

行为说明

跨页选择

selectedIds 不会随翻页/刷新自动裁剪，因此可以自然支持“跨页勾选 → 批量操作”。

selectedRows 缓存

selectedRows 维护 id -> row 的缓存：当你在某一页选中行时会缓存该行；后续翻页/刷新时，如果当前页包含已选中的 ID，会用最新的行对象覆盖缓存。\n\n注意：对于不在当前页的数据，selectedRows 可能是较早的快照；如果你需要绝对最新的数据，请以 selectedIds 重新向后端查询。

完整示例

页面

<script setup lang="ts">
import { AutoCrud } from '@uozi/vito-naive-ui'
import { NAlert, NText } from 'naive-ui'
import { ref } from 'vue'
import { createBasicAdapter } from './basic-adapter'
import { demoColumns, demoFields } from './basic-schema'

const { adapter } = createBasicAdapter()
const crudRef = ref<InstanceType<typeof AutoCrud> | null>(null)
</script>

<template>
  <div style="display: flex; flex-direction: column; gap: 12px">
    <NAlert
      :bordered="false"
      type="info"
    >
      <div>
        这是一个最小的 <NText code>
          AutoCrud
        </NText> 示例：搜索（query.search）、分页、排序、表单（Modal）、新增/编辑/删除。
      </div>
    </NAlert>

    <AutoCrud
      ref="crudRef"
      :adapter="adapter"
      :fields="demoFields"
      :columns="demoColumns"
      search-query-key="search"
      form-mode="modal"
      show-selection
      :show-actions-column="true"
    />
  </div>
</template>

Adapter

import type { CrudAdapter, CrudSort, ListResult } from '@uozi/vito-core'
import type { DemoQuery, DemoRow } from './basic-types'

function compare(a: unknown, b: unknown): number {
  if (a === b)
    return 0
  if (a === null || a === undefined)
    return -1
  if (b === null || b === undefined)
    return 1
  if (typeof a === 'number' && typeof b === 'number')
    return a - b
  return String(a).localeCompare(String(b))
}

function sortRows(rows: DemoRow[], sort?: CrudSort | null): DemoRow[] {
  if (!sort)
    return rows
  const dir = sort.order === 'descend' ? -1 : 1
  return rows.slice().sort((ra, rb) => dir * compare((ra as any)[sort.field], (rb as any)[sort.field]))
}

function filterRows(rows: DemoRow[], query: DemoQuery): DemoRow[] {
  const s = query.search ?? {}
  const name = s.name?.trim() ?? null
  const status = s.status ?? null
  return rows.filter((r) => {
    if (name && !r.name.toLowerCase().includes(name.toLowerCase()))
      return false
    if (status && r.status !== status)
      return false
    return true
  })
}

function createSeed(): DemoRow[] {
  const now = Date.now()
  return [
    { id: 1, name: '示例 1', status: 'enabled', amount: 12.3, createdAt: now - 3600_000 },
    { id: 2, name: '示例 2', status: 'draft', amount: 45.6, createdAt: now - 7200_000 },
    { id: 3, name: '示例 3', status: 'disabled', amount: 78.9, createdAt: now - 10800_000 },
  ]
}

export function createBasicAdapter(initial?: DemoRow[]): {
  adapter: CrudAdapter<DemoRow, DemoQuery>
  reset: (next?: DemoRow[]) => void
  getAll: () => DemoRow[]
} {
  let db = (initial ?? createSeed()).slice()
  let idSeq = db.reduce((m, r) => Math.max(m, r.id), 0) + 1

  function getAll() {
    return db.slice()
  }

  function reset(next?: DemoRow[]) {
    db = (next ?? createSeed()).slice()
    idSeq = db.reduce((m, r) => Math.max(m, r.id), 0) + 1
  }

  const adapter: CrudAdapter<DemoRow, DemoQuery> = {
    getId(row) {
      return row.id
    },
    async list(params): Promise<ListResult<DemoRow>> {
      const filtered = filterRows(db, params.query)
      const sorted = sortRows(filtered, params.sort)
      const page = Math.max(1, params.page)
      const pageSize = Math.max(1, params.pageSize)
      const start = (page - 1) * pageSize
      return {
        items: sorted.slice(start, start + pageSize),
        total: sorted.length,
      }
    },
    async create(data): Promise<DemoRow> {
      const row: DemoRow = {
        id: idSeq++,
        name: String((data as any)?.name ?? ''),
        status: ((data as any)?.status ?? 'draft') as DemoRow['status'],
        amount: Number((data as any)?.amount ?? 0),
        createdAt: Date.now(),
      }
      db = [row, ...db]
      return row
    },
    async update(id, data): Promise<DemoRow> {
      const idx = db.findIndex(r => r.id === id)
      if (idx < 0)
        throw new Error(`记录不存在：${id}`)
      const next: DemoRow = { ...db[idx], ...(data as any), id: db[idx].id }
      db = db.slice()
      db[idx] = next
      return next
    },
    async remove(id): Promise<void> {
      db = db.filter(r => r.id !== id)
    },
  }

  return { adapter, reset, getAll }
}

类型定义

export interface DemoRow {
  id: number
  name: string
  status: 'draft' | 'enabled' | 'disabled'
  amount: number
  createdAt: number
}

export interface DemoQuery {
  search?: {
    name?: string | null
    status?: DemoRow['status'] | null
  }
}