halo/console/docs/extension-points/entity-listitem-operation.md

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# Entity 数据列表操作菜单扩展点
## 原由
目前 Halo 2 的 Console 中,展示数据列表是统一使用 Entity 组件Entity 组件中提供了用于放置操作按钮的插槽,此扩展点用于支持通过插件扩展部分数据列表的操作菜单项。
## 定义方式
目前支持扩展的数据列表:
- 文章:`"post:list-item:operation:create"?: (post: Ref<ListedPost>) => | OperationItem<ListedPost>[] | Promise<OperationItem<ListedPost>[]>`
- 插件:`"plugin:list-item:operation:create"?: (plugin: Ref<Plugin>) => | OperationItem<Plugin>[] | Promise<OperationItem<Plugin>[]>`
- 备份:`"backup:list-item:operation:create"?: (backup: Ref<Backup>) => | OperationItem<Backup>[] | Promise<OperationItem<Backup>[]>`
- 主题:`"theme:list-item:operation:create"?: (theme: Ref<Theme>) => | OperationItem<Theme>[] | Promise<OperationItem<Theme>[]>`
示例:
> 此示例是在文章列表中添加一个`导出为 Markdown 文档`的操作菜单项。
```ts
import type { ListedPost } from "@halo-dev/api-client";
import { VDropdownItem } from "@halo-dev/components";
import { definePlugin } from "@halo-dev/console-shared";
import axios from "axios";
import { markRaw } from "vue";
export default definePlugin({
extensionPoints: {
"post:list-item:operation:create": () => {
return [
{
priority: 21,
component: markRaw(VDropdownItem),
label: "导出为 Markdown 文档",
permissions: [],
action: async (post: ListedPost) => {
const { data } = await axios.get(
`/apis/api.console.halo.run/v1alpha1/posts/${post.post.metadata.name}/head-content`
);
const blob = new Blob([data.raw], {
type: "text/plain;charset=utf-8",
});
const url = window.URL.createObjectURL(blob);
const link = document.createElement("a");
link.href = url;
link.download = `${post.post.spec.title}.md`;
link.click();
},
},
];
},
},
});
```
`OperationItem` 类型:
```ts
export interface OperationItem<T> {
priority: number; // 优先级,越小越靠前
component: Raw<Component>; // 菜单项组件,可以使用 `@halo-dev/components` 中提供的 `VDropdownItem`,也可以自定义
props?: Record<string, unknown>; // 组件的 props
action?: (item?: T) => void; // 点击事件
label?: string; // 菜单项名称
hidden?: boolean; // 是否隐藏
permissions?: string[]; // 权限
children?: OperationItem<T>[]; // 子菜单
}
```