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---
title: 应用程序配置
description: 使用 defineApplication 声明应用的身份、默认角色、变量和应用市场元数据。
icon: rocket
---
每个应用必须且只能有一个 `defineApplication` 调用。 它声明:
* **应用的身份** — 通用标识符、显示名称、描述。
* **权限** — 其逻辑函数和前端组件在何种角色下运行。
* **变量**(可选)— 以环境变量形式暴露给代码的键值对。
* **安装前/安装后/卸载函数**(可选)— 参见 [逻辑函数](/l/zh/developers/extend/apps/logic/logic-functions)。
```ts src/application-config.ts
import { defineApplication } from 'twenty-sdk/define';
export default defineApplication({
universalIdentifier: '39783023-bcac-41e3-b0d2-ff1944d8465d',
displayName: 'My Twenty App',
description: 'My first Twenty app',
applicationVariables: {
DEFAULT_RECIPIENT_NAME: {
universalIdentifier: '19e94e59-d4fe-4251-8981-b96d0a9f74de',
description: 'Default recipient name for postcards',
value: 'Jane Doe',
isSecret: false,
},
},
});
```
备注:
* `universalIdentifier` 字段是你拥有的确定性 ID。 只需生成一次,并在多次同步过程中保持稳定不变。
* `applicationVariables` 会变成你的函数和前端组件可用的环境变量。 在逻辑函数(服务端)中,可以通过 `process.env.VARIABLE_NAME` 使用它们。 在前端组件中,使用 `twenty-sdk/front-component` 中的 `getApplicationVariable('VARIABLE_NAME')`。 标记为 `isSecret: true` 的变量只会注入到逻辑函数中。 前端组件只会接收非机密变量。
* 默认角色会根据使用 [`defineApplicationRole()`](/l/zh/developers/extend/apps/config/roles) 标记的角色文件自动检测——你不需要在 `defineApplication()` 中引用它。
* 在构建清单时会自动检测安装前、安装后和卸载函数——无需在 `defineApplication()` 中引用它们。
* 显式传递 `defaultRoleUniversalIdentifier` 仍然受支持以保持向后兼容性,但已弃用,推荐改用 `defineApplicationRole()`。
* `serverVariables` 是实例级的配置和机密信息(例如 API 密钥)。 与 `applicationVariables` 不同,它们不会在 manifest 中声明具体值——工作区运维人员会在应用设置中填写这些值,并且它们只有在被设置后才会被注入到逻辑函数中。
* 两种类型的变量都可以接受 `isDeprecated: true`。 使用它来停用变量而不是删除它:保留已声明的键可以保留存储的值(删除它会销毁操作员输入的值),并且变量仍然会被注入,所以你的代码仍然可以回退到它 — `process.env.NEW_API_KEY ?? process.env.API_KEY`。 一旦弃用变量没有任何值,它就会从应用的设置中消失,并且永远不会计入应用的配置检查中,因此 `isDeprecated` 的优先级高于 `isRequired`。
* 要在应用的 **Settings** 选项卡中渲染自定义配置界面(替换默认的变量配置部分),请在其独立文件中使用 [`defineSettingsFrontComponent()`](/l/zh/developers/extend/apps/layout/front-components#custom-settings-component) 声明一个前端组件。 每个应用只允许有一个。 系统管理的部分(自动升级、App URL、连接)将始终保持可见。
## 变量类型
`applicationVariables` 和 `serverVariables` 都接受一个可选的 `type`(且对于 `SELECT` / `MULTI_SELECT`,还可以接受一个 `options` 列表)。 支持的类型:`TEXT`(默认)、`BOOLEAN`、`NUMBER`、`NUMERIC`、`DATE`、`DATE_TIME`、`SELECT`、`MULTI_SELECT`、`ARRAY`、`RAW_JSON`、`RICH_TEXT`。
```ts src/application-config.ts
import { defineApplication, FieldType } from 'twenty-sdk/define';
export default defineApplication({
// ...identity, role...
applicationVariables: {
MAX_POSTCARDS: {
universalIdentifier: '5f4497e4-9030-4085-85eb-2c48b8d53713',
description: 'Maximum postcards per batch',
type: FieldType.NUMBER,
value: 10,
},
DEFAULT_REGION: {
universalIdentifier: '76c5c321-b6b6-46eb-b4fc-f9f04bb04227',
description: 'Default shipping region',
type: FieldType.SELECT,
options: [
{ label: 'Europe', value: 'eu' },
{ label: 'United States', value: 'us' },
],
value: 'eu',
},
},
});
```
`type` 只影响**展示和校验**——它会在工作区设置界面中选择匹配的输入控件(开关、数字字段、下拉框、日期选择器、JSON 编辑器等)。 并让构建过程校验你的配置(例如,`SELECT` / `MULTI_SELECT` 必须声明非空的 `options`)。 它**不会**改变该值到达你代码的方式。
值**始终以字符串注入**——这是环境变量固有的特性(`process.env.*` 只能是字符串)。 当你的逻辑函数运行时,执行器会在构建 `process.env` 时按声明的 `type` 序列化每个值,因此无论该值是如何设置的(清单默认值、设置界面或先前的版本),字符串格式都是一致的:
| 类型 | `process.env` 字符串 |
| ---------------------------------- | --------------------------------- |
| `TEXT`、`SELECT`、`DATE`、`DATE_TIME` | 原始值(`"eu"`、`"2026-01-01"`) |
| `BOOLEAN` | `"true"` / `"false"` |
| `NUMBER`、`NUMERIC` | 十进制字符串(`"10"`、`"2.5"`) |
| `MULTI_SELECT`、`ARRAY` | JSON 数组(`'["email","postcard"]'`) |
| `RAW_JSON`、`RICH_TEXT` | JSON 对象(`'{"retries":3}'`) |
将该字符串再解析回你所期望的类型:
```ts
const maxCards = Number(process.env.MAX_POSTCARDS); // "10" -> 10
const enabled = process.env.ENABLE_TRACKING === 'true'; // "true" -> true
const channels = JSON.parse(process.env.ENABLED_CHANNELS ?? '[]'); // '["email"]' -> ["email"]
const config = JSON.parse(process.env.PROVIDER_CONFIG ?? '{}'); // '{"retries":3}' -> { retries: 3 }
```
同样适用于通过 `getApplicationVariable('VARIABLE_NAME')` 读取值的前端组件——返回值是字符串;按需进行解析。
## 默认函数角色
使用 [`defineApplicationRole()`](/l/zh/developers/extend/apps/config/roles) 声明的角色控制应用的逻辑函数和前端组件可以访问的内容:
* 注入到您的逻辑函数中的运行时令牌来源于该角色。 以某个人的身份执行的调用会进一步受限于该人能够执行的操作,因此其权限永远不会超过两者中的任一方。 请参阅[调用使用谁的访问权限](/l/zh/developers/extend/apps/logic/logic-functions#whose-access-a-call-uses)。
* 类型化 API 客户端将受限于授予该角色的权限。
* 遵循最小权限原则:只声明你的函数所需的权限。
当你使用脚手架创建新应用时,CLI 会在 `src/roles/default-role.ts` 中创建一个入门角色文件。 完整参考请参见 [角色与权限](/l/zh/developers/extend/apps/config/roles)。
## 应用市场元数据
如果你计划[发布你的应用](/l/zh/developers/extend/apps/operations/publishing),这些可选字段将控制你的应用在应用市场中的展示:
| 字段 | 描述 |
| ------------------ | -------------------------------------------------------------- |
| `作者` | 作者或公司名称 |
| `类别` | 用于应用市场筛选的应用类别 |
| `logo` | 捆绑在`public/`中的应用徽标的路径(例如`public/logo.png`) |
| `galleryImages` | 在`public/`中捆绑的相册图像路径数组(例如`public/screenshot-1.png`) |
| `aboutDescription` | 用于“关于”选项卡的更长的 Markdown 描述。 如果省略,市场将使用该软件包在 npm 上的 `README.md`。 |
| `websiteUrl` | 你的网站链接 |
| `termsUrl` | 服务条款链接 |
| `emailSupport` | 支持电子邮件地址 |
| `issueReportUrl` | 问题跟踪器链接 |
<Note>
`logoUrl`和`screshots`被废弃的 `logo` 和 `GalleryImages` 的别名。 这些字段不支持外部绝对链接 (`http://` 或 `https://`) 。它们会在构建时被丢弃,并附有警告。 将图像捆绑在你的应用的 "public/" 文件夹中。
</Note>