标签：Slack icode9 平台 新项目 应用程序 触发 频道
创建一个空白项目
当你开始一个新项目时，你可以运行slack create命令。在本教程中，您将从头开始构建一个应用程序。所以从列表中选择“空白项目”：
$ slack create
? Select a template to build from:
Hello World
A simple workflow that sends a greeting
Scaffolded project
A solid foundational project that uses a Slack datastore
> Blank project
A, well.. blank project
To see all available samples, visit github.com/slack-samples.
生成项目后，让我们检查slack run命令是否正常运行。此命令将新应用程序的“开发”版本安装到连接的 Slack 工作区中。现在您的应用程序的机器人用户位于工作区中，并且您的应用程序具有用于 API 调用的机器人令牌。
$ cd distracted-bison-253
$ slack run
? Choose a workspace seratch T03E94MJU
App is not installed to this workspace
Updating dev app install for workspace "Acme Corp"
⚠️ Outgoing domains
No allowed outgoing domains are configured
If your function makes network requests, you will need to allow the outgoing domains
Learn more about upcoming changes to outgoing domains: https://api.slack.com/future/changelog
✨ seratch of Acme Corp
Connected, awaiting events
如果您看到Connected, awaiting events日志消息，则应用已成功连接到 Slack。您可以按“Ctrl + C”来终止本地应用程序进程。
定义工作流和触发器
让我们从定义一个简单的演示工作流及其链接触发器开始。一如既往，将源代码保存为workflow_and_trigger.ts：
// ----------------
// Workflow Definition
// ----------------
import { DefineWorkflow, Schema } from "deno-slack-sdk/mod.ts";
export const workflow = DefineWorkflow({
callback_id: "example-workflow",
title: "Example Workflow",
input_parameters: {
properties: {
// All the possible inputs from the "reaction_added" event trigger
channel_id: { type: Schema.slack.types.channel_id },
user_id: { type: Schema.slack.types.user_id },
message_ts: { type: Schema.types.string },
reaction: { type: Schema.types.string },
},
required: ["channel_id", "user_id", "message_ts", "reaction"],
},
});
// TODO: Add function steps here
// ----------------
// Trigger Definition
// ----------------
import { Trigger } from "deno-slack-api/types.ts";
const trigger: Trigger<typeof workflow.definition> = {
type: "event", // Event Trigger
name: "Trigger the example workflow",
workflow: `#/workflows/${workflow.definition.callback_id}`,
event: {
// "reaction_added" event trigger
event_type: "slack#/events/reaction_added",
channel_ids: ["C04FB5UF1C2"], // TODO: Update this list
// The condition to filter events
filter: {
version: 1,
// Start the workflow only when the reaction is :eyes:
root: { statement: "{{data.reaction}} == eyes" },
},
},
inputs: {
channel_id: { value: "{{data.channel_id}}" },
user_id: { value: "{{data.user_id}}" },
message_ts: { value: "{{data.message_ts}}" },
reaction: { value: "{{data.reaction}}" },
},
};
export default trigger;
请注意，触发器event.event_type必须是"slack#/events/reaction_added". 触发器有五个可能的输入值。要了解最新的输入列表，请参阅官方文档页面data上的属性详细信息。
此外，该channel_ids: ["C04DPBYUQUC"], // TODO: Update this list部分需要更新。请注意，您必须选择一个公共（请注意，在撰写本文时，仅支持公共频道）频道来添加此工作流并在 Slack 客户端 UI 中复制其频道 ID。单击频道名称时，将打开一个弹出模式。向下滚动到底部后，您会在那里找到该频道：
然后，将工作流添加到manifest.ts：
import { Manifest } from "deno-slack-sdk/mod.ts";
import { workflow as DemoWorkflow } from "./workflow_and_trigger.ts";
export default Manifest({
name: "distracted-bison-253",
description: "Demo workflow",
icon: "assets/default_new_app_icon.png",
workflows: [DemoWorkflow],
outgoingDomains: [],
botScopes: [
"commands",
"chat:write",
"reactions:read", // required for the "reaction_added" event trigger
"channels:history", // will use in custom functions later
"channels:join", // will use in custom functions later
],
});
请注意，此事件触发器不仅需要添加工作流，还需要添加"reactions:read"范围。botScopes当您在应用程序中使用不同的偶数触发器时，请在此处检查触发器所需的范围。
创建事件触发器
接下来，您将使用两个终端窗口。一个用于slack run命令，另一个用于slack triggers create命令。
要注册工作流，slack run请在第一个终端窗口中运行命令。然后，运行slack triggers create --trigger-def workflow_and_trigger.ts另一个。您将看到以下输出：
$ slack triggers create --trigger-def ./example.ts
? Choose an app seratch (dev) T03E*****
distracted-bison-253 (dev) A04FNE*****
⚡ Trigger created
Trigger ID: Ft04EJ8*****
Trigger Type: event
Trigger Name: Trigger the example workflow