← Slack + Trello integrations

Add Attachment to Card via URL with Trello API on New Message In Channels (Instant) from Slack API

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Trigger workflow on
New Message In Channels (Instant) from the Slack API
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Add Attachment to Card via URL with the Trello API
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Getting Started

This integration creates a workflow with a Slack trigger and Trello action. When you configure and deploy the workflow, it will run on Pipedream's servers 24x7 for free.

  1. Select this integration
  2. Configure the New Message In Channels (Instant) trigger
    1. Connect your Slack account
    2. Optional- Select one or more Channels
    3. Configure slackApphook
    4. Configure Resolve names
    5. Configure Ignore bots
  3. Configure the Add Attachment to Card via URL action
    1. Connect your Trello account
    2. Optional- Configure Name
    3. Optional- Configure MIME Type
    4. Configure File URL
    5. Configure ID
  4. Deploy the workflow
  5. Send a test event to validate your setup
  6. Turn on the trigger

Details

This integration uses pre-built, open source components from Pipedream's GitHub repo. These components are developed by Pipedream and the community, and verified and maintained by Pipedream.

To contribute an update to an existing component or create a new component, create a PR on GitHub. If you're new to Pipedream component development, you can start with quickstarts for trigger span and action development, and then review the component API reference.

Trigger

Description:Emit new event when a new message is posted to one or more channels
Version:1.0.0
Key:slack-new-message-in-channels

Trigger Code

import common from "../common/base.mjs";

export default {
  ...common,
  key: "slack-new-message-in-channels",
  name: "New Message In Channels (Instant)",
  version: "1.0.0",
  description: "Emit new event when a new message is posted to one or more channels",
  type: "source",
  dedupe: "unique",
  props: {
    ...common.props,
    conversations: {
      propDefinition: [
        common.props.slack,
        "conversation",
      ],
      type: "string[]",
      label: "Channels",
      description: "Select one or more channels to monitor for new messages.",
      optional: true,
    },
    // eslint-disable-next-line pipedream/props-description,pipedream/props-label
    slackApphook: {
      type: "$.interface.apphook",
      appProp: "slack",
      async eventNames() {
        return this.conversations || [
          "message",
        ];
      },
    },
    resolveNames: {
      propDefinition: [
        common.props.slack,
        "resolveNames",
      ],
    },
    ignoreBot: {
      propDefinition: [
        common.props.slack,
        "ignoreBot",
      ],
    },
  },
  methods: {
    ...common.methods,
    getSummary() {
      return "New message in channel";
    },
    async processEvent(event) {
      if (event.type !== "message") {
        console.log(`Ignoring event with unexpected type "${event.type}"`);
        return;
      }
      if (event.subtype != null && event.subtype != "bot_message" && event.subtype != "file_share") {
        // This source is designed to just emit an event for each new message received.
        // Due to inconsistencies with the shape of message_changed and message_deleted
        // events, we are ignoring them for now. If you want to handle these types of
        // events, feel free to change this code!!
        console.log("Ignoring message with subtype.");
        return;
      }
      if ((this.ignoreBot) && (event.subtype == "bot_message" || event.bot_id)) {
        return;
      }
      if (this.resolveNames) {
        if (event.user) {
          event.user_id = event.user;
          event.user = await this.getUserName(event.user);
        } else if (event.bot_id) {
          event.bot = await this.getBotName(event.bot_id);
        }
        event.channel_id = event.channel;
        event.channel = await this.getConversationName(event.channel);
        if (event.team) {
          event.team_id = event.team;
          event.team = await this.getTeamName(event.team);
        }
      }
      return event;
    },
  },
};

Trigger Configuration

This component may be configured based on the props defined in the component code. Pipedream automatically prompts for input values in the UI and CLI.
LabelPropTypeDescription
SlackslackappThis component uses the Slack app.
N/AnameCache$.service.dbThis component uses $.service.db to maintain state between component invocations.
Channelsconversationsstring[]Select a value from the drop down menu.
slackApphook$.interface.apphook
Resolve namesresolveNamesboolean

Resolve user and channel names (incurs extra API calls)

Ignore botsignoreBotboolean

Ignore messages from bots

Trigger Authentication

Slack uses OAuth authentication. When you connect your Slack account, Pipedream will open a popup window where you can sign into Slack and grant Pipedream permission to connect to your account. Pipedream securely stores and automatically refreshes the OAuth tokens so you can easily authenticate any Slack API.

Pipedream requests the following authorization scopes when you connect your account:

bookmarks:writecalls:readcalls:writechannels:historychannels:readchannels:writednd:readdnd:writeemoji:readfiles:readgroups:historygroups:readgroups:writeim:historyim:readim:writelinks:readlinks:writempim:historympim:readmpim:writepins:readpins:writereactions:readreactions:writereminders:readreminders:writeremote_files:readremote_files:sharestars:readstars:writeteam:readusergroups:readusergroups:writeusers:readusers:read.emailusers:writechat:write:botchat:write:usercommandsfiles:write:userusers.profile:writeusers.profile:readsearch:read

About Slack

Slack is a channel-based messaging platform. With Slack, people can work together more effectively, connect all their software tools and services, and find the information they need to do their best work — all within a secure, enterprise-grade environment.

Action

Description:Create a file attachment on a card by referencing a public URL
Version:0.1.1
Key:trello-add-file-as-attachment-via-url

Action Code

// legacy_hash_id: a_elirYr
import { axios } from "@pipedream/platform";

export default {
  key: "trello-add-file-as-attachment-via-url",
  name: "Add Attachment to Card via URL",
  description: "Create a file attachment on a card by referencing a public URL",
  version: "0.1.1",
  type: "action",
  props: {
    trello: {
      type: "app",
      app: "trello",
    },
    name: {
      type: "string",
      label: "Name",
      description: "The name of the attachment. Max length 256.",
      optional: true,
    },
    mimeType: {
      type: "string",
      label: "MIME Type",
      description: "The mimeType of the attachment. Max length 256.",
      optional: true,
    },
    url: {
      type: "string",
      label: "File URL",
      description: "A URL to a file you'd like to attach. Must start with http:// or https://",
    },
    id: {
      type: "string",
      label: "ID",
      description: "The ID of your Trello card",
    },
  },
  async run({ $ }) {
    const oauthSignerUri = this.trello.$auth.oauth_signer_uri;

    const trelloParams = [
      "name",
      "mimeType",
      "url",
    ];
    let p = this;

    const queryString = trelloParams.filter((param) => p[param]).map((param) => `${param}=${encodeURIComponent(p[param])}`)
      .join("&");

    const config = {
      url: `https://api.trello.com/1/cards/${this.id}/attachments?${queryString}`,
      method: "POST",
      headers: {
        "Content-Type": "application/json",
      },
    };

    const token = {
      key: this.trello.$auth.oauth_access_token,
      secret: this.trello.$auth.oauth_refresh_token,
    };

    const signConfig = {
      token,
      oauthSignerUri,
    };

    const resp = await axios($, config, signConfig);
    return resp;
  },
};

Action Configuration

This component may be configured based on the props defined in the component code. Pipedream automatically prompts for input values in the UI.

LabelPropTypeDescription
TrellotrelloappThis component uses the Trello app.
Namenamestring

The name of the attachment. Max length 256.

MIME TypemimeTypestring

The mimeType of the attachment. Max length 256.

File URLurlstring

A URL to a file you'd like to attach. Must start with http:// or https://

IDidstring

The ID of your Trello card

Action Authentication

Trello uses OAuth authentication. When you connect your Trello account, Pipedream will open a popup window where you can sign into Trello and grant Pipedream permission to connect to your account. Pipedream securely stores and automatically refreshes the OAuth tokens so you can easily authenticate any Trello API.

Pipedream requests the following authorization scopes when you connect your account:

readwrite

About Trello

Trello keeps track of everything, from the big picture to the minute details

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